FEEDER AUTOMATION SYSTEM AND METHOD FOR OPERATING THE SAME

• US 20110115308A1
• Filed: 07/21/2008
• Published: 05/19/2011
• Est. Priority Date: 07/21/2008
• Status: Abandoned Application

• Current Assignee: ABB Research Ltd. (ABB Limited)
• Original Assignee: ABB Research Ltd. (ABB Limited)
• Inventors: Ma, Wenxiao, Wang, Gang, Wang, Zhao, Jing, Lei
• Application Number:
  US13/003,134
• Publication Number:
  US 20110115308A1
• Time in Patent Office: Days
• US Class Current: 307/125
• CPC Class Codes: H02H 3/063 Details concerning the co-operation of many similar arrangements, e.g. in a network sectionalised protection H02H7/26
• CPC Class Codes: H02H 7/263 involving transmissions of measured values comparison of currents or voltages using pilot wires H02H3/30
• CPC Class Codes: H02H 7/266 involving switching on a spare supply in general H02J9/00
• CPC Class Codes: H02J 13/00016 using a wired telecommunication network or a data transmission bus
• CPC Class Codes: H02J 13/00028 involving the use of Internet protocols
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 13/0004 involved in a protection system
• CPC Class Codes: H02J 3/0073 for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/20 using protection elements, arrangements or systems
• CPC Class Codes: Y04S 10/52 Outage or fault management, e.g. fault detection or location
• CPC Class Codes: Y04S 40/124 using wired telecommunication networks or data transmission busses

Abstract

A feeder automation system and a method for operating the feeder automation system are disclosed. The feeder automation system comprises a first domain comprising a first slave station; a second domain comprising a second slave station; and a tie-switch provided between the first domain and the second domain. The first slave station is adapted to operate the tie-switch directly, and the second slave station is adapted to operate the tie-switch through the first slave station. When a fault occurs in the system, the first slave station and the second slave station cooperate with each other to perform fault detection, fault isolation, and fault restoration etc. without interacting with a master station.

Claims

1. A feeder automation system comprising:

a first domain comprising a first slave station;

a second domain comprising a second slave station; and

a tie-switch provided between the first domain and the second domain;

wherein the first slave station is adapted to operate the tie-switch directly, and the second slave station is adapted to operate the tie-switch through the first slave station.

2. The feeder automation system of claim 1, wherein the tie-switch is configured as a real tie-switch in the first slave station, and as a virtual tie-switch in the second slave station.

3. The feeder automation system of claim 1, wherein the first slave station comprises a configuration of the first domain, and the second slave station comprises a configuration of the second domain.

4. The feeder automation system of claim 1, wherein the first slave station comprises means for supervising and operating the first domain, and the second slave station comprises means for supervising and operating the second domain.

5. The feeder automation system of claim 1, further comprising:

a master station in communication with the first slave station and the second slave station.

6. The feeder automation system of claim 1, wherein the first domain comprises a first terminal device in communication with the first slave station, and the second domain comprises a second terminal device in communication with the second slave station.

19. The feeder automation system of claim 2, wherein the first slave station comprises a configuration of the first domain, and the second slave station comprises a configuration of the second domain, and the first slave station comprises means for supervising and operating the first domain, and the second slave station comprises means for supervising and operating the second domain.

20. The feeder automation system of claim 19, further comprising:

a master station in communication with the first slave station and the second slave station, wherein the first domain comprises a first terminal device in communication with the first slave station, and the second domain comprises a second terminal device in communication with the second slave station.

7. A method for operating a feeder automation system, wherein the feeder automation system includes a first domain provided with a first slave station;

a second domain provided with a second slave station; and

a tie-switch provided between the first domain and the second domain, wherein the first slave station is adapted to operate the tie-switch directly, and the second slave station is adapted to operate the tie-switch through the first slave station;

the method comprising;

detecting, by the first slave station, a fault in the first domain;

determining, by the first slave station, a location of the fault in the first domain;

isolating, by the first slave station, the location of the fault in the first domain; and

restoring, by the first slave station, a power supply to the first domain.

8. The method of claim 7, wherein the restoring the power supply to the first domain further comprises:

searching, by the first slave station in the first domain, an available route to a connectivity node that is to be restored with the power supply comprising the tie-switch;

sending, by the first slave station, a request to the second slave station to inquire if there is an available route to the tie-switch in the second domain;

receiving, by the first slave station, a response from the second slave station indicating that there is an available route to the tie-switch in the second domain; and

closing, by the first slave station, the tie-switch.

9. The method of claim 8, wherein the response comprises information of load capacity of the route in the second domain, and prior to closing the tie-switch, the method further comprises determining, by the first slave station, whether the load capacity of the route in the second domain matches a requirement of the connectivity node.

10. The method of claim 7, wherein the first slave station regularly reports, to the second slave station, a state of the tie-switch and a first energization state of the feeder in the first domain connected to the tie-switch, and the second slave station regularly reports a second energization state of the feeder in the second domain connected to the tie-switch to the first slave station.

11. The method of claim 7, further comprising:

prior to detecting the fault,

receiving, by the first slave station, first information from a first feeder terminal unit in the first domain; and

receiving, by the second slave station, second information from a second feeder terminal unit in the second domain.

12. The method of claim 11, wherein the first information received by the first slave station comprises a first current and a first voltage of a first feeder and a first state of a first switch supervised by the feeder terminal unit in the first domain, and the second information received by the second slave station comprises a second current and a second voltage of a second feeder and a second state of a second switch supervised by the feeder terminal unit in the second domain.

13. A method for operating a feeder automation system, wherein the feeder automation system includes a first domain provided with a first slave station;

a second domain provided with a second slave station; and

a tie-switch provided between the first domain and the second domain, wherein the first slave station is adapted to operate the tie-switch directly, and the second slave station is adapted to operate the tie-switch through the first slave station;

the method comprising;

detecting, by the second slave station, a fault in the second domain;

determining, by the second slave station, a location of the fault in the second domain;

isolating, by the second slave station, the location of the fault in the second domain; and

restoring, by the second slave station, power to the second domain.

14. The method of claim 13, wherein the restoring the power to the second domain further comprises:

searching, by the second slave station in the second domain, an available route to a connectivity node that is to be restored with the power comprising the tie-switch;

sending, by the second slave station, an inquiry request to the first slave station to inquire if there is an available route to the tie-switch in the first domain;

receiving, by the second slave station, a response from the first slave station indicating that there is an available route to the tie-switch in the first domain;

sending, by the second slave station, an operation request to the first slave station to close the tie-switch; and

receiving, by the second slave station, a report of closing the tie-switch from the first slave station.

15. The method of claim 14, wherein the response comprises information of a load capacity of the route in the first domain, and prior to sending the operation request to the first slave station to close the tie-switch, the method further comprises determining, by the second slave station, whether the load capacity of the route in the first domain matches a requirement of the connectivity node.

16. The method of claim 15, wherein the first slave station regularly reports, to the second slave station, a state of the tie-switch and a first energization state of the feeder in the first domain connected to the tie-switch, and the second slave station regularly reports a second energization state of the feeder in the second domain connected to the tie-switch to the first slave station.

17. The method of claim 15, further comprising:

prior to detecting the fault,

receiving, by the first slave station, first information from a first feeder terminal unit in the first domain; and

receiving, by the second slave station, second information from a second feeder terminal unit in the second domain.

18. The method of claim 17, wherein the first information received by the first slave station comprises a first current and a first voltage of a first feeder and a first state of a first switch supervised by the feeder terminal unit in the first domain, and the second information received by the second slave station comprises a second current and a second voltage of a second feeder and a second state of a second switch supervised by the feeder terminal unit in the second domain.