Electrification Performance Specification EPS Traction Power Supply System Final Version 7

Transcription

1 Metrolinx Electrification Project Metrolinx Contract No. RQQ-2011-PP-032 Metrolinx Project No Electrification Performance Specification Final Version 7 Document Reference No October 28, 2014 Submitted to: Metrolinx Submitted by:

2 Revision History Date Version Purpose March 23, X First issue as stand-alone document. June 15, Update based on Metrolinx Submittal Review Oct 3, Update based on Metrolinx Submittal Review Nov 13, Update based on Metrolinx Submittal Review Dec 16, Update based on Metrolinx Submittal Review April 4, Update based on Metrolinx Submittal Review October 28, Update to restore changes based on technical feedback Parsons Brinckerhoff Halsall Inc Yonge Street, 20 th Floor Toronto, Ontario M4P 1E4 Canada Page 1

3 TABLE OF CONTENTS 1. Purpose Scope Reference Documents Responsibilities General Requirements General Product Selection Uniformity Accessibility and Equipment Arrangement Aesthetic Treatment Spares Other Requirements General Presentation of the Traction Power Supply system Traction Power Facility Location Spacing of TPF Sites Real Estate Requirements Approximate TPF Footprint Location Requirements Access / Egress Security Parking Spaces Drainage Feeding and Sectionalizing Feeding Sectionalizing Feeding and Sectionalizing Diagram Interfaces & Coordination with Hydro One HV Utility Interconnections Impact on the HV Utility Grid Harmonic Distortion Limits Page 2

4 9.4 Voltage Unbalance Power factor Voltage Clearance Metering Feeding of Regenerated Energy Back into Hydro One Grid Network Assumptions for the Sizing Environmental/Climatic Conditions Electrical Data Verification of Configuration Traction Power Supply Architecture Components Traction Power Substation (TPS) Switching Station Paralleling Station Wayside Power Control Cubicle Traction Power Supply for the Rolling Stock Maintenance Yard Description of 230 kv and 25 kv Equipment kv Equipment in the Traction Power Substation x25 kv Equipment in the Traction Power Substation x25 kv Equipment in the Switching Stations and Paralleling Stations x25 kv Equipment in the Low Voltage Distribution Architecture Auxiliary and Control Power Emergency Power TES SCADA and Protection system TPSS SCADA Electrical Protection System Grounding, Return Current, and Lightning Protection Power and Control Cables Description General Page 3

5 kv Cables Low Voltage Cables Segregation Installation Guidelines Testing Factory and Installation Tests Project Site Installation Verification and Acceptance Tests Special Tests Operational and Maintenance Requirements Operational Requirements Maintenance Requirements Performance Requirements System Voltage System Frequency Regenerative Braking Interface Requirements Utilities HV Power Utility Communications Signalling System Rolling Stock Civil and Architectural Works Reliability, Availability, and Maintainability Requirements Safety Requirements Safety Design Equipment / Enclosure Safety Signage Protection Barrier Fire and Life Safety Environmental Requirements Appendix A: Schematics Page 4

6 Appendix B: Brief Technical Specifications of Major Equipment Appendix C: Standards Appendix D: Definitions Appendix E: Abbreviations and Acronyms Page 5

7 LIST OF TABLES Table 1: Project Reference Documents Table 2: Major Electrical Data Table 3: Rated Impulse Voltage and the Short-Duration Power-Frequency (ac) Test Level Voltage Table 4: Routine and Design Tests of Traction Power Transformers Table 5: Routine and Design Tests of Autotransformers Table 6: Train-Operation Plan for the Reference Case ( ) LIST OF FIGURES Figure 1: 2x25 kv Typical Section of Autotransformer Feed Configuration Figure 2: Typical Layout of Traction Power Substation Figure 3: Typical Layout of Switching Station Figure 4: Typical Layout of Paralleling Station Figure 5: Typical 230 kv Receiving Gantry Figure 6: Typical Alternative TPF Locations with respect to Tracks Page 6

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9 1. PURPOSE Metrolinx intends to implement traction power electrification within Lakeshore and Kitchener corridors of GO Transit routes serving metropolitan Toronto. Studies have determined that this shall consist of a 2x25 kv ac system with a 1x25 kv spur delivering power to trains by means of an overhead contact system (OCS), and collected by roofmounted pantograph current collectors on each train s locomotive or electric multiple unit (EMU) rail vehicles. The electrification performance specifications, 13 in all, have the purpose of establishing the basis for electrification design such that an efficient, safe, and cost-effective installation shall result. The purpose of is to provide a broad specification describing the traction power supply system and associated site works for Metrolinx Electrification including its performance, operational, safety, reliability, availability, and maintainability (RAM), and interface requirements. Page 8

10 2. SCOPE This Electrification Performance Specification (EPS) shall develop the specifications for the 2x25 kv ac autotransformer feed type (TPSS) including: 1. Its configuration and major components; 2. System architecture; 3. Operational, performance, safety, RAM, and environmental requirements; 4. Interfaces and coordination with the high-voltage network of Hydro One, and with associated different Metrolinx subsystems such as rolling stock, Overhead Contact System (OCS), train control system, communications, operations and maintenance requirements, track work, and civil infrastructure; 5. Site requirements; and 6. Control and protection system. Page 9

11 3. REFERENCE DOCUMENTS Metrolinx documents that contribute directly to the subject of Traction Power Supply System (TPSS) requirements are listed in Table 1: Project Reference Documents. Established standards for electrified railways and related topics relevant to the TPSS are listed in Appendix C: Standards, at the end of this document. Other materials supporting the understanding of this document are provided in Appendix D: Definitions and Appendix E: Abbreviations and Acronyms. Table 1: Project Reference Documents Document Title Issuer Date of Issue Request to Qualify and Quote for Engineering Services Mx October 4, 2011 GO Electrification Study Final Report including Appendices Delcan Arup JV/Mx Dec 2010 Hydro One Connection Agreement Hydro One Not available yet System Configuration Options Draft1 PB Jan 5, 2012 Traction Power Load Flow Analysis Report for Kitchener (including the UP Express) and Lakeshore West and East lines LTK Jan 4, 2013 EPS Traction Power Distribution System V5 PB Dec 10, 2013 EPS Grounding and Bonding V5 PB Dec 16, 2013 EPS Rail System Requirement SCADA System V5 PB Dec 10, 2013 GO Transit Design Requirements Manual (Latest Version) GO Transit Page 10

12 4. RESPONSIBILITIES The traction power supply system is under the responsibility of the Traction Power Manager. Also, it is the responsibility of all users of this document: To develop detailed specifications and designs based upon the principles outlined in this document. To support all design work by calculations that shall be made available to Metrolinx Electrification department upon request. To inform Metrolinx Electrification Department in the event of any conflict between the contents of this document and any other document produced for the project. Page 11

13 5. GENERAL REQUIREMENTS 5.1 General The traction power supply system design shall conform to all applicable standards and codes (refer to Appendix B) and shall meet operational, performance, interface, RAM, safety, and environmental requirements (refer to clauses 19 to 24 of this ). Some additional requirements are presented in the following clauses. 5.2 Product Selection All prescribed equipment, materials, cables, and appurtenances shall be either certified by recognized certification organizations accredited by Standards Council of Canada, or compliant with relevant Canadian Standards Association (CSA) Standards, Ontario Electrical Safety Code (OESC), Electrical Equipment Manufacturers Association of Canada (EEMAC) Standards, Canadian Electrical Manufacturers Association (CEMA) Standards, American National Standards Institute (ANSI), Institute of Electrical and Electronic Engineers (IEEE), European Standards (EN), or local standards. All prescribed equipment, materials, cables and appurtenances shall not only be designed and constructed to operate within the intended application and operating environment, but also have a proven track record of successful operation. All equipment, materials, cables and appurtenances shall be produced by manufacturers that are regularly engaged in the production of such products (i.e., at least five consecutive years). All prescribed equipment, materials, cables, and appurtenances shall adhere to the applicable recommended practices of the CEMA, EEMAC, American Railway Engineering and Maintenance-of-Way Association (AREMA) where applicable. Page 12

14 5.3 Uniformity Equipment enclosures, assemblies, sub-assemblies, and/or components that have the same operational, functional and/or performance characteristics shall be designed so that all components are positioned in the same location. Internal wiring shall also be routed between components in a like manner. Where identical installations exist, unless site conditions prevent it the following requirements shall be adhered to: 1. For equipment used for identical applications uniformity of design and installation shall be maintained for ease of maintenance 2. Equipment enclosures shall be mounted and installed in a like manner. 3. Penetrations for conduit, grounding, and access panels shall be located in the same place. 4. The location of equipment relative to adjacent equipment shall not differ. 5. The routing of conduit, cable tray, and cables between equipment enclosures shall not differ. 6. Termination hardware shall be located in like manner. 7. Cables and wire terminations shall be located in like manner. 8. Gantries shall be located in like manner 5.4 Accessibility and Equipment Arrangement Working clearances on all sides of equipment shall be provided per the equipment manufacturer s recommendations, power utility requirements, OESC, CEC, NESC, CAN/ULC-801, and any other applicable codes. Horizontal and vertical clearance for equipment removal, replacement, and/or maintenance shall also be provided without impacting other energized equipment. Clearance for door openings / hatches shall be provided as well. Each walk-in prefabricated waterproof enclosure for 25-kV indoor switchgear shall comply with the requirements of NEMA 3R and shall be a sheltered-aisle construction for outdoor use. The doors and hinged access openings to the switchgear cable Page 13

15 compartment shall be fully gasketed and weatherproof. Switchgear shall be arc-flash resistant and the enclosures shall be tamperproof. The enclosures shall have appropriate space to accommodate the electrical equipment, raceways/cable trays, cabling penetrations fireproof and rodent proof, and ancillary components and also to meet legislative requirements and best maintenance practice. There shall also be adequate space and doors for personnel and the easy removal and replacement of any equipment item. All switchgear enclosures shall have front and rear access doors, and/or removable panels. 5.5 Aesthetic Treatment TPF and their sites shall be designed to minimize the adverse visual impact on the areas in which they are located, and to comply with the appropriate federal/state/local architectural and environmental guidelines. 5.6 Spares All control, signal, and communication installations shall include spare conductors and/or fibre strands to provide for service level maintenance/repairs requirements. The minimum spares shall be ten percent. All panel-boards and termination cabinets shall include at least fifty percent spare capacity for future growth. All ductbank systems shall include at least one spare conduit or fifty percent spare conduits, whichever is greater. All spares shall be capped with a pull line / rope secured inside. Cable tray system shall be sized to include twenty percent spare capacity. The minimum level of spares for all major equipment and general consumables shall be prescribed in consultation with Metrolinx. Spare provisions associated with the incoming HV power services shall be coordinated with the power supply utility and approved by Metrolinx. Page 14

16 5.7 Other Requirements The design of the TPSS and associated site works shall be coordinated with: 1. The requirements of the power supply utility company or companies that provide electrical power to the system. Refer to Clause 9 for details. 2. The requirements of the provincial and local jurisdictions in which the traction power facilities (TPF) are located. 3. The technical and operational parameters and requirements of the Metrolinx Electrification system (e.g., track work, overhead contact system, rolling stock, operations, maintenance, train control system, communications system, electromagnetic compatibility, etc.). Page 15

17 6. GENERAL PRESENTATION OF THE TRACTION POWER SUPPLY SYSTEM The traction power supply system (TPSS) shall have a 2x25 kv autotransformer feed type configuration. The TPSS configuration shall utilize: 1. Traction power substations (TPS) with main (power) transformers, 2. Switching stations (SWS) with autotransformers, and 3. Paralleling stations (PS) with autotransformers. The TPS, SWS, and PS all provide 25 kv nominal voltage with respect to remote ground, both to the catenary and to the along-track negative feeders (NF). These voltages are 180 degrees out-of-phase with each other and therefore the catenary is at 50 kv with respect to the NF. Accordingly, although the rolling stock sees the system voltage as 25 kv, the system functions as a 50 kv ac system with the advantage of longer spacing of substations. Traction power shall be supplied to the trains from wayside traction power facilities (TPF) through the catenary, which distributes power to the train pantographs. The pantographs, mounted on the roof of the rolling stock, collect the traction power from the catenary through mechanical contact by running (sliding) under the contact wire. The electrical circuit is completed back to the source TPS via multiple return paths, including running rails, static wires, ground, and the NF. The running rails are insulated from ground because of track circuit requirements. Impedance bonds are provided at insulated rail joints to facilitate passage of traction return current. The running rails are connected to ground and aerial ground wires at TPF locations and at appropriate intermediate locations through impedance/drain bonds for permitting flow of traction return current to the TPF and also for maintaining rail potential within safe limits. Refer to EPS Grounding and Bonding for further details of traction return and grounding system. The TPS transform two phases of the high-voltage (HV) (230 kv as applicable), 3-phase utility power to the 2x25 kv single-phase power of the autotransformer feed system. The TPS supply power for the trains, which is distributed along the tracks by the OCS. Page 16

18 There shall be one NF per main track, attached to the catenary structures with brackets and insulators. There shall be only two NF for sections having more than two main line tracks. The catenary shall consist of a messenger wire and a contact wire. The contact wire shall be suspended from the messenger wire by the means of hangers, and tied electrically to the messenger wire by means of jumper wires. Refer to Section EPS-02000: Traction Power Distribution System for further details of the OCS. Autotransformers shall be provided periodically along the line, at PS and SWS locations to interconnect catenary, NF, and rails. The autotransformer turns ratio shall be 2:1 of primary (catenary-to-nf) to secondary (catenary-to-rails) windings, in order to step down the 50 kv distribution voltage between catenary and NF to 25 kv nominal between catenary and rails. Page 17

19 7. TRACTION POWER FACILITY LOCATION TPS locations have been determined for the Kitchener, Lakeshore, and UP Express corridors of the Metrolinx rail network. Due consideration was given to the results of the load flow simulation analysis, the proximity to high-voltage transmission facilities, the feasibility of drawing the required HV power, and availability of real estate. Metrolinx has agreed in principle with Hydro One that Hydro One shall design, implement, and operate the TPS though the property shall continue to be owned by Metrolinx. Metrolinx will control all 25kV equipment and the main transformers in the TPS. The modalities of control of 230kV equipment located in the TPS will be worked between Metrolinx and Hydro One. The performance specifications of typical TPSS are presented in the following clauses in anticipation of the design to be provided by Hydro One. Layout of a typical TPS is presented in Appendix A. 7.1 Spacing of TPF Sites TPS sites shall be located, in general, at approximately 40-kilometre (25-mile) intervals along the Metrolinx right-of-way taking into consideration the availability and feasibility of HV interconnection points and the train operation plan. SWS sites shall be located approximately midway between adjacent TPS sites. PS sites shall be located, in general, at approximately eight-kilometre (five-mile) intervals, between switching station and substation sites. The phase-break locations of TPS and SWS should preferably be located on tangent level track with sufficient distance from stop signals to prevent stalling of trains at phase-break locations. 7.2 Real Estate Requirements Approximate TPF Footprint The following requirements shall be considered in determining the size of the TPF sites. A given site shall accommodate: Page 18

20 1. All of the equipment necessary for the level of service, associated roadway, and ROW requirements. 2. Design requirements imposed by utility company and/or the local jurisdictional entities. 3. Space provisions for future equipment (normally 20 percent). 4. Space requirements for the placement and removal of equipment. Where practical, the footprints of different TPF (considering the above requirements) shall be as follows: 1. TPS (2 power transformers, each of 30-MVA capacity) with two high voltage utility supply circuits: 65 metres X 50 metres (200 feet X 160 feet). 2. SWS with 2, 10-MVA, 2x25-kV autotransformers: 50 metres X 30 metres (160 feet X 90 feet). 3. PS with 1, 10-MVA, 2x25-kV autotransformers: 40 metres X 30 metres (120 feet X 80 feet). These are typical footprints of different TPF. Orientation of the TPF with respect to tracks, locations of utility supply circuits, equipment, and road access shall be determined on a site-by-site basis. Additional space may be required at TPF sites for vehicle parking, access roads, setbacks, landscaping, and construction. Additional space to the extent of 20% may be kept for future expansion/growth of the network. For TPF sites, the TPSS detailed design, including interconnections to the OCS and power utility network, shall be carried out within the limits of the land plots and easements earmarked for this purpose. 7.3 Location Requirements If the TPF is located beneath or in the proximity of Metrolinx train tracks located on aerial trackways it shall be ensured that that the main power transformers and autotransformers, as well as their outdoor switchgear, are located in an open area (i.e. not underneath structures) and that proper clearances are available for the main gantry. Page 19

21 Access shall be provided between the TPF and the Metrolinx train track. If this cannot be provided, an alternate method of providing vehicular access to the trackside shall be provided. There shall be a strain gantry located within the railroad right-of-way (ROW) parallel to and on the opposite side of the track from the TPF, with footprints exactly equal to that of the main gantry. The cross feeders are supported at both ends by the main gantry and the strain gantry respectively. Generally, no disconnect switch is mounted on the strain gantry. If the TPF is located adjacent to the railroad ROW, the preferred option, the main (catenary feeding) gantry shall be located within the TPF fence. If the TPF is located away from the track, the main gantry shall also be located within the railroad ROW, parallel to and toward the TPF side of the track. In this case, duct banks and manholes for laying power cables from the TPF to the main gantry shall be located on the strip of land provided for this purpose. These two alternative arrangements are schematically depicted in Appendix A. Where track alignment is on viaducts, the TPF shall be located on the ground, and power cables shall be routed from the TPF to the gantries located on the viaducts. Routing shall be through duct banks and manholes, and then onto the vertical columns of the viaducts. Where track alignment is in trenches, the TPF shall be located on the ground, and power cables shall be routed from the TPF to the motorized disconnect switch (MOD) assemblies located adjacent to the trench alignment. Routing shall be through duct banks and manholes, and then onto the OCS. If the TPF is located adjacent to the trench alignment, MODs shall be located within the TPF fence. Phase-breaks shall not be located in tunnels. 7.4 Access / Egress Access to each TPF site shall be required both during construction and for operation and maintenance purposes. Roads for access to the TPF shall be designed in accordance with the ordinances of the local jurisdiction in which the TPF are located. Access roads and gates at TPF shall be sized to permit placement and removal of all TPF equipment, as well as access by first responders including fire department vehicles. Page 20

22 The design of the access roadways and equipment arrangement within the TPF shall ensure that equipment owned by or maintained by the local power utility company is located within acceptable distance from the access roadway, as specified by the relevant power supply utility. 7.5 Security The design of the TPF sites shall include a barrier (e.g., fence, CMU block wall). The height of the barrier above finished grade shall be 2 metres (6-6 ) along the complete perimeter, to prevent unauthorized access. The design of the access gates shall include a means to secure the gates and prevent unauthorized access. All equipment enclosures shall have a Metrolinx approved locking device. The doorways at the prefabricated equipment enclosures shall include Metrolinx approved intrusion detection hardware, which shall be remotely monitored. 7.6 Parking Spaces The number and sizes of parking spaces for O&M personnel to be incorporated into the design of each TPF site shall conform to Metrolinx existing specifications / standards /guidelines / instructions. 7.7 Drainage This shall conform to Metrolinx existing standards / guidelines / instructions including GO Transit Design Requirement Manual. Page 21

23 8. FEEDING AND SECTIONALIZING 8.1 Feeding At each TPS, HV power shall be drawn from the power utility network at 230 kv. Two incoming circuits shall be required, each originating from different utility substations wherever possible, or at least from different bus systems. These may be carried on the same transmission towers. Two equally sized HV traction power transformers shall be provided at each TPS, each transformer supplied from a separate incoming circuit. Both transformers shall be energized under normal TES configuration, with one of them supplying power to the feed section west/north of the TPS, and the other supplying power to the feed section to the east/south. The two feed sections shall be separated by a phasebreak at the TPS. Both HV power transformers shall be individually capable of supplying the full normal load of the TPS. Note: Metrolinx has decided that Hydro One shall be designing and implementing the traction substations. Therefore, the design details of the substations are awaited from Hydro One. 8.2 Sectionalizing Main Tracks In order to limit the extent of an outage zone due to faults or maintenance, the catenary shall be sectionalized both between the tracks and longitudinally on the same track along the route. Longitudinal sectionalizing of the catenary shall be provided at the TPS, SWS, PS, and at all track interlocking s and track turnouts. The sectionalizing at the TPS and SWS shall be of the phase break type; elsewhere, it shall be a regular sectioning gap (insulated overlap or air gap type on the main tracks, with section insulators permitted on crossover and turnout tracks). At TPF, the sectionalizing gaps shall be provided with normally open (N.O.) no-load type motorized disconnect switches that can be closed during contingency operations if the catenary on both sides of the sectionalizing gap needs to be electrically continuous. Page 22

24 At track interlockings, the longitudinal sectionalizing gaps shall be provided with normally closed (N.C.) load break motorized disconnect switches. These can be opened during contingency operations to isolate a smaller segment of one track, either between adjacent interlockings (contained within an electrical section) or within an interlocking and the adjacent TPS, SWS or PS (contained within an electrical section). In either case, this shall permit single-track operations on the other track. At back-to-back crossovers, the sectionalizing arrangement shall be such that the catenary of any track on either side of the interlocking can be isolated selectively. Concerning the negative phase, two parallel along-track NF shall be provided along the route (one per main track) regardless of the number of parallel tracks at a given location. Longitudinally, the NF system shall be sectionalized at the TPS, SWS and PS. Power Supply to Sidings and Extra Terminal Tracks As a rule, the power supply to short segments of track sidings that are not used for regular train service along the main line shall be derived from the adjacent main track via a N.C. no-load type motorized disconnect switch across the sectionalizing gap at the turnout. If the siding has turnouts from the main track at both ends, sectionalizing gaps and switches shall be provided at both ends, with one of the disconnect switches being N.O. and the other N.C. type. This feeding arrangement shall be used regardless of whether the track siding is close to a TPF or not. At terminals with more than two tracks, traction power for the additional tracks shall be derived from the main tracks in similar fashion (i.e., using N.C. motorized disconnect switches across sectionalizing gaps at the turnouts). Both sidings and extra terminal tracks shall be radially fed from the adjoining main track through a single connection point. 8.3 Feeding and Sectionalizing Diagram The feeding and sectionalizing diagram also referred to as key one line diagram will give the basis of the concept of the electrical traction feeding and sectionalizing. The diagram will present a global view of the electrified tracks displaying the configuration of the traction power supply system, that is, locations of the traction power facilities (traction substations, switching stations and paralleling stations) and the electrical equipment installed therein such as transformers/autotransformers, circuit Page 23

25 breakers, buses, and other electrical equipment installed on line such as disconnect switches and phase breaks. Page 24

26 9. INTERFACES & COORDINATION WITH HYDRO ONE 9.1 HV Utility Interconnections An agreement shall be developed with Hydro One regarding the feeding arrangements on the high voltage side and the design, operation, and maintenance of the substation facilities (see note, clause 8.1). A typical view of HV equipment at a TPS is presented in Appendix A. 9.2 Impact on the HV Utility Grid The load imposed by the railway s traction power substations on the electric utility s 3- phase 230-kV system shall be single-phase, nonlinear, and rapidly variable over time. Since each HV transformer shall draw power from only two phases of a three-phase system, this shall inevitably cause current and voltage imbalances in the HV supply grid. As a rule, the railway load is characterized by three factors: 1. Phase imbalance caused by the single-phase nature of the load. Of the current and voltage imbalances, the voltage imbalance is of greater concern, as it affects the power quality of other utility customers. 2. Voltage flicker, caused by the highly variable nature of the load. 3. Harmonic distortion, produced by the power convertors on the trains. In order to mitigate the effects of the unbalanced loading, the single-phase connections of the HV transformers shall be alternated from one pair of phases feeding one transformer to a different pair of phases feeding the other transformer at the same TPS. The phase connections shall also be changed between substations. This shall partially balance the load between the three phases regionally. The TPSS design shall address power quality issues arising from operation of the Metrolinx electric trains, including voltage imbalance, voltage flicker, and harmonic distortion caused by the railway load on the HV supply system. Page 25

27 9.3 Harmonic Distortion Limits The traction power supply system per se, generally, does not produce harmonics. Harmonics are mainly generated by the traction unit of the rolling stock and because of occasional momentary loss of contact between the OCS and the pantograph of the moving train. The harmonic distortion limits for individual and total harmonic distortion of voltage and current shall be followed per Tables 11-1, 10-3 and 10-4 of IEEE Std. 519, IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems, unless the limits imposed by the concerned power supply utility are more strict. If harmonic distortion exceeds the permissible limits, suitable harmonic filters shall be provided on the 25 kv side of the bus at TPS. 9.4 Voltage Unbalance The TPSS installations shall conform to the voltage unbalance criteria specified in the relevant codes and standards. 9.5 Power factor The TPSS design shall conform to the power factor requirements of the HV power utility. If needed, power factor correction equipment may be installed at TPS on the 25 kv side. Modern rolling stock, however, has almost unity power factor, and power factor correction may not be required. 9.6 Voltage Clearance The TPSS design shall conform to the requirements of standards and codes including Canadian Standard CSA C22.3 No. 1 in maintaining physical separation clearances around high and low voltage components. Page 26

28 9.7 Metering Metering equipment shall be provided at all TPS as per the requirements of Hydro One. 9.8 Feeding of Regenerated Energy Back into Hydro One Grid Network The Metrolinx trains shall use regenerative braking. Some of the regenerated energy shall be used by other trains within the feed zone of the same main transformer of the TPS as the braking train, or to meet the auxiliary power requirements of regenerativebraking train. The unused net regenerated energy shall have to be either dissipated in the rheostatic braking resistors of the train or in the automatic assured receptivity units of the TPS, or alternatively fed back into the HV network of Hydro One (See clause 20.3). Metrolinx shall discuss with Hydro One the logistics of feeding regenerated energy back into the Hydro One grid. The quality of regenerated energy shall conform to Hydro One specifications. Page 27

29 10. ASSUMPTIONS FOR THE SIZING 10.1 Environmental/Climatic Conditions The environmental/climatic data pertaining to the Metrolinx Electrification is given hereunder: Environmental Requirements: Extremes 1. Temperature Range: ºC to ºC 2. Maximum rainfall in 24 hours: 98.6 mm 3. Maximum snowfall in 24 hours: 48.3 cm 4. Humidex: Elevation: 77 m 10.2 Electrical Data The sizing of TPF has been based on the recommendations of the Electrification Study Report submitted by the DELCAN Arup JV and subsequent traction power load flow study done by LTK (refer to clause 3). These studies were done to ensure that the TPSS can support the train operations plan described in clause 19 both under normal operating conditions and under single contingency conditions as described therein. Ratings and configuration for each type of TPF shall be standardized to the extent practical. In general, each TPS shall have two 30-MVA power transformers, each SWS shall have two 10 MVA autotransformers and each PS shall have one 10-MVA autotransformer. Major electrical data is presented in Table 2 below: Page 28

30 Parameters Table 2: Major Electrical Data 230 kv equipment (at incoming HV system voltage) Rated frequency 60 Hz 60 Hz Rated Voltage 230 kv 25 kv Hydro One incoming XX N/A current Lowest non-permanent XX 17.5 kv voltage Lowest permanent voltage XX 19 kv Nominal Voltage 230 kv 25 kv Highest permanent Voltage XX 27.5 kv Maximum current flowing into each Hydro One incoming feeders XX 25 kv equipment (at overhead contact system voltage) N/A Note: xx denotes information to be obtained from Hydro One. Hydro One may also confirm other HV data Verification of Configuration The configuration of the TPSS, including locations of TPF; the ratings of major equipment, such as transformers and autotransformers; and ampacities of OCS conductors shall be confirmed by a computer based traction power load flow study. Page 29

31 11. TRACTION POWER SUPPLY ARCHITECTURE 11.1 Components The traction power supply system (TPSS) is comprised of traction substations (TPS), switching stations (SWS), and paralleling stations (PS). These are described in brief in clause 6 and clause 7, above. Schematic sketches of TPSS components showing one TPS, SWS, and PS each are presented in Appendix A. Sometimes SWS and PS are considered a part of the traction power distribution system (TPDS). This Performance Specification contains TPS architecture and general location requirements of all TPF. The architecture of SWS and PS is presented in the allied Section EPS-02000: Traction Power Distribution System. The TPSS also contains wayside power control cubicles (WPC). WPC is an enclosure for power supply equipment for the operation of motorized disconnect switches and the associated Supervisory Control and Data Acquisition (SCADA) equipment located at the wayside. The TPSS architecture is described in the following clauses Traction Power Substation (TPS) A TPS is an electrical installation in which power is received at high voltage and transformed to the voltage and characteristics required at the OCS for the nominal 2x25 kv system, containing equipment such as transformers, circuit breakers and sectionalizing switches. It also includes the incoming high voltage lines from the power supply utility. The typical layout of a TPS is presented in Appendix A. Page 30

32 HV Connection Scheme At each TPS, two separate 3-phase HV circuits shall be drawn from the power utility network. These circuits should be originating from different utility substations wherever possible, or at least from different bus systems. These may be carried on the same transmission towers. Two equally sized HV traction power transformers shall be provided at each TPS, each transformer supplied from a separate incoming circuit. Both transformers shall be energized under normal TES configuration, with one of them supplying power to the feed section west/north of the TPS, and the other supplying power to the feed section to the east/south. The two feed sections shall be separated by a phasebreak at the TPS. Both HV power transformers shall be individually capable of supplying the full normal load of the TPS. The HV transformers shall be single-phase, with their primary windings connected to two phases of the utility s 230-kV, 3-phase system. The secondary winding of the HV transformer shall be either: 1. A single winding with a grounded midpoint connected also to the running rails, or 2. Two separate counter-phase secondary windings connected in series, with the common point grounded and connected to the running rails. Configuration and Operational Flexibility The TPS re-configuration capabilities shall be such that a single transformer shall be able to supply power to the feed sections both west/north and east/south of the TPS in an event such as: 1. Power loss to one of the incoming 230 kv feeder lines, 2. Temporary outage of one of the transformers or transformer-related equipment, or 3. Outage of a 25 kv bus section. The positive bus of the TPS the bus supplying power to the catenary shall be split into two sections interconnected via a normally open (N.O.) motorized tie circuit breaker, with each bus section supplied by a different transformer under normal conditions. In the normal TES configuration for two main tracks, each section of the positive bus shall feed Page 31

33 two different catenary electrical sections. (Similar requirements apply to four main track sections). The negative bus of the TPS the bus supplying power to the along-track NF shall be sectionalized likewise. Tie-breakers of both the catenary and the NF buses shall be interlocked with each other so that they open and close together; these shall, in effect, be two-pole breakers. To prevent inadvertent bridging of two incoming supplies, the tiebreakers shall also be interlocked with their associated disconnect switches and the main transformer circuit breakers. The outer terminals of the secondary winding of each HV transformer shall be connected to the positive and negative buses (the bus sections corresponding to the particular transformer) through a two-pole circuit breaker. The positive and negative buses in turn shall be connected to the catenary and NF, respectively, through single-pole circuit breakers and in-series connected no-load motorized disconnect switches. Jumper type motorized, N.O., load-break disconnect switches shall also be provided, connected between each pair of in-phase, same-side, single-pole circuits to allow for one 25 kv circuit to feed both track sections under emergency conditions of feed extension because of complete failure of any TPS. Furthermore, N.O. trackside motorized loadbreak switches shall be installed at the substation s phase break, to provide in emergency conditions for electrical continuity between the catenary and NF, respectively, on either side of the phase break. The flexibility and re-configuration capability of the single line diagram of the TPS on the 50/25 kv side shall be such that a loss of one single-pole circuit breaker, or disconnect switch, or interconnecting cable still allows the TPS to feed the whole feed zone of the TPS without having to de-energize one of the HV transformers Switching Station In Switching Stations (SWS), the supplies from two adjacent TPS are electrically separated; also electrical energy can be supplied to an adjacent but normally separated electrical section during contingency power supply conditions. An SWS also acts as a paralleling station (PS). The typical layout of SWS is presented in Appendix A. Page 32

34 Details about SWS architecture are presented in the allied Section EPS-02000: Traction Power Distribution System Paralleling Station This is an installation that helps boost the OCS voltage and reduce the running rail return current by means of the autotransformer feed configuration. The negative feeders (NF) and the catenary conductors are connected to the two outer terminals of the autotransformer winding at this location with the central terminal connected to the rail return system. OCS sections can be connected in parallel at PS locations. The typical layout of PS is presented in Appendix A. Details about PS architecture are presented in the allied Section EPS-02000: Traction Power Distribution System Wayside Power Control Cubicle In addition to the above TPF, wayside power control cubicles (WPC) shall be located at railway stations, including the universal crossovers at both ends, and on the wayside at universal crossovers, at rolling stock maintenance facilities, and at wayside infrastructure maintenance facilities. WPC is an enclosure for power supply equipment for the operation of motorized disconnect switches and the associated SCADA equipment located at the wayside. Every WPC shall have, in general, a footprint of 3 metres X 2.5 metres (10 feet X 8 feet). The number of WPC at each site shall depend upon the site conditions, the layout of track including crossovers and MODs, the location of the auxiliary power source, and the routing of cables. The requirement and locations of WPC shall be suitably optimized in consultation with the OCS, Signalling, and Communications Systems. Page 33

35 The design of each WPC shall include: 1. All equipment provided therein; 2. Grounding system; 3. SCADA interface with the Communications system; and 4. Auxiliary power and SCADA interface with the OCS system at the operating panel of the MOD Traction Power Supply for the Rolling Stock Maintenance Yard The traction power supply for the rolling stock maintenance yard shall be supplied from a separate circuit breaker on the TPF located nearest to the rolling stock maintenance yard. It shall be a 1x25 kv system with independent protection and sectionalizing arrangements. Page 34

36 12. DESCRIPTION OF 230 kv AND 25 kv EQUIPMENT kv Equipment in the Traction Power Substation Each traction power substation shall, in general, have the following 230 kv equipment: 1. Two 230 kv circuits from the power supply utility grid, preferably from different substations, at least from different buses of the same substation. The circuits could be overhead or underground conductors depending upon the design by the power utility kv utility disconnect switch; kv circuit breakers; 4. Lightning Arresters 5. Grounding and bonding 6. Protective relaying kv side metering equipment including current and voltage transformers, meters, and other equipment as required; and 8. Single phase power transformer with 230 KV primary winding and 2x25 kv secondary winding. Hydro One shall be designing and constructing or implementing the traction substations. Therefore the performance specifications shall depend upon Hydro One s design. Typical brief specifications of (a) HV switchgear and (b) power transformers are presented in Appendix B x25 kv Equipment in the Traction Power Substation Each traction power substation shall have the following 2x25 kv equipment: kv equipment enclosures kv double-pole switchgear Page 35

37 3. 25 kv single-pole switchgear kv double-pole isolator kv single-pole isolator kv cables kv raceways, cable troughs and trays 8. Lightning arresters 9. Protection relays 10. Grounding and bonding system Typical brief specifications for equipment items are presented in Appendix B x25 kv Equipment in the Switching Stations and Paralleling Stations The SWS and PS shall have the following 2x25 kv equipment: 1. Autotransformers two for each SWS and one for each PS kv equipment enclosures kv double-pole switchgear kv single-pole switchgear kv double-pole isolator kv single-pole isolator kv cables kv raceways, cable troughs and trays 9. Lightning arresters 10. Protection relays 11. Grounding and bonding system Typical brief specifications for equipment items are presented in Appendix B. Page 36

38 12.4 1x25 kv Equipment in the The traction power supply system shall have the following 1x25 kv equipment: kv/600v auxiliary transformers 2. Associated switchgear 3. Protective relaying 4. Lightning arresters Page 37

39 13. LOW VOLTAGE DISTRIBUTION ARCHITECTURE 13.1 Auxiliary and Control Power Auxiliary power at prefabricated equipment enclosures (for lighting, receptacles, and the like) can be derived from: 1. Two local power utility services; or 2. Locally by tapping of each 25 kv bus and transforming to the utilization voltage through auxiliary transformers ; or 3. One local power utility service and one tapping of the 25 kv bus (which is transformed to the utilization voltage). The arrangement at each site shall be site-specific, reliable, and economical. The primary auxiliary power source shall be switched to the secondary auxiliary power via an automatic transfer switch. The auxiliary transformer shall be sized based upon the demand electrical load. Auxiliary transformers may be indoor or outdoor type, with suitable enclosures according to their location. Control power at traction power facilities shall be 125 V dc and originate from a battery and battery charger Emergency Power Emergency Electrical Loads Emergency electrical loads are those ac and dc electrical loads required to be in operation during a disruption in the normal power supply to a TPF. These electrical loads include, but are not limited to, the following: 1. Fire Alarm Control System. 2. Supervisory Control and Data Acquisition System. 3. Intrusion Detection System. Page 38

40 4. Control Power. 5. Emergency Lighting System Refer to GO Transit Design Requirements Manual for additional requirements. Emergency Power Requirements An emergency power source, i.e. uninterruptable power supply system, (UPS), rated for at least 8 hours connected electrical load, shall be provided for all emergency lighting, exit signs, and other vital equipment located at TPF. In addition to the noted electrical loads, the emergency power source shall be able to support at least three operating cycles (in which a trip and close operation constitutes one cycle) of all circuit breakers simultaneously. The design of the batteries shall be Lithium Ion or VRLA or approved equivalent, which shall have a life expectancy of at least 20 years and be low maintenance. Transfer from the normal LV power source to the emergency power source shall be automatic. The design of each TPF shall include a receptacle and associated switching equipment to permit the connection of a portable diesel generator during abnormal operating conditions. Page 39

41 14. TES SCADA AND PROTECTION SYSTEM The control, automation, protection and communication tasks for the traction power supply and distribution system will be done by a local network inside the traction power facilities (TPF) and wayside power control cubicles (WPC) and by a line network allowing communication / data transfer between the TPF, WPC and the operations control center (OCC) TPSS SCADA The TPSS SCADA is described in the allied Performance Specification Section EPS : SCADA Electrical Protection System General Requirements The primary aim of the electrical protection system is to protect persons and equipment in case of electrical faults or overloads. A properly coordinated and selective protection system shall be designed to ensure that any electrical faults or overloads are detected and cleared rapidly without unnecessarily interrupting power to healthy sections of the TES. Primary and backup protection shall be provided to achieve the required redundancy. The protection system shall be graded to ensure that faults are cleared by the protection devices located closest to the fault and the area of interruption is minimized. The fault clearing time shall be suitably designed to ensure safety of personnel. The protective devices shall discriminate properly between faults or overload conditions and train starting and accelerating conditions. The protection system shall work properly with the rolling stock onboard equipment and shall take into consideration the maximum short circuit interrupting capacity associated with the rolling stock s 25 kv main circuit breaker. Page 40

42 The reclosing of switchgear after fault/overload tripping may be manual or automatic. This aspect shall be decided for each system taking into consideration potential delay to trains because of power supply dislocation versus safety of personnel. The protection system design shall be coordinated with the utility power provider s protection system. The maximum anticipated short circuit current shall be determined at all switchgear buses and protective devices, which shall be selected with short circuit ratings exceeding the available fault levels. Busbars, cables and overhead conductors shall be rated to withstand short circuit currents without damage for a time sufficient to allow protective devices to operate. The protection system shall prevent the paralleling of two out-of-phase supplies at traction power substations or switching stations. Measures shall be taken to insure that equipment is protected against transient overvoltage resulting from lightning and switching surges. This includes the proper coordination of insulation levels throughout the power distribution system and the provision of a properly designed low impedance grounding system. Protection System for TES 230 kv Transmission Line Protection: This aspect shall be coordinated with Hydro One, the power supply utility. 2x25 kv Bus Protection: Primary protection for the 2x25 kv indoor switchgear is provided by high impedance bus differential relays. Backup protection is via delayed instantaneous trip overcurrent relays and time overcurrent relays. Catenary and Negative Feeder Protection: Primary protection for catenary and negative feeder circuits is provided by directional impedance relays. Backup protection is via time overcurrent relays. The exact fault levels on the HV side shall be obtained from the HV power supply utility. Relay Protection The design of the relay protection system shall: 1. Protect the TES equipment and cables within the TPF, the catenary and NF against short-circuit faults, overloading, and subcomponent failures. Page 41

43 2. Incorporate fault location and discrimination capabilities, including automatic circuit breaker reclosing for catenary and NF circuits, as well as manual local and remote re-closure management. 3. Provide proper coordination and selectivity for rapid fault clearance to the affected area of the system only, preventing as much as possible the loss of power to healthy sections of the TES. 4. Adequately discriminate between short-term high loads and fault conditions. Each HV transformer and autotransformer shall be provided with protective devices, including but not limited to the following: 1. Overcurrent relays on the primary side (HV transformers only), 2. Differential relays, 3. Ground overcurrent relay on the secondary side, 4. Over-temperature protection, and 5. Oil-level and oil-pressure detection relays and alarms. Catenary and NF circuit breakers shall be provided with electronic, microprocessor-based protective relays and devices to protect against short-circuits and conductor overloading conditions. The number and type of protective devices for a particular circuit breaker shall be based on the overall relay protection scheme for the TES. Protective Relaying Scheme for Catenary and NF Fault Detection Circuit breakers equipped with distance relays shall feature multi-stage auto-reclosing capability. Catenary and NF circuit breakers shall have separate protective relaying. The preferred relay protection scheme shall be based on the following general principles: The distance relays shall be located in the TPS, SWS, and PS, and shall be set to protect the feed section for either the catenary system or the negative feeders. The negative feeders shall be protected between either the TPS or PS, or between the PS and SWS, as the case may be. Once the fault occurs, the circuit breakers of both TPFs on either side of the faulty section shall trip. The tripped feeder circuit breakers shall automatically reclose after a short time gap (for example, 4 seconds). If it is a temporary fault, the circuit breakers shall hold on reclosure. This shall cause a power failure in the affected section between two adjacent TPFs for a short period (4 seconds). Page 42

44 If it is a permanent fault, both these circuit breakers shall trip again. The Traction Power Director located in the Operation Control Centre shall deem it to be a permanent fault and take suitable action to isolate the faulty section and inform the TES maintenance organization. The operator shall also advise the corresponding traffic controllers to take other mitigating operating actions like controlling or diverting trains, or initiating singletrack operations. The length of the section under single-track operations can be minimized by suitable switching operations of the motor operated disconnects at the crossovers and the circuit breakers at the affected TPFs. The procedure for fault isolation (i.e., limiting the power loss between adjacent crossovers on one track) can either be automated (driven by PLC-based logic) or manual (conducted by the traction power operators in the Operation Control Centre using remote control of circuit breakers and motorized switches). The protective relaying scheme outlined above shall be analyzed for both normal and contingency configurations of the TES. Additional Protective Provisions of Traction Power Facilities The TES design presupposes running rails electrically insulated from ground, but connected to ground at intervals, through the neutral points of impedance bonds (at least at TPF locations). A part of the return current shall flow through the running rails because they are part of the traction return system. Because of the impedance of the rails, this return current flow shall cause a voltage with respect to the ground, especially at locations away from the ground connections. Electrical safety of the TPSS shall be achieved by: 1. The installations shall be designed and tested such that the permissible touch voltages caused by the traction system under fault conditions or in operating conditions shall not exceed values specified in the Section EPS : Grounding and Bonding. 2. A direct connection shall be made between the return circuit and the grounding system of the TPF (TPS, SWS, and PS). 3. Each TPF shall be connected to the running rails and the aerial ground wire by at least two return cables. Each return cable shall be of sufficient size to carry the maximum load current, thereby allowing for the failure of Page 43

45 one return cable. The connection to the running rails is through impedance bonds. 4. Fuses, non-lockable switches, and joint straps that can be released without a tool shall not be installed in the return circuit. The rated impulse voltage UNi and the short-duration power-frequency (ac) test level voltage UA (kv rms) shall be as given in Table 3: Rated Impulse Voltage and the Short- Duration Power-Frequency (ac) Test Level Voltage. (Refer to Canadian Standard CSA- C22.3 No.8 Railway Electrification Guidelines). Table 3: Rated Impulse Voltage and the Short-Duration Power-Frequency (ac) Test Level Voltage Rated Impulse Voltage and Power Frequency Test Voltage Rated Impulse Voltage UNi (kv crest) Short-Duration Power-Frequency (ac) Test Level Voltage UA (kv rms) Between Catenary/Negative Feeder and Ground Between Catenary and Negative Feeder All traction power facilities shall be fenced against unauthorized access. At locations where TPF are located adjacent to the Metrolinx right-of-way, a fence shall be installed for the complete length of the TPF site between the TPF and the trackside. The grounding of TPF shall be integrated into the general grounding system along the route to comply with the requirements for mitigating electric shock as specified above. Electrical Protection Coordination with Rolling Stock The protection system for the TES shall be designed for a maximum catenary - rails short-circuit fault current of 15 ka (Refer to Table 7 in European Standard EN Railway Applications Power Supply and Rolling Stock Technical Criteria for the Coordination between Power Supply (Substation) and the Rolling Stock to Achieve Interoperability. Page 44

46 Compatibility of protective systems between traction unit (rolling stock) and TPS shall be verified for the following: 1. When any internal fault occurs within the traction units (rolling stock), both the TPS feeder circuit breaker and the traction unit circuit breaker may trip immediately. However, the traction unit circuit breaker should trip in order to avoid the substation circuit breaker tripping. 2. After the substation circuit breakers have tripped, these breakers shall be capable of being reclosed either automatically or manually only, say, after a lapse of at least three seconds. 3. The traction unit circuit breakers shall trip automatically within three seconds after loss of line voltage. 4. On re-energization, the traction unit circuit breaker shall not reclose within three seconds of the line being re-energized. Page 45

47 15. GROUNDING, RETURN CURRENT, AND LIGHTNING PROTECTION The purpose of grounding and bonding system is to establish the basis to accomplish the following: Provide for the electrical safety of rail system personnel, passengers, and other public. Protect the integrity of rail operations and of maintenance requirements from electrical hazard. Protect equipment, cabling, buildings, and structures from electrical hazard. The grounding and bonding of TPSS is described in the allied Performance Specification Section EPS Grounding and Bonding. Page 46

48 16. POWER AND CONTROL CABLES DESCRIPTION 16.1 General All electrical conductors shall be copper. Conductors and cables interconnecting equipment and/or cabinets shall be enclosed in raceways or cable tray systems kv Cables Insulated traction power cables shall be single-conductor with concentric neutral, shielded, external non-metallic jacket that is low smoke and sunlight resistant. The cables shall be suitable for installation in wet or dry locations, in underground conduit or exposed to the weather. The cables shall be rated for 30 kv phase-to-ground, and have 133 percent insulation level. See NFPA 130 for requirements of conductors when routed through tunnels, and see Military (MIL) standard series. The cables shall be rated for 90 ºC continuous conductor temperature, 130 ºC for emergency short-term operation, and 250 ºC for short circuit conditions. The conductors shall be copper, with Class C stranding. The shield and concentric neutral shall be grounded at one end only, at the station ground bus, to avoid circulating ground return currents through the shield and neutral wires. Traction power cables that connect both the 25 kv ac feeder breakers to the catenary and negative along-track feeders, and the running rails to the return bus, shall be sized to carry the maximum rms load currents, with due consideration for the installation environment. Cables shall be de-rated for installations in common underground duct banks or cable trays. Positive and negative 25 kv feeders and neutral return feeders shall be standardized in multiples of a single copper conductor size to achieve the required circuit ampacity. The cables shall have sufficient ampacity to carry the maximum rms current imposed by the worst-case operating scenario on a continuous basis, without exceeding the 90 ºC conductor temperature limit. Page 47

49 16.3 Low Voltage Cables Low voltage ac and dc power and control cables shall be copper conductors, rated for 600 V ac, with maximum conductor temperature of 90 ºC, and shall be suitable for installation in conduits, ducts, cable troughs, and cable trays. Cables exposed to the outdoor environment shall have a weather resistant jacket. Instrumentation cable shall be 600 V insulated, multiple shielded, certified for installation in conduits, ducts, cable troughs, and cable trays. For multi-pair twisted cable, each pair shall be individually shielded and the cable shall have an overall shield insulated from the individual pair shields. Cable splices shall not be permitted Segregation Insulated cables of different voltage classes shall not occupy the same conduit, cable tray, pull box, or manhole. An underground ductbank may contain conduits for low voltage power and control cables, as well as high voltage traction power cables. However, separate pull boxes shall be provided for each type of cables. For increased flexibility and system reliability during maintenance, 25 kv positive feeder conductors, 25 kv negative feeder conductors, and rail return feeder conductors shall not be routed through the same manholes and pull boxes. At TPF, if cables for the positive, negative, and neutral circuit need to share an overall common enclosure (such as cable trench), then partitions or barriers shall be provided to achieve circuit separation. Page 48

50 17. INSTALLATION GUIDELINES Hydro One shall be designing and constructing or installing the TPS. Installation guidelines shall be developed later when design inputs from Hydro One are available. The system shall conform to all applicable codes, standards, and guidelines including specifications of Hydro One and equipment manufacturers instructions. Page 49

51 18. TESTING The equipment, assembly, sub-system, and the system shall be tested per the NETA ATS Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems (2013), other applicable codes, standards, and the manufacturers guidelines. All 230 kv equipment including circuit breakers, buses, disconnect switches, protection and metering equipment, main transformers, and possibly 25 kv equipment such as switchgear, buses, and disconnect switches in the TPS shall be designed, procured and installed by Hydro One (see note, clause 8.1). This clause shall be further populated once detailed information is available. In anticipation of receipt of information from Hydro One the following testing requirements are specified: 18.1 Factory and Installation Tests Factory tests shall include design and production tests performed prior to shipment of the equipment. Unless otherwise indicated, Metrolinx may waive the requirements for design tests upon review of test procedures, test results, and/or certified documentation of like equipment. Tests results on like equipment or materials shall be submitted for the design tests that are to be waived. All wiring within the respective cubicles and control panels and all interconnecting wiring between cubicles shall be tested before shipment. All wiring shall be checked for accuracy, open circuits, short-circuits, ground connections, and insulation integrity by means of high-potential, continuity, and operational tests. All wiring shall be given a high-potential test of 2,500 volts dc to ground for one minute. The wiring shall be checked completely, including inter-connections required at shipping splits. Pre-Packaged Control Building: Perform water test at building joints. The HVAC system shall be tested according to manufacturer s instructions in order to verify its proper functions and settings. 1. Perform air quantity measurements in main and branch ducts by Pitot tube traverse of the entire cross-sectional area of the duct. Measure ducts Page 50

52 having velocities mps (1,000 fpm) or more, by inclined manometers (draft gauge) and magnehelic gauges. Perform air measurements required for ducts having velocities of less than mps (1,000 fpm) with micromanometers, hook gauges, or similar low pressure instruments. Seal openings in ducts for Pitot tube insertion with snap-in plugs after air balance is completed. Determine outlet and inlet air quantities by direct reading velocity meters in accordance with the register and grille manufacturer s recommendation. 2. Obtain total air quantities by adjustment of fan speeds or blade setting. Adjust branch duct air quantities by volume or splitter dampers, permanently mark damper operators after air balance is complete so that they can be restored to their correct position if disturbed at any time. Maintain highest possible fan efficiency during balancing. 3. Volume damper may be used to balance air quantities at outlets and inlets provided final adjustments do not produce objectionable sound levels or drafts. Air quantity adjustment by outlet deflectors, grids, or air scoops shall not be permitted. High Voltage AC Power Cables As a minimum, the following production tests shall be performed: 1. Conductor Resistance, 2. Insulation Resistance, 3. High Voltage ac, 4. Shield Resistance Measurement, and 5. Partial Discharge (Corona). AC and DC Control Power Systems Battery All required tests indicated in IEEE 450 shall be performed on all batteries. Battery Charger The following tests indicated in NEMA PE5 as "Design Test" shall be performed on one (1) battery charger: 1. Dielectric test, 2. Circuit operation test, 3. No-load test, and 4. Maximum output current test. Page 51

53 The manufacturer s standard tests shall be performed on all battery chargers. Distribution Panels The manufacturer s standard production tests shall be performed on all ac and dc distribution panels. Traction Power Transformers Design Tests: Design tests shall be performed by manufacturer on one transformer prior to series production. Routine Tests: Routine tests as specified in Table 4: Routine and Design Tests of Traction Power Transformers shall be performed by manufacturer on each transformer. Tests specified in Table 4 shall be performed in accordance with ANSI/IEEE C unless otherwise specified in this Specification. Table 4: Routine and Design Tests of Traction Power Transformers TESTS Routine Design Resistance Measurements Ratio (Note 1) Polarity and Phase Relation No-Load Losses and Excitation Current Impedance Voltage and Load Loss (Note 2) Temperature Rise (Note 3) Dielectric Tests: Low Frequency (Note 4) Lightning Impulse (Note 5) RIV (Partial Discharge) Insulation Power Factor Insulation Resistance Audible Sound Level (Note 6) Short-Circuit Capability (Note 7) Mechanical: Lifting and Moving Devices Pressure Leak Load Tap Changer (Note 8) X X X X X X X X X X X X X X X X X Page 52

54 Note 1: Ratio test shall be performed on all tap positions of the load tap changer. Note 2: Short circuit impedance and reactance measurements shall be performed on the nominal tap position and on the extreme tap positions of the load tap changer. Note 3: Temperature rise test shall be performed in accordance with the procedure of the ANSI/IEEE C Note 4: Partial discharge measurement shall be performed during the induced voltage test to demonstrate that there is no damaging corona. Note 5: If the load tap changer is located at the centre point of the primary winding, the manufacturer shall ensure that the load tap changer shall be subject to the full wave impulse voltage. The appropriate test procedure shall be submitted for approval. Impulse tests shall be performed with the LTC on nominal and extreme positions. Note 6: Sound level shall not exceed the values specified in NEMA standard TR1. The load tap changer shall be on the tap position on which the highest audible sound level is produced. Note 7: Short circuit tests may be required on one unit. Note 8: Routine tests shall be performed on the load tap changer when completely assembled on the transformer. Routine tests shall be performed in accordance with relevant standards. Installation Tests The following tests shall be performed after installation of each traction power transformer: 1. Insulation test between windings, all windings to ground, and core to ground using 2,500 Vdc megohmmeter; 2. Routine/Functional tests of protective devices; 3. Tap changer test with turn ratio test on all taps for proper tap setting; 4. Oil sample tests; and 5. Busbar tests. Page 53

55 Auto Transformers Design Tests: Design tests shall be performed by the manufacturer on one autotransformer prior to series production. This autotransformer shall be subject to the design tests specified in Table 5: Routine and Design Tests of Autotransformers. Routine Tests: Routine tests as specified in Table 5 below shall be performed by manufacturer on each autotransformer. Tests specified in Table 5 shall be performed in accordance with ANSI/IEEE C unless otherwise specified in this Specification. Table 5: Routine and Design Tests of Autotransformers TESTS Routine Design Resistance Measurements Ratio Polarity and Phase Relation No-Load Losses and Excitation Current Impedance Voltage and Load Loss Temperature Rise (Note 1) Dielectric Tests: Low Frequency (Note 2) Lightning Impulse RIV (Partial Discharge) Insulation Power Factor Insulation Resistance Audible Sound Level (Note 3) Short-Circuit Capability (Note 4) Mechanical: Lifting and Moving Devices Pressure Leak X X X X X X X X X X X X X X X X Note 1: Temperature rise test shall be performed in accordance with the procedure of the ANSI/IEEE C Page 54

56 Note 2: Partial discharge measurement shall be performed during the induced voltage test to demonstrate that there is no damaging corona. Note 3: Sound level shall not exceed the values specified in NEMA standard TR1. Note 4: Short-circuit test may be required on one unit. Control and Indication Panels Relays: Meters: 1. Design Tests: Design tests shall be, or shall have been, performed on one relay of each type and rating in accordance with ANSI/IEEE C Production Tests: Production tests shall be performed on all relays in accordance with ANSI/IEEE C Functional tests of all devices by secondary injection (simulating input and output as necessary. 1. Design Tests: Design tests shall be, or shall have been, performed on one metre of each type and rating in accordance with ANSI/IEEE C Production Tests: Production tests shall be performed on all metres in accordance with ANSI/IEEE C Functional tests of all devices by secondary injection (simulating input and output as necessary. Annunciator Panels: 1. Design Tests: Design tests shall be, or shall have been, performed on one annunciator panel of each type with all accessories in place in accordance with ANSI/IEEE C , ANSI/IEEE C , and ANSI/IEEE C Production Tests: By means of insulation resistance, continuity, and operation tests all annunciator panels, with all accessories in place, shall be production tested for proper operation, accuracy, short circuits, and open circuits, in accordance with ANSI/IEEE C , ANSI/IEEE C , and ANSI/IEEE C Page 55

57 Programmable Logic Controls (PLC): 1. Design Tests: Design testing shall include voltage spike test, current spike test, radio frequency noise test, vibration test and electrostatic discharge test. 2. Production Tests: Production tests for the PLC shall include burn-in of completed processor, all I/O modules, and power supplies for a minimum of 24 hours to maximum of 100 hours depending upon device complexity. During this test, power shall be periodically cycled with the units functionally operating and continually tested and monitored. Lighting System: 1. Schedule adjustment of exterior lighting system installations to occur during hours of darkness. 2. Test lighting circuits for continuity and operation. 3. Test fixtures and equipment enclosures for continuity of grounding system. 4. Aim and adjust fixtures to provide desired distribution pattern. 5. Test time switches, control devices, and contactors for connection in accordance with wiring diagram. 6. Check tightness of cable connections of time switches, lighting contactors, photo electric controls and limit switches. 7. Test operations of circuits, control devices, and contactors. Upon installation the following features shall be tested and certified for each traction power substation, switching station, paralleling station and WPC (as applicable): 1. Fire Detection System 2. Intrusion Alarm System Page 56

58 Instrument Transformers The instrument transformers shall undergo all routine tests identified in ANSI/IEEE C57.13, including but not limited to: 1. Applied voltage test for primary and secondary windings. 2. Induced voltage test for secondary winding. 3. VT accuracy tests on ratio correction factor and phase angle to confirm 0.15 percent performance at 100 percent voltage on each tap at burdens "O" and "Y". 4. Polarity check. 5. The test standard and ANSI burdens shall be rated and certified by the National Institute of Standards and Technology for accuracy testing of 0.15 percent production units. In addition to the ANSI standard tests for new equipment designs, the following tests shall also be performed on each unit: 1. Insulation power factor (dissipation factor) test to confirm that the insulation power factor of the transformer is equal to or less than 0.5 percent. 2. Partial discharge test shall be performed on each unit to confirm that the unit is partial discharge-free at a minimum of 135 percent of operating line to ground voltage. During the PD test, the unit shall be raised to minimum prestressed level of 200 percent of line to ground voltage. 3. Vacuum leak test down to 80 microns to ensure integrity of welded joints and gaskets. Pre-Packaged 2 x 25 kv Switchgear Design Tests The following tests shall be performed on an ac circuit breaker and switchgear assembly: 1. All applicable tests identified as Design Tests in ANSI/IEEE C37.09 and NEMA SG 4 on the circuit breaker. Page 57

59 2. All applicable tests identified as Design Tests in ANSI/IEEE C , ANSI /IEEE C and ANSI/IEEE C on the switchgear assembly. Production Tests The following tests shall be performed on all ac circuit breakers and all switchgear assemblies: 1. All applicable tests identified as Production Tests in ANSI/IEEE C37.09 and NEMA SG 4 on the circuit breakers. 2. All applicable tests identified as Production Tests in ANSI/IEEE C , ANSI/IEEE C , and ANSI/IEEE C on the switchgear assemblies. Installation Tests The following tests shall be performed after installation of all ac switchgear assemblies in each traction power substation, switching station and paralleling station switchgear building: 1. Continuity and insulation of all buses and wiring. 2. Insulation to ground tests on the buses with circuit breakers "in" and "closed". 3. Electrical operation all circuit functional tests to be carried out (simulating operation of other devices as necessary). 230 kv Circuit Breakers Factory Tests: Factory tests shall be performed as specified in ANSI/IEEE C37.09 and certifications provided. In addition, the following factory tests shall be performed on the assembled circuit breakers, and on individual components as required: 1. Pressure Tests: Each part which may be subjected to pressure in service shall be pressure tested at twice the specified service pressure. 2. Leakage Tests: Leakage tests shall ensure that the leakage rate shall not exceed one percent, per year. 3. Internal Discharge Tests: Measurement of the corona inception and extinction level at refilling pressure shall be made and recorded. Page 58

60 4. Power Frequency Test: Each assembly shall be subjected to powerfrequency voltage withstand tests to verify the proper installation of the conductors and insulators. 5. Low frequency dielectric tests and all other standard production tests on each circuit breaker. 6. Complete wiring and control circuit test and check for verification that all circuits are operational for each circuit breaker. Production Tests: The following production tests shall be performed on an assembled circuit breaker: 1. Impulse tests on one (1) circuit breaker. 2. Heating test on one (1) circuit breaker. 3. Interrupting current test on one (1) circuit breaker. Manually and Electrically Operated Disconnecting Switches The following tests shall be performed on one manually operated and one electrically operated disconnecting switches: 1. Dielectric tests. 2. Short-time current tests. 3. Temperature-rise test. Production Tests The following tests shall be performed on all manually and electrically operated disconnecting switches: 1. Operation of all components. 2. Power frequency dielectric withstands. 3. Electric resistance of current path Project Site Installation Verification and Acceptance Tests Installation Verification Inspection and Tests Field installation of equipment and materials shall be subjected to installation verification inspection and tests on completion of the work, which shall include the following: Page 59

61 Traction power substation, switching station, paralleling station and WPC equipment: 1. Verify by visual inspection that reassembled equipment, components, bus, and accessories are correctly installed and labelled in accordance with approved shop drawings, and are free from damage. 2. Perform mechanical checks on the physical integrity of all equipment furnished under this contract. These tests shall include, but are not be limited to, the racking-in and racking-out of all circuit breakers, operation of all devices, interlocks, doors, access panels, etc., to demonstrate proper operation and fit. 3. Perform insulation resistance test on indoor ac switchgear main bus, control and indication panels, outdoor circuit breakers, traction power transformers and autotransformers, and control panels using a 2,500 V dc mega ohmmeter. 4. Perform continuity check and dielectric tests on interconnecting wiring and bus. 5. Perform calibration, functional, and operating tests of equipment, devices, and circuits in accordance with manufacturers instructions. 6. Verify that settings of protective relays and devices are in accordance with proposed settings as approved by the Authority. 7. Verify that manually and electrically operated ac disconnecting switches are correctly installed in accordance with manufacturer s instructions and approved shop drawings. 8. Perform dielectric tests on main current carrying parts and insulation resistance tests on control circuits of ac disconnect switches. 9. Perform functional and operating tests in accordance with manufacturer s instructions of ac disconnect switches. 10. Perform installation/field tests for the transformers mentioned in clause 18.1 above. Grounding Systems: Page 60

62 1. Verify that grounding systems at each traction power substation, switching station and paralleling station are installed in accordance with the Contract Documents. 2. Verify continuity of ground connections to ground grid and to isolated ground rods using an ohmmeter. 3. Test each grounding system using the fall-of-potential method to measure the total resistance to ground of the system. Total resistance at each traction power substation, switching station and paralleling station shall not exceed the indicated values on the Contract Documents. Wire and Cables: 1. Verify continuity of control wiring and power cabling from terminal to terminal and verify circuit connections and identification in accordance with approved shop drawings. 2. Verify that bending radii of cables are within approved limits 3. Measure insulation resistance of control wiring and power cabling, using a megaohmmeter. Functional Tests: General: 1. Functional tests shall be conducted on each traction power substation, switching station, paralleling station, and WPC. 2. Contractor shall assume full responsibility for performing required tests and for any loss or damage to the provided equipment because of the tests, and to replace and retest equipment and materials found to be defective or in noncompliance with the Specifications. 3. Circuits shall be end-to-end tested within the facility to prove full functionality, indication, control, and metering to the traction power facility/wpc interface points. As far as possible alarms and indications shall be operated from the relevant protective devices. Checking for correct SCADA indication and control shall also be verified as far as practically possible. Page 61

63 4. A report shall document the results obtained from the integrated system tests. Report format shall be similar to that specified for equipment shop tests. Relays, Meters, and Instrument Transformers All relays, meters, and instrument transformers shall be checked for accuracy, performance, operation, proper setting, and calibration, as per ANSI/IEEEC37.90, ANSI/IEEE C and ANSI/IEEE C57.13 and the relay coordination study performed by the Contractor. 1. Relay Checking Relay checking, setting, and calibration shall be performed separately from the overall inspection and testing. 2. Test Current Test current shall be injected into the current circuits at the current transformer terminals to ensure protective relays operate properly by tripping their respective breakers and are polarized correctly, and to ensure that instruments read correctly and that meters are calibrated. 3. Checking Instruments and Telemetering Transducers Instruments and telemetering transducers shall be checked for accuracy at quarter, half, and full-scale points. 4. Indicating Setting and Date After relays have been set, a small white card stating the setting and data shall be placed within the relay case. Local Annunciator Panels The following tests shall be performed in accordance with the control schematics and wiring diagrams: 1. Each device shall be subjected to the respective manufacturers standard production tests. 2. By means of insulation resistance, 100 percent point-to-point continuity, and operation tests, each local annunciator panel shall be checked for proper operation. Supervisory Control Interface Terminal Cabinets All terminal blocks shall be subjected to the manufacturers' standard tests. Fire Detection System After the smoke sensing fire detection system is completely installed, it shall be tested for continuity and correct operation in accordance with NFPA 72. Page 62

64 Programmable Logic Controller (PLC) and all associated hardware and software components Special Tests In addition to the specified tests, special tests may be called for at the discretion of Metrolinx, on equipment provided under the Contract. Special tests shall be performed to verify compliance of the equipment and components with the Specifications. The cost of such special tests required by Metrolinx on any equipment or component that is proven to comply with the Specifications shall be at the expense of Metrolinx. The cost of special tests on any equipment or component that is proven not to comply with the Specifications shall be at no expense to Metrolinx. Page 63

65 19. OPERATIONAL AND MAINTENANCE REQUIREMENTS 19.1 Operational Requirements The TPSS, in conjunction with the OCS, shall be designed to meet the following operational requirements within the safety parameters specified in clause 23: 1. The trains should be able to run at the design peak frequency of the trains for the Lakeshore, Kitchener, and Union Pearson Express (UP Express) corridors, per Table 6: Train-Operation Plan for the Reference Case ( ). Page 64

66 Table 6: Train-Operation Plan for the Reference Case ( ) TRAIN OPERATION PLAN FOR THE REFERENCE CASE: Year Corridor Train Frequency during Peak Hr. in Peak direction Max Train Speed (kph (mph)) Train Consist Lakeshore West (95) Lakeshore East (95 Kitchener (80) 1 electric loco + 10 bi-level cars or 12 bi-level EMU cars 1 electric loco + 10 bi-level cars or 12 bi-level EMU cars 1 electric loco + 10 bi-level cars or 12 bi-level EMU cars UP Express 4 TBD 1 3 single level EMU cars 2. There must be no degradation of train performance in case of single contingency conditions. Single contingency conditions refers to the isolation of any one power transformer in a TPS, any one autotransformer in a paralleling station/switching station, or of the NF for any one electrical section. 3. There must be no stranding of trains in case of double contingency conditions, although some reduction in train speeds or acceleration may occur. Double contingency conditions refers to the simultaneous occurrence of more than one single contingency condition in any electrical section. 1 To be provided by Metrolinx Page 65

67 4. The system shall support the maximum train current, the tractive effort and braking effort available at different speeds, and the train acceleration, deceleration, and adhesion characteristics Maintenance Requirements The maintenance requirements for TPSS are presented in EPS Operations and Maintenance. Page 66

68 20. PERFORMANCE REQUIREMENTS The TPSS shall continue to perform satisfactorily under voltage and system frequency ranges specified hereunder. The TPSS shall also permit the use of regenerative braking as service brake and as an emergency brake System Voltage The system voltage (U) shall be the potential at the train s current collector or elsewhere on the catenary, measured between the catenary and the rail return circuit. It shall be the rms value of the fundamental ac voltage and its values shall be as follows (Refer to Sections 3.2 and 4.1 of European Standard EN : Railway Applications - Supply Voltages of Traction Systems): The nominal voltage (Un), (the designated value for the system voltage), shall be 25 kv. The highest permanent voltage (U max1 ) (the maximum value of the voltage likely to be present indefinitely), shall be 27.5 kv. The highest non-permanent voltage (U max2 ) (the maximum value voltage likely to be present for a limited period (as defined below)), shall be 29.0 kv. The lowest permanent voltage (U min1 ) (the minimum value of voltage likely to be present indefinitely), shall be 19.0 kv. The lowest non-permanent voltage (U min2 ) (the minimum value of voltage likely to be present for a limited period (as defined below)), shall be 17.5 kv. Voltage Related Requirements The following voltage related requirements shall be fulfilled: 1. The duration of voltages between U min1 and U min2 shall not exceed 2 minutes. 2. The duration of voltages between U max1 and U max2 shall not exceed 5 minutes. If voltage between U max1 and U max2 is reached, it shall be followed by a level below or equal to U max1 for an unspecified period. Page 67

69 Voltages between U max1 and U max2 shall only be reached for nonpermanent conditions such as regenerative braking. 3. The voltage at the busbar of the substation at no-load conditions shall be less than or equal to U max1. 4. Under normal operating conditions and under single contingency conditions, voltages shall lie within the range U min1 U U max2. 5. Under abnormal operating conditions (double-contingency situation), the voltage in the range U min2 U U min1 shall not cause any damage or failure, and shall permit continuing vehicle operation with some significant degradation. Rated vehicle power and performance shall not be available but reduced operation shall be possible assuming on-board logic shall automatically degrade the performance of the traction system (rolling stock) and auxiliaries. 6. The setting of under-voltage relays in fixed installations or on board rolling stock shall be from 85 percent to 95 percent of U min2. 7. The following acceptance criteria for Quality Index of Power Supply for ac 2x25 kv autotransformer feed configuration shall be satisfied (Refer to Section 8 of EN 50388: Railway Applications: Power Supply and Rolling Stock - Technical Criteria for the coordination between power supply (substations) and rolling stock to achieve interoperability): 8. U m = > 22.5 kv 9. U i => 19 kv (U min1 - Lowest permanent voltage) 10. Where, Mean Useful Voltage (Um) is the mean value of all rms voltages analyzed in the system simulation study, and gives an indication of the quality of the power supply for the entire system during the peak traffic period in the timetable, and 11. U m = Σ U i /N where Ui is the rms ac voltage over the i th second during the peak period for all trains in the system, and N is the total number of observations. 12. These criteria shall be verified by a traction power simulation study using the specific Metrolinx design parameters. Page 68

70 20.2 System Frequency The nominal frequency of the supply voltage shall be 60 Hz. Unless the requirements of the power supply utilities are more stringent, for systems with synchronous connection to an interconnected system under normal operating conditions, the mean value of the fundamental frequency measured over 10 seconds shall be within a range of: Hz +/- 1% (i.e., 59.4-Hz to 60.6-Hz) for 99.5% of a given year Hz +4% / -6% (i.e., 56.4-Hz to 62.4-Hz) for 100% of the time Regenerative Braking The TPSS and the associated OCS shall be designed to permit the use of regenerative braking as a service brake and as an emergency brake. The use of regenerative braking shall be facilitated by one or more of the following: 1. Transfer of braking energy back into the OCS for use by any other trains that are drawing power from the OCS and are located in the same feed zone as the braking train; 2. Transfer of braking energy back to the power supply utility company s network in case trains in the same feed zone do not draw the full regenerated power; 3. Provision of rheostatic braking resistors or other electrical energy absorbing units on-board the trains; and 4. Provision of automatic assured receptivity unit (AARU) braking resistors within traction power supply substations. The TPS control and protection devices shall be configured to allow regenerative braking. Trains may continue to use regenerative braking to supply energy to auxiliary loads if the line voltage is higher than 29 kv. The remaining energy shall be dissipated through rheostatic braking. Page 69

71 21. INTERFACE REQUIREMENTS 21.1 Utilities The TES Design shall conform to the Metrolinx standards for dealing with utilities HV Power Utility The TPSS design shall conform to (i) all Metrolinx guidelines, standards, and instructions regarding HV power supply interface, and (ii) relevant guidelines and specifications of Hydro One, the HV power supply utility Communications The TES design shall coordinate with the Communications design. With respect to TES SCADA and voice communications facilities required for the TPSS, there is an interconnection with the communications subsystem between (i) the TPF and wayside power control cubicles (WPC) on one side, and (ii) the OCC on the other. The TES design shall ensure that all requirements associated with this interconnection are met. The communications system must be compatible with existing and planned Metrolinx communications and IT systems Signalling System The TES design shall coordinate with the Signalling design with respect to: 1. Developing the locations of impedance bonds for connecting rail to traction return/ground at traction power facilities; 2. Decisions regarding additional ground connections between rail and ground to bring accessible/touch voltage within permissible limits; and 3. Decisions regarding the location of section breaks in relation to signals to provide protected work zones. Page 70

72 21.5 Rolling Stock The TES design shall coordinate with the rolling stock design with respect to: 1. The design requirements associated with electrical protection coordination between TPSS and rolling stock. 2. Regeneration of electricity: Train sets operating on the Metrolinx network shall use regenerative brakes as service and emergency brakes. The TES design shall verify the boundary conditions (e.g., voltage limits for regenerated energy to be fed into OCS) with the rolling stock design; 3. Electromagnetic Interference / Electromagnetic Compatibility (EMI/EMC) aspects: The rolling stock design shall require demonstrating that the rolling stock currents comply with harmonic limits per IEEE 519, or to a stricter standard if so required by the High-Voltage HV power supply utility company. 4. System Voltage: The rolling stock design shall demonstrate that the rolling stock performs as specified within the range of system voltages specified in the preceding clauses. 5. The frequency of the electric power regenerated by the rolling stock shall conform to the requirements of the power supply utilities Civil and Architectural Works The TES design shall coordinate with Metrolinx and their consultants/contractors for the respective geographic area(s) with respect to: 1. TPF site access control, fencing, paving, drainage, access roads, and parking; 2. TPF grounding system (soil resistivity); 3. Duct banks, manholes, and interconnections between TPSS and OCS, between TPSS and signalling, and between TPSS and the HV power utility network; Page 71

73 4. Locations of wayside power control cubicles (WPC) along the route alignment, on ground, on viaducts, and in trenches and tunnel; and. 5. Utilities to be relocated. Page 72

74 22. RELIABILITY, AVAILABILITY, AND MAINTAINABILITY REQUIREMENTS The traction power supply system shall be designed and protected so that is easy to maintain. The relay protection system shall be such that the faulty section can be easily identified and isolated. The TPSS shall be a redundant system to make it more reliable (Refer to Clauses 8 and 11 for details). Spare parts shall be provided as recommended by the equipment manufacturer. The traction power supply system shall meet all the RAM requirements specified for this system. Page 73

75 23. SAFETY REQUIREMENTS 23.1 Safety Design The design of the TPSS and associated site works shall conform to requirements in EPS Safety and Security, and shall incorporate the following principles: 1. Hazards identified by engineering hazard analysis shall be avoided, eliminated, or reduced through design choices, material selection, or material substitution. 2. Fail-safe principles shall be incorporated where failures could disable the system, cause human injury, cause damage to equipment, or cause inadvertent operation of critical equipment. 3. Equipment components shall be located to provide access to required personnel during operation, maintenance, repair, or adjustment. Such access shall not expose required personnel to hazards such as entrapment, chemical burns, electrical shock, cutting edges, sharp points, or toxic atmospheres. 4. Measures shall be taken to prevent or discourage unauthorized persons from entering hazardous areas. 5. All components containing or generating obnoxious, flammable, or harmful gases shall be vented to the outside. 6. Cables and wires of different systems, and/or high and low voltage conductors, shall be physically segregated or separated from each other and rated in accordance with the requirements specified in OESC, CEC and IEEE-1100, as applicable. Page 74

76 23.2 Equipment / Enclosure Safety Signage Safety signage shall be provided at all TPF in accordance with applicable codes and standards (e.g. OESC, OBC, OSHA, CEC, NESC, CAN/ULC-801, etc.) Protection Barrier Protective barriers shall be provided at traction installations that are subject to road vehicle damage Fire and Life Safety A fire alarm control system shall be installed at each prefabricated 25-kV switchgear room in accordance with OESC, OBC, NFPA 72, CFR Title 19, and the instructions and guidelines of the local authority having jurisdiction. Fire alarm devices, initiating devices, notification appliances, and signalling line circuits shall be designated as Class A, as defined in NFPA 72, and per instructions of the local authority having jurisdiction. The fire alarm system shall be electrically supervised and shall be furnished with emergency backup power. A portable emergency eye-wash unit shall be provided at a location adjacent to the TPF battery. A portable fire extinguisher, sized per federal, provincial, and local code requirements, shall be provided in each prefabricated 25 kv switchgear room. Conform to all applicable local codes and regulations. Page 75

77 24. ENVIRONMENTAL REQUIREMENTS The TPSS design shall satisfy all environmental requirements including noise control and EMI/EMF. Page 76

78 APPENDIX A: SCHEMATICS Figure 1: 2x25 kv Typical Section of Autotransformer Feed Configuration Page 77

79 Version 7 October 2014 Figure 2: Typical Layout of Traction Power Substation

80 Figure 3: Typical Layout of Switching Station Page 79

81 Figure 4: Typical Layout of Paralleling Station Page 80

82 Figure 5: Typical 230 kv Receiving Gantry Page 81

83 Figure 6: Typical Alternative TPF Locations with respect to Tracks Page 82

84 Version 7 October 2014 APPENDIX B: BRIEF TECHNICAL SPECIFICATIONS OF MAJOR EQUIPMENT B-01 General All the TPSS sub-systems, assemblies, sub-assemblies, and equipment shall conform to approved Canadian Standards and OESC. In the following clauses additional relevant North American, European and international standards have been listed against specific equipments and the design shall conform to these standards also. B-02 HV Transformers HV transformers shall be outdoor type, mineral oil insulated and self-cooled, with 30- MVA ONAN nominal rating. The transformers shall be furnished and installed without cooling fans. However, transformer design shall incorporate provisions for possible installation of cooling fans in the future. The HV transformers shall conform to the appropriate duty class as specified in the European Standard EN 50329:2003+A1:2010, corresponding to the load curves based on the traction power load flow study. The HV transformers shall be single-phase, with the primary winding connected between two phases of the incoming 230 kv line of the local utility company. The secondary winding may be constructed as either: 1. One winding with its centre point brought out and grounded; or 2. Two separate windings such that the voltages in them are in counter-phase (180 degrees apart). The no-load voltage on the secondary side, assuming nominal 230 kv on the primary and a neutral tap, shall be 55.0/27.5 kv. Transformer impedance shall be around 10 percent on a 30 MVA basis. For TPF with more than one transformer, sufficient space or masonry fire barriers between the transformers shall be provided to prevent a transformer fire from damaging other transformers.

85 The design of the transformers shall minimize the generation of acoustic noise and the noise levels produced shall not exceed the values specified in the NEMA Standard TR-1: Transformers, Regulators, and Reactors, or the limits imposed by the local municipalities if these are stricter. Each HV transformer shall be equipped with an on-load tap changer. See also IEEE Standard C and IEEE Standard C for additional requirements. B-02 Autotransformers Autotransformers (AT) shall be outdoor type, mineral oil insulated, self-cooled, with 10 MVA ONAN nominal rating. The AT shall conform to the appropriate duty class as specified in the European Standard EN 50329:2003+A1:2010, corresponding to the load curves based on the traction power load flow study. The autotransformers shall be single-phase, with the primary winding connected between the catenary and NF circuits, and the centre tap grounded and connected to both the running rails and the static wires. The nominal voltage of the primary winding shall be 50.0 kv between the winding terminals, and 25.0 kv to ground. The turn ratio from OCS side and centre tap to centre tap and NF side shall be 1:1. Autotransformer design shall minimize leakage, and the autotransformer impedance shall be around 1.2 percent. B-03 HV Switchgear Each HV transformer shall be connected to the incoming utility line via outdoor HV switchgear of the same voltage class as the utility supply line (nominal 230 kv). The switchgear shall include a circuit breaker, motorized gang-operated air isolation switches, instrument transformers, and other accessories. The basic impulse level (BIL) rating of the outdoor HV switchgear shall be 900 kv for the 230 kv line. The power circuit breaker shall be outdoor type, and either 1) 242 kv rms maximum operating voltage, or 2) 900 kv BIL, 2-pole, SF6 insulated, free standing. Short-circuit interrupting current capability shall be 40 ka. The circuit breaker shall be rated for operation on a nominal or 230 kv, effectively grounded utility transmission system. It shall be similar to a 3-phase circuit breaker of the same voltage rating, except that one phase/ pole shall not be used. Page 84

86 B-04 Prefabricated Enclosure for 25 kv Indoor Switchgear The 25 kv phase-to-ground class switchgear and associated control and protection systems of the TPS, SWS, and PS shall be indoor type. The medium-voltage switchgear and related protection control, as well as the auxiliary systems at each TPF site, shall be housed in a prefabricated walk-in, climatized, transportable metal enclosure (or in two separate enclosures). The enclosure shall be fabricated from sheet steel, mounted on structural steel base, and provided with internal and external high durability paint finishes designed to prevent corrosion over the life of the enclosures. Non-painted steel surfaces shall be hot-dipped galvanized after fabrication. At least two doorways shall be provided, located at diametrically opposite ends of the enclosures, to permit an unobstructed means of egress in accordance with the local jurisdictional requirements. One of the doorways shall be sized and located to allow removal or replacement of the largest piece of equipment in the room, and shall be located such that the equipment can be moved through the enclosure to the outside for transporting off-site. The design of the enclosures shall ensure a dry internal environment within the specified temperature and humidity limits. The enclosures shall be designed to withstand the appropriate level of structural, wind, and seismic loading for this area. The floor and walls of each enclosure shall be designed to support the equipment, raceway, and cable tray systems that have been installed and to provide openings to cable trenches, without buckling, bending, or sagging. B kv Single Phase Switchgear The design of the 25 kv, single-phase, 60 Hz, ac switchgear shall include at a minimum the following features: 1. The 25 kv class single-phase circuit breakers shall be designed per applicable European standards for railway applications, shall be suitable for indoor installation, and shall have a rated maximum operating voltage to ground of 29 kv. Circuit breakers protecting catenary or NF circuits shall be single pole. Circuit breakers for the autotransformers or on the secondary side of the HV transformers shall be two-pole. Nominal phaseto-ground voltage for both single-pole and double-pole circuit breakers Page 85

87 shall be 25 kv in all the TPF. The pole-to-pole nominal voltages for the two-pole circuit breakers shall be twice the respective voltages to ground. 2. The circuit breakers shall be either of the sealed vacuum or SF6 type. If SF6 circuit breakers are proposed, an evaluation shall be provided to indicate that such medium voltage indoor switchgear does not conflict with provincial or local regulations concerning the SF6 gas and its byproducts from arc extinguishing as hazardous materials. 3. The ac switchgear shall be metal-clad with draw-out circuit breakers and of the same voltage rating as the circuit breakers. The stationary contacts of the circuit breakers can be connected directly to the common bus without a disconnect switch. The basic impulse level of the switchgear shall be 200 kv or higher. 4. Power connections from the catenary and NF of each track to the 25 kv buses of TPS, SWS, and PS shall be through single-phase circuit breakers (forming part of the indoor switchgear line-ups) and outdoor (catenary feeding) gantry-mounted disconnect switches. The latter shall be motorized and connected in series with the circuit breakers, to provide visible circuit isolation means between tracks and TPF. The disconnects in series with the circuit breakers shall be no-load type, and shall be interlocked with the respective circuit breaker so that the switch cannot be operated unless the circuit breaker is open. 5. Motorized, load-break, N.O. disconnect switches shall be provided at phase breaks and at catenary sectionalizing gaps to provide for electric continuity across the gaps during contingency operations, if such continuity is required. 6. Switchgear in the TPF and outdoor mounted disconnect switches shall be appropriately interlocked with the associated circuit breakers to ensure the safety of O&M personnel and equipment for all possible circuit configurations; and to avoid inadvertent paralleling of different electrical sections (which shall be supplied by out of phase voltage systems). 7. Equipment interconnecting buses shall be copper. Buses shall be sized to limit temperature rise in accordance with the applicable codes and Page 86

88 standards. Buses shall be adequately supported to withstand the forces from short-circuit currents matching the ratings of the circuit breakers. 8. The design of the switchgear shall include automatic shutters to protect personnel from accidental contact with live power circuits when the truckmounted circuit breaker is removed from the cubicle. 9. The design of the circuit breaker shall include means for physical (padlocking) lockout/tag-out when the circuit breaker is in the disconnected position. 10. Visual indication of the status of the circuit breaker (i.e. closed or open) shall be displayed on the front door of the circuit breaker cubicle by indicator lights and mechanical flag indicators. 11. All circuit breakers and motorized disconnect switches shall be locally and remotely controlled. Control means the ability to operate all switchgear remotely from the Operations Control Centre (OCC), and locally via a mimic annunciation panel, graphical user interface, and/or control switches on the equipment. 12. A mimic annunciation panel (MAP) shall be provided at each TPF that permits O&M personnel to monitor and control circuit breakers and/or disconnect switches located at the traction power facility and its vicinity. The design of the MAP shall include a sectionalisation plan on the exterior of the panel, complete with control switches and status indication lights located adjacent to the control switches (of the respective circuit breakers and disconnect switches). 13. Equipment space heaters, which are thermostatically and humid-statically controlled, shall be provided in the ac switchgear cubicles and control equipment cabinets. 14. Feeder cable terminations shall be designed to prevent accidental contact and alleviate voltage stress zones. If no-load break elbows are available for this voltage class from suppliers of elbow style terminations, the cable terminations shall be via elbows. Page 87

89 B-06 Transformer Oil Containment The transformer oil containment system shall have an open area covered with non-skid galvanized steel grating on all sides of the transformer concrete pad. It shall also conform to IEEE-980 and other applicable codes/standards/guidelines, including 40 CFR, Part Oil Pollution Prevention Regulations - published by the Environmental Protection Agency. A sump shall typically be provided at one corner of this structure. All four sides shall slope 1 percent minimum towards the sump. The interior surface of the containment basin shall be painted with epoxy primer and polyurethane finish coat. Waterstops shall be provided at the construction joints. Structural steel beams shall support the galvanized steel grating. A system for reclamation or disposal of spilled oil shall be designed that shall conform to the applicable codes, standards and regulations. An active fire suppression system shall be provided. Utility Interface Equipment shall be required, consisting of the Ancillary Equipment Mandated by Hydro-One to protect a 230 kv Transmission Network. This shall conform to the general requirements specified by Hydro-One. B-07 Equipment Support Steel Equipment support steel (steel members for supporting TPSS equipment) shall be designed to be assembled on site using bolted connections. Equipment support steel shall have a hot dipped galvanized finish, suitable for the intended working environment. Structural steel shall include a cleat or bracket with two holes to permit two-hole grounding and bonding lug connections. See Metrolinx existing instructions and guidelines for additional requirements. B-08 Foundations The design of the foundations for all of the equipment and structural steel located at the TPF shall: Page 88

90 1. Conform to established civil and structural engineering practices, Ontario Building Cond (OBC), International Building Code (IBC), American Society of Testing Materials (ASTM), ACI, and other applicable codes and standards. 2. Be structurally capable of withstanding the live loads and dead loads occurring during installation, operation, and maintenance. 3. Consider, among other issues, the local flood, soil, and seismic conditions at each TPF site. The design of the foundations shall ensure water drains to the site drainage system and prevents standing water at or under equipment and structural steel. See Metrolinx existing instructions and guidelines for additional requirements. The foundations of each prefabricated enclosure for 25 kv indoor switchgear shall include the following features: 1. A concrete slab, extending 150mm (six inches) beyond the outside walls of the enclosure (excluding doorways, which shall be provided with landing pad). 2. Subject to the height between the finished grade and the enclosure floor, a concrete staircase at doorways used for personnel access and egress, designed in accordance with federal, provincial, and/or local codes. 3. A ramp at doorways used for equipment placement and removal (in addition to personnel access and egress), designed in accordance with federal, provincial, and/or local codes. 4. The interface of the indoor switchgear room with the 25 kv cable ducts shall be via cable trench with removable covers. If the connections between power cables and circuit breakers are not near the edge of the foundation, a cable vault underneath the switchgear enclosure shall be provided, as part of the foundation structure. Access to the cable vault shall be via bulkhead entrance or exterior doorway, which shall be large enough (of adequate width, depth and height) to provide convenient working space to maintenance personnel for installation and maintenance of medium voltage cables, terminations, surge arrestors and other equipment required by the system design. Page 89

91 The design of the foundations associated with the HV transformers and autotransformers shall prevent oil from entering the site drainage system and contain fluids in accordance with federal, provincial, and local codes. B-09 Painting and Finishes All electrical equipment enclosures, materials, and appurtenances shall have a corrosion resistant finish and shall be suitable for use in the environment in which they are installed. B-10 Electrical Equipment Enclosures Equipment enclosures shall be of NEMA classification suitable for the environment in which the equipment is operating. B-11 Raceway Exposed conduits shall be rigid galvanized steel (RGS). All raceways shall be installed parallel or perpendicular to the building members of the traction power facilities. The number of bends in any one-conduit run shall not exceed the limit specified in the OESC/CEC. The bend radius of exposed and/or underground raceway systems shall be sufficient to maintain the cable side pressures within manufacturer s recommendations during cable pulling activities and shall conform to applicable codes and standards. All exposed raceways shall be supported or secured to the walls or ceiling of the prefabricated 25-kV Switchgear, as well as Control and Relay Room equipment enclosures in accordance with standard industry practice and the OESC/CEC. Emergency circuits (e.g., fire detection, emergency power) shall not share the same raceway or enclosures with other systems. See Metrolinx instructions and standards for conduits crossing under the track bed. PVC conduits emerging from grade or from concrete and routing on the surface shall be converted to rigid galvanized steel (RGS) conduits; the transition from PVC to RGS shall be done with a coupling that is then covered in a heat shrink sleeve and taped. This transition must take place before emerging from grade or from concrete. PVC conduit emerging from grade but routing directly into an enclosure does not require transitioning into RGS conduit. Page 90

92 All underground raceways shall utilize polyvinylchloride (PVC) schedule 40, reinforced thermosetting resin conduit (RTRC) or similar conduits, be encased in steel reinforced concrete (with red pigment) and comply to the requirements of the OESC, CEC, NESC, CAN/ULC-801, and applicable codes and standards. Underground raceways shall slope away from the TPF and toward manholes, pull boxes, etc., at a minimum rate of 1 in 400. Raceway entrances in manholes, pull boxes, etc., shall be sealed against entry of silt, debris, rodents, etc., into raceways. Tracer tape shall be installed in accordance with Metrolinx guidelines. HV, LV, and communications raceway sharing the same ductbank shall not be routed through the same manholes, pull boxes, etc., and shall be physically separated per applicable codes for the entire length of the ductbank. B-12 Cable Tray Systems Cable tray systems shall comply with NEMA VE 1. Cable tray systems shall be engineered to comply with the following requirements: 1. The cable tray system shall be fully enclosed metal cable trays, hot dipped galvanized after fabrication, with full system appendages. 2. The drop-offs to all different points of utilization shall be conduit. Bushed conduit should be used wherever possible. 3. The cable tray system construction shall be secure and prevent inadvertent access by unauthorized parties. 4. The cable tray system shall have suitable strength and rigidity to provide adequate support for all the contained cables. 5. The cable tray system shall include a means to ventilate the enclosed cables, so the heat generated by the cables can be safely dissipated. 6. The cable tray system shall include barriers to segregate cables of different systems and voltage ratings. 7. The cable tray system shall provide adequate cross-sectional area to permit neat alignment of the cables and avoid crossing or twisting. Page 91

93 B-13 Cable Trenches for Power Cables The interface of the 25 kv ductbanks with the prefabricated 25 kv switchgear houses shall be through cable trenches. Cable trenches shall be equipped with sump area for drainage by gravity or application of portable or fixed pumps as required. Cable trenches shall be sized to accommodate the number and size of 25 kv circuits, with positive/catenary and negative cables separated by solid barriers, or installed on the opposite sides of the same trench. At the foundation of the 25-kV switchgear house, the cable trenches shall transition into a cable vault, with dimensions depending on the locations of the cable terminations at the switchgear. The cable vault shall have sufficient depth and height to provide for ease of installation and maintenance of the cable terminations and other equipment, such as surge arresters. A staircase, external to the prefabricated 25 kv switchgear equipment enclosures, shall be provided to permit access to the cable vault. The design of the cable trenches shall include removable covers, extending a suitable distance from the edge of the switchgear house. If SF6 switchgear is used, specific requirements for the design of the trenches directly below the switchgear shall be developed. In the TPSS design, provision shall be made for all such requirements per existing laws, codes, standards, and regulations. B-14 Disconnect Switch The disconnect switches shall be used as a means of connecting and disconnecting the catenary and negative feeders and for electrically isolating sections of the catenary at section insulator and insulated-overlap or phase-break locations. Disconnect switches shall be for outdoor service for catenary sectionalizing and traction power feeder disconnects. Disconnect switches shall be assembled on galvanized steel channel bases with standard NEMA mounting holes and arranged in coordination with the supporting members necessary to attach to and support on the catenary structures. Materials shall comply with ULC/UL testing and product requirements. Disconnect switch insulators shall be station post type NEMA TR-208, or approved equal. Current-carrying parts shall be of hard-drawn copper. Contacts shall be high pressure, silver-to-silver, self-cleaning by wiping action, self-aligning, and shall be capable of Page 92

94 breaking system charging currents. All hard drawn copper alloy parts used in live parts construction of copper switches shall be 99 percent conductivity, or better. The switches shall be designed and constructed to assure satisfactory operation under all weather conditions, including snow, sleet, and ice, independent of lubrication. The installation shall conform to OESC. Each switch and operating mechanism shall be designed to prevent accidental or unauthorized operation and each operating mechanism shall be arranged for padlocking. Each switch shall be provided with a suitable manual operating mechanism mounted on the side or back of the pole at a height suitable for manual operation. The motor operated disconnect switches (MODs) shall be provided with a motor operating mechanism installed in a weatherproof (NEMA 4X) housing. Control circuitry shall permit electrical control from either a MOD control panel located in the substation control room, or remotely via the RTU of a supervisory control and data acquisition (SCADA) system. Control wiring shall also include an electrical interlock to prevent operation from local control unless permitted by the associated control logic. A main circuit breaker shall be provided to isolate all power and control wiring. The motor shall be of the universal type, with brake mechanism to prevent rotation of the motor shaft and drive train when the motor is de-energized. A suitable detachable handle with non-metallic grip for manual operation of the switch shall be provided in the control cabinet. B-15 Lighting Exterior lighting layouts shall relate to the equipment locations and access and egress routes of both pedestrians and road vehicles. Exterior lighting shall be activated manually by photocell or astronomical clock controls. Exterior lighting, interior lighting, and emergency lighting shall be as per Metrolinx standards. Page 93

95 APPENDIX C: STANDARDS The latest versions of the standards and codes available at the time of issue of the RFP shall be the accepted versions unless the year of issue is specifically mentioned. In case of conflict between different standards, codes and guidelines, the higher standards shall be used. American Railway Engineering and Maintenance-of-Way Association (AREMA) Manual for Railway Engineering, Volume 3 Infrastructure and Passenger, Chapter 33 Electric Energy Utilization American railway Engineering and Maintenance-of-Way (AREMA) Communications and Signals Manual of Recommended Practice ASTM International (ASTM) A123 - Zinc (Hot-Dip Galvanized) Coatings for Iron and Steel Products A153 - Zinc Coating (Hot-Dip) on Iron and Steel Hardware B1 - Hard-Drawn Copper Wire B2 - Medium Hard-Drawn Copper Wire B33 Standard Specification for Tinned Soft or Annealed Copper Wire for Electrical Purposes D Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus F512 - Standard Specification for Smooth-Wall PVC Conduit and Fittings for Underground Installation Canadian Standards Association (CSA) Standards C22.1 Canadian Electrical Code, Part I CAN/CSA-C22.2 No. 0-M91 (R2006) General Requirements Canadian Electrical Code, Part II CAN/CSA-C22.2 No Grounding and Bonding Equipment CAN/CSA-C22.3 No. 1 Overhead Systems Standard for Clearance Distances Page 94

96 CAN/CSA-C22.3 No. 1- M87 Overhead Systems CAN/CSA C22.3 No. 2 General Grounding Requirements and Grounding Requirements for Electrical Supply Stations CAN/CSA C22.3 No. 3 Inductive Coordination (Definitions, Principles, and Practices) CAN/CSA C 22.3 No. 3.1 Inductive Coordination Handbook for Use with CSA Standard C22.3 No. 3 CAN/CSA C88 - M90 (R 2009) Power Transformers and reactors CAN/CSA C 22.3 No. 8 M91 (Reaffirmed 2003) Railway Electrification Guideline CAN3 C M84 Limits and Measurement Methods of Electromagnetic Noise from AC Power Systems CAN3 C308 M85 The Principles and Practice of Insulation Coordination CEMA (Canadian Electrical Manufacturers Association) Standards EEMAC (Electrical Equipment Manufacturers Association of Canada) Standards National Building Code of Canada Ontario Building Code (OBC) Ontario Electrical Safety Code (OESC) Ontario Energy Board Transmission System Code ULC (Underwriters Laboratories of Canada) Standard S Standard on Electric Utility Workplace Electrical Safety for Generation, Transmission, and Distribution Department of Defence (USDOD) Standards MIL Standards: series European Standards (EN) EN Railway Applications Fixed Installations Electric Traction Overhead Contact Lines EN Protective Provisioning Relating to Electrical Safety and Earthing EN Railway applications Insulation Coordination EN Railway applications Overvoltage s and Related Protection Page 95

97 EN Railway Applications Fixed Installations Particular Requirements for ac Switchgear Part 1: Single-phase circuit-breakers with U m above 1 kv Part 2: Single-phase disconnectors, earthing switches, and switches with U m above 1 kv. Part 3-1: Measurement, control and protection devices for specific use in ac traction systems application guide Part 3-2: Measurement, control, and protection devices for specific use in ac traction systems single phase current transformers Part 3-3: Measurement, control, and protection devices for specific use in ac traction systems single phase inductive voltage transformers EN Voltage Characteristics of Electricity Supplied by Public Distribution Systems EN Railway Applications Supply Voltages of Traction Systems EN Railway Applications Fixed Installations Traction Transformers EN Railway Applications Power Supply and Rolling Stock Technical Criteria for the Coordination Between Power Supply (Substation) and Rolling Stock to achieve Interoperability Insulated Cable Engineers Association (ICEA) ICEA S / NEMA WC70 Standard for Nonshielded Power Cables Rated 2000 Volts or Less for the Distribution of Electrical Energy ICEA S V Single layer Thermoset Insulated Utility Underground Distribution Cables International Building Code (IBC) International Electro-technical Commission (IEC) Standards IEC A.C. High Voltage Circuit Breakers IEC Power Transformers IEC Surge Arresters IEC Bushings Page 96

98 IEC On-load Tap Changer (LTC) IEC Electrical Relays IEC Insulating Oil (for High Voltage transformers) IEC A.C. Metal-Enclosed Switchgear and Controlgear for Rated Voltages above 1 kv and Up to and Including 52 kv IEC Specifications Common for High Voltage Switchgear and Controlgear Standards IEC High-Voltage Switchgear and Control Gear Institution of Electrical and Electronics Engineers (IEEE) IEEE 1 - Standard General Principles for Temperature Limits in Rating of Electrical Equipment and for Evaluation of Electrical Insulation IEEE 81 -IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Ground System IEEE 100 IEEE Standard Dictionary of Electrical and Electronic Terms IEEE Master Test Guide for Electrical Measurements in Power Circuits IEEE 242 IEEE Recommended Practice for Protection and Coordination of Power Systems IEEE 383 -IEEE Standard for Type Test of Class IE Electrical Cables, Field Splices and Connections for Nuclear Power Generating Stations IEEE IEEE Recommended Practice for Emergency and Standby Power Systems for Industrial and Commercial Applications IEEE 450 -IEEE Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for Stationary Applications IEEE IEEE Recommended Practice for sizing Large Lead Storage Batteries for Generating Stations and Substations IEEE IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems IEEE IEEE Guide for the Design and Installation of Cable Systems in Substations Page 97

99 IEEE 693 IEEE Recommended Practice foe Seismic Design of Substations IEEE 980 IEEE Guide for Containment and Control of Oil Spills in Substations IEEE 1189 IEEE Guide for Selection of Valve-Regulated Lead-Acid (VRLA) Batteries for Stationary Applications IEEE 1427 IEEE Guide for Recommended Electrical Clearances and Insulation Levels in Air-Insulated Electric Power substations IEEE C2 National Electrical Safety Code IEEE C9.1 Standard for Insulation Coordination IEEE C29.1-Test Methods for Electrical Insulators IEEE C Rating Structure for ac High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis IEEE C Preferred Ratings and Related Required Capabilities for ac High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis IEEE C Application Guide for ac High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis IEEE C Application Guide for Transient Recovery Voltage for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis IEEE C Electric Power System Device Function Numbers and Contact Designations IEEE C Standard Requirements for Electrical Control for ac High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis IEEE C Preferred Ratings, Related Requirements, and Application Recommendations for Low-Voltage Power Circuit Breakers and AC Power Circuit Protectors IEEE C Trip Devices for AC and General-Purpose DC Low-Voltage Power Circuit Breakers. IEEE C Standard for Metal-Enclosed Low-Voltage Power Circuit-Breaker Switchgear IEEE C IEEE Standard for Metal-Clad Switchgear Page 98

100 IEEE C Standard for Metal-Enclosed Interrupter Switchgear IEEE C IEEE Standard for Indoor ac Switches (1 kv-38 kv) for Use in Metal- Enclosed Switchgear IEEE C IEEE Standard for Control Switchboards IEEE C IEEE Standard for Metal-Enclosed Bus IEEE C IEEE Standard Requirements for High-Voltage Switches IEEE C American National Standard for High-Voltage Switches, Bus Supports, and Accessories-Schedules of Preferred Ratings, Construction Guidelines, and Specifications IEEE C Switchgear-High Voltage Air Switches-Rated Control Voltage and Their Ranges IEEE C IEEE Standard Test Code for High-Voltage Air Switches IEEE C Standard loading guide for ac High-Voltage Air Switches (In Excess of 1000 volts) IEEE C Design Tests for High Voltage Fuses, Distribution Enclosed Single-Pole Air Switches, Fuse Disconnecting Switches and Accessories IEEE/ANSI C High Voltage Expulsion and Current-Limiting Type Power Class Fuses and Fuse Disconnecting Switches IEEE C Conformance Test Procedures for Metal clad Switchgear Assemblies IEEE C IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus IEEE C IEEE Standard Definitions for Power Switchgear IEEE C39.1 Requirements for Electrical Analog Indicating Instruments IEEE C Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers IEEE C American National Standards for Transformers 230 kv and Below 833/958 through 8,333/10,417 kva, Single-Phase, and 750/862 through 60,000/80,000/100,000 kva Three-Phase, without Load Tap Changing; and 2,750/4,687 Through 60,000/80,000/1000,000 kva with Load Tap Changing Safety Requirements Page 99

101 IEEE C Standard for Pad-Mounted Equipment Enclosure Integrity IEEE C Standard Terminology for Power and Distribution Transformers IEEE C Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers IEEE C Standard Requirements for Instrument Transformers C IEEE Standard General Requirements and Test Procedure for Outdoor Power Apparatus Bushings IEEE C Guide for Loading Mineral Oil Immersed Transformers (Including Corrigendum 1) IEEE C Guide for Transformer Impulse Tests IEEE C Guide for Acceptance and Maintenance of Insulating Oil in Equipment IEEE C IEEE Trial-Use Guide for Partial Discharge Measurement in Liquid- Filled Power Transformers and Shunt Reactors IEEE C Guide for Transformer Loss Measurements IEEE C Standard Requirements for Load Tap Changers IEEE C Guide for Sound Level Abatement and Determination for Liquid Immersed Power Transformers and Shunt Reactors IEEE C62 - IEEE Surge Protection Standards Collection IEEE C IEEE Standard for Metal-Oxide Surge Arresters for Alternating Current Power Circuits IEEE C IEEE Recommended Practice for Surge Voltages in Low-Voltage ac Power Circuits IEEE C American National Standard Specifications for Power Fuses and Fuse Disconnecting Switches IEEE C American National Standard for High Voltage Current-Limiting Type Distribution Class Fuses and Fuse Disconnecting Switches National Electrical Manufacturers Association (NEMA) 250- Enclosures for Electrical Equipment (1,000 Volts Maximum) Page 100

102 AB 1 - Molded Case Circuit Breakers and Molded Case Switches AB 3 - Moulded Case Circuit Breakers and Their Application BU 1 Busways EL Instrument Transformers for Revenue Metering (125 kv BIL through 350 kv BIL) FG 1 - Fibreglass Cable Tray Systems FU 1 - Low-Voltage Cartridge Fuses LA 1 - Surge Arresters PB 1 - Panelboards PE 5 - Utility Type Battery Chargers RN1 - Polyvinyl-Chloride (PVC) Externally Coated Galvanized Rigid Steel Conduit and Intermediate Metal Conduit SG3 - Low-Voltage Power Circuit Breakers SG 4 - AC High-Voltage Circuit Breakers SG 6 - Power Switching Equipment TC 2 - Electrical Polyvinyl Chloride (PVC) Tubing and Conduit TC 3 - PVC Fittings for use with Rigid PVC Conduit and Tubing TC 9 - Fittings for PVC Plastic Utilities Duct for Underground Installation TC 14 - Reinforced Thermosetting Resin Conduit (RTRC) and Fittings TR 1 - Transformers, Regulators, and Reactors TR208 - Disconnect Switch Insulators VE 1 - Metallic Cable Tray Systems WC 26 Bi-national Wire and Cable Packaging Standard WC 70 - Nonshielded 0-2-kV Cables (ICEA S ) WD 1 - General Colour Requirements for Wiring Devices InterNational Electrical Testing Association (NETA) Page 101

103 ANSI/NETA ATS Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems National Fire Protection Association (NFPA) NFPA 70 National Electrical Code NFPA 72E - Automatic Fire Detectors NFPA 90A - Standard for the Installation of Air Conditioning and Ventilation Systems NFPA Life Safety Code NFPA 110 Standard for Emergency and Standby Power Supply Systems NFPA 130 Standard for Fixed Guideway Transit and Passenger Railway Systems NFPA 780 Standard for Lightning Protection Systems Underwriters Laboratories (UL) 5 - Surface Metal Raceways and Fittings 6 - Rigid Metal Conduit 44 Thermoset-Insulated Wires and Cables 50 - Enclosures for Electrical Equipment 62 Flexible Cord and Fixture Wire 67 - Panelboards 83 - Thermoplastic Insulated Wires and Cables Molded-Case Circuit Breakers, Molded Case Switches and Circuit-Breaker Enclosures Schedule 40 and 80 Rigid PVC Conduit Service Entrance Cables Wireways, Auxiliary Gutters, and Associated Fittings Emergency Lighting and Power Equipment Terminal Blocks Transient Voltage Surge Suppressors Page 102

104 Reference Standard for Electrical Wires, Cables, and Flexible Cords Uniform Building Code (UBC) Design Requirements Manual (DRM) GO Transit Independent Electricity System Operator (IESO) Standards Page 103

105 APPENDIX D: DEFINITIONS Autotransformer Apparatus in an electrification system which helps boost the catenary voltage and reduce the running rail current in the 2x25 kv autotransformer feed configuration. It uses a single winding having three terminals. The intermediate terminal, located at the midpoint of the winding, is connected to the rail and the static wires, and the other two terminals are connected to the catenary and the negative feeder wires, respectively. Catenary Mathematical term to describe the shape of a cable sagging under its uniformly distributed weight and used in railroad electrification to describe a system consisting of two or more conductors, hangers and in-span hardware of an overhead contact system, including supports. Circuit Breaker A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow. It can also be operated manually. Contact Wire An overhead wire with which the pantograph or other current collector is designed to make contact, also called trolley wire. Current Transformer A current transformer is a transformer designed to provide a current in its secondary coil proportional to the current flowing in its primary coil. Duct Bank A duct bank is an assembly of conduit or ducts, which is usually encased in concrete in a trench. It can be installed underground between structures or buildings to allow installation of power and communication cables. Duct banks allow replacement of damaged cables between buildings, or the addition of more power and communications circuits, without the expense of re-excavation of a trench. Page 104

106 Electrical Section This is the entire section of the OCS, which, during normal system operation, is powered from a TPS circuit breaker. The TPS feed section is demarcated by the phase breaks of the supplying TPS and by the phase breaks at the nearest SWS or line end. An electrical section may be subdivided into smaller elementary electrical sections. Elementary Electrical Section The smallest section of the OCS power distribution system that can be isolated from other sections or feeders of the system by means of disconnect switches and/or circuit breakers. Gantry Gantry is a metallic frame structure raised on side supports so as to span over or around something. In the context of TPSS, two gantries main gantry and strain gantry, are provided, one each at either side of electrified tracks at each TPF to connect the 25 kv feeders emanating from the TPF to the OCS. Generally, the main gantry is located on the TPF side of the tracks and the strain gantry on the opposite side. Both the gantries together support overhead cross-feeders which are connected to the OCS at one end and through disconnect switches to the TPF at the other. The gantries are much taller than the OCS support structures. Harmonics Distortion Voltage and current waveform distortion due to harmonics current generated by nonlinear equipment, such as thyristor-controlled equipment on-board the rolling stock or in the substations. Page 105

107 Hydro One HV Grid This is the high voltage (HV) 230 kv/115kv transmission network of Hydro One, the power utility. Load Break Disconnect Switches Disconnect switches that can be opened under normal electrical loads but not under fault current conditions. Magnahelic Gauge An instrument used for accurate measurement of air pressure. This is normally used in gas cylinders to measure teh pressure and determine teh right time to have teh cylinder refilled. Manhole In the context of TPSS a manhole is the top opening to an underground utility vault used to house an access point for making connections or performing maintenance on underground feeder cables routed in duct banks. Messenger Wire The wire from which the contact wire or auxiliary messenger is suspended by means or hangers in a catenary Negative Feeder Negative feeder is an overhead conductor supported on the same structure as the catenary conductors, which is at a voltage of 25 kv with respect to ground but 180 degrees out-ofphase with respect to the voltage on the catenary. Therefore, the voltage between the catenary conductors and the negative feeder is 50 kv nominal. The negative feeder connects successive feeding points, and is connected to one terminal of an autotransformer in the traction power facilities via a circuit breaker or disconnect switch. At these facilities, the other terminal of the autotransformer is connected to a catenary section or sections via circuit breakers or disconnects. Page 106

108 Overhead Contact System (OCS) The system that contains and supports the overhead Contract Wire for distributing power to the rail vehicles Paralleling Stations (PS) An installation that helps boost the OCS voltage and reduce the running rail return current by means of the autotransformer feed configuration. The negative feeders (NF) and the catenary conductors are connected to the two outer terminals of the autotransformer winding at this location with the central terminal connected to the rail return system. OCS sections can be connected in parallel at PS locations. Power Factor In ac systems power factor is defined as the ratio of the real power flowing to the load to the apparent power in the circuit. Rail Potential Rail Potential is defined as the voltage between running rails and ground occurring under operating conditions when the running rails are utilized for carrying the traction return current or under fault conditions. RAMS Reliability, availability, maintainability and safety analysis of the system (TPSS in this case) Regenerative Braking This is one way of applying brakes to electric trains to control their speed or to bring them to a halt. In the regenerative braking mode the traction motors of the rolling stock start working as generators; they generate electricity which can be used by the train itself for its internal auxiliary power use, or can be fed to the OCS for use of other trains in the same feed zone, or, if not fully used, can be burnt in electric resistors installed on the train. Refer to Clause 20.3 for additional details. SCADA System The Supervisory Control and Data Acquisition (SCADA) system is the master system that monitors and controls remote data input / output units of TES to and from the Operations Control Center (OCC). The SCADA system comprises master stations located Page 107

109 at the OCC and remote SCADA equipment located in the field. Communications between the master station and the remote SCADA equipment generally utilizes the Fibre Optic Communications Network (FOCN) and the appropriate communications protocol. The SCADA system transmits in real-time, metering data, indications, alarms, and controls, between trackside facilities / equipment and the OCC. These transmissions generally include: Metering information TES alarm and control signals and status indications TES related auxiliary and emergency power alarms and signals TES related fire detection system monitoring signals Refer to EPS for further details. Short Circuit Fault A low-resistance connection established by accident between two points in an electric circuit. The current tends to flow through the area of low resistance, bypassing the rest of the circuit till the power supply is cut off by operation of switchgear. Static Wire (Aerial Ground Wire) A wire, usually installed aerially adjacent to or above the catenary conductors and negative feeders, that connects OCS supports collectively to ground or to the grounded running rails to protect people and installations in case of an electrical fault. In an ac electrification system, the static wire forms a part of the traction power return circuit and is connected to the running rails at periodic intervals and to the traction power facility ground grids. If mounted aerially, the static wire may also be used to protect the OCS against lightning strikes. It is sometimes termed aerial ground wire. Page 108

110 Switchgear In an electric power system, switchgear is the combination of electrical disconnect switches, fuses and/or circuit breakers used to control, protect and isolate electrical equipment. Switchgear is used both to de-energize equipment to allow work to be done and to clear faults downstream. This type of equipment is important because it is directly linked to the reliability of the electricity supply Switching Stations (SWS) This is an installation where the supplies from two adjacent TPS are electrically separated and where electrical energy can be supplied to an adjacent, but normally separated electrical section during contingency power supply conditions. It also acts as a paralleling station (PS). Tests, Acceptance (Conformance) Those tests made to demonstrate compliance with the applicable standards. The test specimen is normally subjected to all planned production tests prior to initiation of the acceptance (conformance) test program. Tests, Design Those tests made to determine the adequacy of a particular type, style, or model of equipment with its component parts to meet its assigned ratings and to operate satisfactorily under normal service conditions or under special conditions if specified. Traction Electrification System (TES) TES is the combination of the traction power supply system (TPSS), the overhead contact system (OCS), and the traction power return system, together with appropriate interfaces to the TES related supervisory control and data acquisition (SCADA) system. It forms a fully functional 2x25-kV ac traction power supply and distribution system and provides the traction power to the electrically powered vehicles on the Metrolinx electrified railway line. Traction Power Facilities (TPF) TPF is a general term that encompasses traction substations (TPS), switching stations (SWS), and paralleling stations (PS). Page 109

111 Traction Power Return System All conductors including the grounding system for the electrified railway tracks, which form the intended path of the traction, return current from the wheel-sets of the traction rolling stock to the traction substations under normal operating conditions and the total return current under fault conditions. The conductors may be of the following types: 1. Running rails, 2. Impedance bonds, 3. Static wires, and buried ground or return conductors, 4. Rail and track bonds, 5. Return cables, including all return circuit bonding and grounding interconnections, 6. Ground, and 7. Because of the configuration of the autotransformer connections, the NF. Traction Power Substations (TPS) TPS is an electrical installation where power is received at high voltage and transformed to the voltage and characteristics required at the OCS for the nominal 2x25-kV system, containing equipment such as transformers, circuit breakers and sectionalizing switches. It also includes the incoming high voltage lines from the power supply utility. (TPSS) TPSS is the railway traction distribution network used to provide energy to Metrolinx electric trains, which comprises incoming high voltage supplies, traction power substations (TPS) at which power is converted from high voltage to nominal 2x25 kv railway traction voltage to the overhead contact system (OCS), other traction switching facilities including switching stations (SWS) and paralleling stations (PS), and connections to the OCS and the traction return and grounding system. Voltage Clearance It is the shortest distance through the air required between two conductive elements having a voltage difference, and depends upon the magnitude of voltage difference Page 110

112 between these two elements and also on atmospheric conditions (for example, pollution, humidity etc.). Voltage Flicker Voltage flicker is defined as change in voltage divided by the voltage, and is usually expressed in percent. Voltage Transformer (VT) A voltage transformer is a transformer that provides a voltage in its secondary coil proportional to voltage across its primary coil. It is designed to have an accurately known transformation ratio in both magnitude and phase, over a range of measuring circuit impedances. A voltage transformer is intended to present a negligible load to the supply being measured. The low secondary voltage allows protective relay equipment and measuring instruments to be operated at a lower voltage. Voltage Unbalance Voltage unbalance occurs when a three-phase system supplies a phase-to-phase load. Page 111

113 APPENDIX E: ABBREVIATIONS AND ACRONYMS AARU ac ANSI AREMA ASTM AT CFR CMU dc EMC EMI EMU EN HV Hz IBC IEEE ka km kph kv kva LV Automatic Assured Receptivity Unit Alternating Current American National Standards Institute American Railway Engineering and Maintenance-of-Way Association American Society for Testing Materials Autotransformer Code of Federal Regulations Concrete Masonry Unit Direct Current Electromagnetic Compatibility Electromagnetic Interference Electrical Multiple Unit European Standard High Voltage Hertz (cycles per second) International Building Code Institute of Electrical and Electronics Engineers kilo amperes Kilometres Kilometres per hour kilovolt kilowatt Low Voltage Page 112

114 m metre MIL Military mm millimetres MOD Motorized Disconnect Switch mph miles per hour MV Medium Voltage MVA Mega Volt Ampere N.C. Normally Closed N.O. Normally Open NEC National Electrical Code NEMA National Electrical Manufacturers Association NESC National Electrical Safety Code NF Negative Feeders NFPA National Fire Protection Association O&M Operations and Maintenance OBC Ontario Building Code ºC Degrees Centigrade OCC Operations Control Centre OCS Overhead Contact System OESC Ontario Electrical Safety Code OSHA Occupational Safety and Health Association PS Paralleling Stations PVC Polyvinyl Chloride RAM Reliability, Availability, Maintainability rms root mean square ROW Right of Way Page 113

115 RS RTRC RTU SCADA SWS TES TPF TPS TPSS UBC UL ULC UP Express WPC Rolling Stock Reinforced Thermosetting Resin Conduit Remote Terminal Unit Supervisory Control and Data Acquisition (System) Switching Stations Traction Electrification System Traction Power Facilities Traction Power Substations Uniform Building Code Underwriters Laboratories Underwriters Laboratories of Canada Union Pearson Express Wayside Power Control Cubicles Page 114