Fiber Optics Current Sensor Free Standing Enabling smart grids and digital substations

Transcription

1 Fiber Optics Current Sensor Free Standing Enabling smart grids and digital substations

2 Content ABB Global Technology Leader ABB HV Products Portfolio Instrument Transformers ABB HV Products Portfolio Current Transformers Fiber Optics Current Sensor Free Standing Enabling digital substations and smart grids Product overview Customer benefits Design details Ratings and technical details System architectures variants Applicable Standards Summary Month DD, Year Slide 2

3 ABB A global technology leader ABB is a global leader in power and automation technologies that enable utility and industry customers to improve performance while lowering environmental impact. The ABB Group of companies operate in around 100 countries. Month DD, Year Slide 3

4 ABB PPHV product portfolio Instrument transformers ABB has been producing instrument transformers for more than 70 years. The main tasks of instrument transformers are: To transform currents or voltages from a usually high value to a value easy to handle for relays and instruments. To insulate the metering circuit from the primary high voltage system. To provide possibilities of standardizing the instruments and relays to a few rated currents and voltages. ABB offers: Current Transformers Voltage Transformers Combined Current/Voltage Transformers Station Service Voltage Transformers All instrument transformers supplied by ABB are tailormade to meet the needs of our customers. Month DD, Year Slide 4

5 ABB PPHV product portfolio Current transformers Conventional current transformers use the principle of electromagnetic induction to generate a small secondary current, typically 1 A or 5 A at rated primary current, which then serves as an input for protection relays or energy meters. ABB offers inductive current transformers for rated systems up to 800 kv, both: Oil insulated SF6 insulated ABB has also developed since 1990s optical current sensors, based on the Faraday effect principle, whereby light is used to deduce the precise magnitude of current that is creating the magnetic field. The latest generation of fiber optic current sensors has been adopted in the free-standing application, to cover the demand for non-conventional current transformers having digital output and suitable for current measurement applications in 245 kv to 800 kv substations. Month DD, Year Slide 5

6 Enabling digital substations and smart grids ABB s newly developed product family of Fiber Optics Current Sensor- Free Standing (FOCS-FS) offers significant improvements over conventional CTs and facilitates direct introduction of digital process bus in HV substations. This new design exceeds magnetic CT technology in: safety of operation current measurement and frequency response footprint/weight savings environmental friendliness. The fast response of FOCS and precise measurement of both ac and transient dc results in improved substation protection and monitoring functions. The digital interface of FOCS-FS is designed for IEC LE communication for integration into digital substation automation systems. Month DD, Year Slide 6

7 Product overview FOCS-FS is a free-standing 3-phase sensor system for 245 kv to 800 kv high voltage substations One system consists in: #3 HV columns, each one provided with one sensor head (SH), which contains two fiber coils in order to enable redundancy on the system level #1 outdoor kiosk equipped, for a redundant solution, with two opto-electronic (OE) modules Any opto-electronic module performs the following tasks: sends polarized light to the sensor receives the reflecting polarized light from the sensor compares in close-loop control the phase displacement in the polarized light in proportion to the magnetic field and the primary current converts the result into an optical IEC Ethernet output. Month DD, Year Slide 7

8 Customer benefits 1/2 Enabling smart grids and digital substations: Digital interface, designed for IEC LE communication for integration into digital substation automation systems. Plug & Play solution: Fully redundant system with hot swappable opto-electronics. Accurate: Meets key modern performance requirements for accuracy, in a wide temperature range. The design is inherently free of magnetic saturation, therefore suitable for capturing fast transient currents, short circuit currents, and alternating current (AC) with DC-offset. Reduced substation footprint: The compact design requires less space compared to traditional instrument transformers. Eco-efficient: Using no oil or SF6 gas FOCS is an eco-efficient solution. Reliable: Simple and robust design with self-diagnosis and alarm functions; different levels of redundancy available on request. Month DD, Year Slide 8

9 Customer benefits 2/2 Safe: As providing a low voltage digital output and filled with nitrogen gas at ambient pressure, FOCS has zero risk of electrocution and explosion. Compatible: Suitable for conventional Air Insulated Substation layouts. The adopted IEC LE protocol allows interoperability with other vendors equipment. Simplified engineering: Rated voltage and rated current are the only parameters that need to be specified. As a result, projects have simplified system engineering and are delivered faster. Additionally, the impact of late changes in specifications is negligible. Easy to install: FOCS is light-weight, compact and flexible with reduced installation costs. Deployment of fiber cables in the substation does not require splicing with dedicated fiber-optic equipment. The outdoor placement of the opto-electronics modules near the insulators reduces the length of sensor fiber cables to a minimum. Month DD, Year Slide 9

10 Design details Head: The same aluminum casting design covers all voltage ratings and all currents ratings. The design allows the installation of a second optical sensor head, in order to have an extended redundancy level for the system. Primary terminals: Interchangeable, as per customer specifications and applicable Standards. Possibility to have contactless application (no HV primary terminals). Contacts are aluminum cased and present two passthrough holes that allow periodical calibration (if requested) without necessity to disconnect the main contacts. Insulator: The design is based on hollow insulator technology. The whole product family utilizes the insulators of the same diameter. Basement: An aluminum casting basement is designed for the whole family products ( kv). Optical fibers are winded and segregated in the basement during transport and erection. Month DD, Year Slide 10

11 Ratings and technical details 1/2 Parameters [unit] FOCS-FS 245 FOCS-FS 420 FOCS-FS 550 FOCS-FS 800 System Voltage Rated frequency [Hz] 50 / 60 Highest voltage for equipment [kv r.m.s. ] Rated power-frequency withstand voltage [60 s] [kv r.m.s. ] Rated lightning impulse withstand voltage [1,2/50 µs] [kv peak ] Rated switching impulse withstand voltage [250/2500 µs] [kv peak ] Current ratings Rated primary current [A] Max continuous thermal current [A] 4800 Rated short circuit current (1 s / 3 s) [ka] 63 / 40 Rated dynamic current Insulator Material - Color Min nominal specific creepage distance (as per IEC table 6) [ka] mm/kv Min flashover distance mm Static withstand loads N Class II: 4000 Class II: 5000 Class II: 5000 Insulation fluid Filling absolute pressure Accuracy Protection accuracy Interfaces Digital output MPa 164 composite - grey 31 (Pollution level 4 - Very Heavy) N 2 ambient pressure IEC Class 5P, 5TPE IEEE 10% as per customer specifications Digital output (IEC LE) Optical ethernet cable: Duplex MM 62.5/125 with ST connector Optical 1PPS cable: Duplex (or Simplex) MM 62.5/125 with ST connector Month DD, Year Slide 11

12 Ratings and technical details 2/2 Parameters [unit] FOCS-FS 245 FOCS-FS 420 FOCS-FS 550 FOCS-FS 800 Options Redundancy of electronics Merging unit for VT signals Redundancy of power supply Environmental conditions Outdoor equipment operating temperature (shade) [ C] Relative humidity % Altitude above sea level [m] Air pollution [IEC 60815] Corrosive environment [ISO ] Solar radiation Ice load Seismic level Control cabinet degree of protection [IEC 60529] Dimensions and weights [W/m^2] mm g HV Column height (one phase) [mm] HV Column net weight (one phase) [kg] HV Column shipping weight (three phases in one box) [kg] HV Column shipping dimensions (three phases in one box) [mm] 1200 x 3100 x x 4600 x x 5500 x x 7500 x 1200 HV Column fixing points on pedestal #4 holes ø22 at 480 x 480 mm Control Cabinet dimensions (width x height x depth) [mm] 800 x 1000 x 300 (non redundant system) 1000 x 1200 x 300 (redundant system) Control Cabinet net weight Control Cabinet shipping dimensions Control Cabinet shipping weight [kg] [mm] [kg] Available on request Available on request Available on request [-40; +45] Very Heavy C3 C5 (Medium Very high) ,5 IP (non redundant opto-electronics with merging unit) 150 (redundant opto-electronics with merging units) 1200 x 1400 x 650 (non redundant system) 1000 x 1200 x 300 (redundant system) 165 (non redundant opto-electronics with merging unit) 210 (redundant opto-electronics with merging units) Month DD, Year Slide 12

13 System architecture variants The level of redundancy that can be specified is given by the number of opto-electronics units integrated in the system. Typically protection applications require a single redundant configuration, which consists of two opto-electronic units operating independently and in parallel. Other redundancy levels, for example non redundant (one optoelectronic unit) and double redundant (four opto-electronic units) are available. All solutions can be equipped on request with SAM600 standalone merging units, which digitalize analog signals coming from voltage transformers, synchronize those signals with the digital signal coming from FOCS and consolidate both signals into a digital output stream complying with IEC LE protocol. Month DD, Year Slide 13

14 System architecture variants 1/2 The level of redundancy that can be specified is given by the number of opto-electronics units integrated in the system. Typically protection applications require a single redundant configuration, which consists of two opto-electronic units operating independently and in parallel. Other redundancy levels, for example non redundant (one optoelectronic unit) and double redundant (four opto-electronic units) are available. All solutions can be equipped on request with SAM600 standalone merging units, which digitalize analog signals coming from voltage transformers, synchronize those signals with the digital signal coming from FOCS and consolidate both signals into a digital output stream complying with IEC LE protocol. Month DD, Year Slide 14

15 System architecture variants 2/2 Month DD, Year Slide 15

16 Applicable standards FOCS-FS current transformers are designed to comply with the following Standards: Standard Date Description IEC ( ) Electronic current transformers IEC ( ) Instrument transformer General requirements IEC ( ) Instrument transformer Additional requirements for current transformers IEC ( ) Composite hollow insulators IEC ( ) Communication networks and systems for power utility automation IEEE C57.13 (1993) Standard Requirements for Instrument Transformers IEEE C (2005) Standard for High-Accuracy Instrument Transformers FOCS-FS current transformers are manufactured in ABB s state-of-the-art facility located in Lodi (Italy). The facility is certified in accordance with the following Standards. Standard Date Description ISO 9001 (2008) Quality Management Systems ISO (2004) Environment Management Systems OSHAS (2007) Occupational Health and Safety Management Systems Month DD, Year Slide 16

17 Summary ABB s newly developed family of FOCS provides high voltage substations with improved protection and monitoring functions which deliver accurate and reliable digital signal outputs Month DD, Year Slide 17

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