Circuit Breaker LTB D with Motor Drive. Motor Drive. ABB PP/H/HV - Page 1. Ed

Transcription

1 Circuit Breaker LTB D with Motor Drive Motor Drive ABB PP/H/HV - Page 1 Ed

2 Technology Traditional technology Traditional spring operating mechanism: Closing mechanism ABB PP/H/HV - Page 2 Tripping mechanism

3 ABB PP/H/HV - Page 3 Motor Drive Technology Motor Drive technology Motor for opening and closing Control unit

4 Technology Motor Drive technology The next step of drive development Electronics are used to operate and control the circuit breaker Mechanical systems and springs are replaced by a motor and drive electronics. ABB PP/H/HV - Page 4 BLK MD The mechanical system is reduced to a minimum. Only one moving part in the operating mechanism.

5 Technology Motor Drive technology Motor for opening and closing Drive unit with energy storage ABB PP/H/HV - Page 5 Simple torsion tubes between the phases. (No adjustments needed) Control cubicle

6 ABB PP/H/HV - Page 6 Motor Drive Function Function A digitally controlled motor directly moving the circuit breaker contacts

7 Function Motor Drive system demonstration Converter Unit Capacitor Unit Charging Unit AC DC CLOSED ABB PP/H/HV - Page 7 mm msec Motor Resolver OPEN Breaker Contact Travel Control Unit LOW POWER FLOW HIGH POWER FLOW CONTROL SIGNALS MEASURMENT SIGNALS STATUS SIGNALS I/O Unit I O <<TRIP

8 Technology Spring drive vs. Motor Drive, Main differences Spring drive, BLK Motor Drive Energy storage Trip and close springs Capacitors Latching Latches and coils Not needed due to construction Contact travel Pre adjusted Active control Damping system Mechanical oil dampers Motor * Mechanical system Single-pole operated configuration Interlocking Arms and links transmits the force between the poles 3 BLK with cubicles 1 Central cubicle Electro mechanical Torsion tube system with few parts 3 Motors 1 Control cubicle Logical functions, programmable ABB PP/H/HV - Page 8 Self supervision No Yes, all parts of the drive are continuously checked Auxiliary contacts Mechanical Relays (solid state) * Energy is fed back to the capacitors during retardation

9 Configuration LTB D with Motor Drive Available for: LTB D kv Single and three pole operated WCB applications DCB under development MD150: Single-pole operation MD300: Three-pole operation ABB PP/H/HV - Page 9 WCB = Withdrawable Circuit Breaker DCB = Disconnecting Circuit Breaker

10 Configuration Three-pole operated LTB D with MD300 Configuration: Pole beam Phase distance: mm Design: Torsion tubes between phases Motor capable of 750 Nm (Standard car app. 200 Nm) ABB PP/H/HV - Page 10 Gas monitor and position of CB easily read from the same side of the breaker

11 Configuration Single pole operated LTB D with MD150 Configuration: Pole beam or single stands Design: One motor at each phase Position indicator at each phase Motors capable of 250 Nm ABB PP/H/HV - Page 11 Only one cubicle Easy connection to the motors

12 Advantages Technical advantages The aim of reduction of mechanical problems and service requirements during the development has resulted in: Optimized active controlled contact movement Continuous supervision of the system ABB PP/H/HV - Page 12 Benefits: Easy installation Minimized maintenance No lubrication needed Eventual faults can be detected before the breaker needs to be operated Integrated Condition Monitoring

13 Supervision Drive diagnostics, Micro motion Diagnostic function that performs status checks of the complete breaker while in service. Minimal contact movement are performed at preset time intervals and checks the status of: Electronic modules Internal cabling Motor Mechanical system Contact Position Closed Open Approx. 0.5 mm Contact separation Time (ms) ABB PP/H/HV - Page 13 Unique in-service status check of breaker and drive Improves reliability significantly

14 Supervision Drive diagnostics Traditional drive Motor Drive On-line diagnostics of the drive improves the availability. Makes sure that the circuit breaker is ready for operation when its needed. Status check is performed continuously when the drive is energized. ABB PP/H/HV - Page 14 Availability of the breaker increased by self supervision

15 Supervision (Motor Drive) MD Service MD Service software makes it possible to connect to the drive and get support during installation and service Operation counter Breaker position Operation mode Micromotion counter Breaker info. Alarm/Warning Indication ABB PP/H/HV - Page 15 Energy level Supply voltage status SF 6 Data Download of data enables distance diagnostics Easy customization of breaker function System data: Voltage, temp. Interlock information

16 ABB PP/H/HV - Page 16 Motor Drive Supervision MD Service, connection kit MD Service requires a connection kit between the drive and the computer Converter RS232 optical / electrical Optical fiber

17 References Commercial Installations Fyns Net, Denmark Substation Kingstrup LTB 170D1/B with Motor Drive for 1-pole operation Installed July, 2002 Application: 150 kv line ABB PP/H/HV - Page 17 Sydkraft Sweden Vaple, Granlo, Korsta, and Söderåsen transformer substations LTB 145D1/B with Motor Drive for 1-pole operation Installed 2001, 2002 and 2003 Application: 130 kv capacitor bank

18 References Commercial Installations VB Elnät, Sweden Substation Flatenberg LTB 145D1/B with Motor Drive for 3-pole op. Installed July, 2004 Application: 130 kv line Flexible position for Control Cubicle ABB PP/H/HV - Page 18 Pan American Energy, Patagonia, Argentina LTB 145D1/B WCB, indoor version Installed 2005

19 References References Commercial deliveries of LTB D with MD since ABB PP/H/HV - Page Test breakers Over 100 installations 17 different countries (-2005)

20 Technology Motor Drive summary Digitally controlled motor, directly moving the circuit breaker contacts Only one moving part Low mechanical stresses Integrated condition monitoring At present available for: LTB D kv WCB LTB kv Single- or three-pole operation ABB PP/H/HV - Page 20 Benefits: Highest reliability Long mechanical life Ideally suited for high operating frequency Very low audible noise

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22 Circuit Breaker LTB D with Motor Drive Motor Drive Part II Detailed description ABB PP/H/HV - Page 22 Ed

23 Control Cubicle Control cubicle Terminal blocks for connections of the control cables. Local control panel ABB PP/H/HV - Page 23 Drive unit (MD electronics cubicle)

24 Mechanics Link gear The lower end of the breaker poles contain a link gear that transforms rotating movement into linear movement of the moving contact. 160 degree movement, (-5 to 155) Two gas valves per housing. Integrated housing for position indicator Integrated fastening flange for the motor ABB PP/H/HV - Page 24 Two X-rings at each side of the shaft provide a good dynamical sealing system. Simple self latching design Few parts No adjustments needed

25 Modules Motor, technical data Data: Manufacturer: ABB Degree of protection, IP: 65 Temperature range -50º to +85ºC Rated voltage: 565 V rms Rated speed: 1000 rpm Single-pole operated Peak torque: Weight: 250 Nm 28 kg ABB PP/H/HV - Page 25 Three-pole operated Peak torque: Weight: 750 Nm 67 kg

26 Modules Control cubicle: Drive unit, overview The drive unit contains all electronics that controls the motion of the Circuit Breaker contact. EMC housing Charger unit Control unit (I/O boards and control board) Converters ABB PP/H/HV - Page 26 Capacitor unit Connections to the motors

27 Modules Drive unit: Capacitor unit, overview The capacitor unit is the storage facility of the energy needed to operate the circuit breaker ABB PP/H/HV - Page 27 Insulated busbar 12 electrolytic capacitors Two groups connected in series each consisting of 6 capacitors connected in parallell Well proven design of capacitors At service discharge of the energy can be made trough the motor(s) or built in discharge resistors.

28 Verification Verification of technology Extensive testing has been performed to verify the technology and design. Some of the performed tests are: Alternative drive for BLK 222 according to IEC T100s Single- and three-pole operated Mechanical endurance three-pole operated, 10,000 Mechanical endurance single-pole operated, 10,000 EMC tests, emission and radiation High / Low temp, -50 / +70 C Modular tests of electronics: Vibration Humidity and dry heat ABB PP/H/HV - Page 28 Extended mechanical endurance test: 50,000 operations without maintenance of the drive

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