Systems and methods for managing a power distribution system

• US 9,502,898 B2
• Filed: 02/01/2012
• Issued: 11/22/2016
• Est. Priority Date: 02/01/2012
• Status: Active Grant

• Current Assignee: GE Digital Holdings LLC (GE Aerospace)
• Original Assignee: General Electric Company
• Inventors: Arvind, Kamal Kumar, Meadows, Vernon, Losee, Marc Karl
• Primary Examiner(s): KASENGE, CHARLES R
• Application Number:
  US13/363,810
• Publication Number:
  US 20130197702A1
• Time in Patent Office: 1,756 Days
• Field of Search: 700/22, 700/286, 700/295
• US Class Current: 1/1
• CPC Class Codes: H02J 3/001 Methods to deal with contingencies, e.g. abnormalities, faults or failures
• CPC Class Codes: H02J 3/007 Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing uninterruptable power supply H02J9/00
• CPC Class Codes: H02J 3/0073 for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars

Abstract

A system and method of determining priorities for restoration of power in a power distribution system includes collecting customer prioritization data for a set of customers. An inconvenience factor is determined from the customer prioritization data for each customer. A zone restoration factor is then determined from the inconvenience factor for each customer. The inconvenience factor takes into account the estimated outage time, the customer'"'"'s back-up time, the willingness of the customer to use back-up devices, and customer'"'"'s priority for the estimated outage time.

Claims

1. A power distribution system, comprising:

a processor;

a memory comprising computer-executable instructions that, when executed by the processor, cause the processor to;

determine an outage time;

determine a plurality of effective interruption times associated with a set of customers, wherein each of the plurality of effective interruption times is based on;

the outage time; and

a back-up time associated with a respective one of the set of customers, wherein the back-up time is based on a time for which a back-up device of the respective one of the set of customers can operate;

determine an inconvenience factor associated with each of the set of customers, wherein each of the inconvenience factors is based on;

one of the plurality of effective interruption times associated with one of the set of customers; and

one of a plurality of priority factors associated with the one of the set of customers, wherein each of the plurality of priority factors is associated with a respective one of the set of customers and indicates a priority for restoring power to the one of the set of customers; and

determine a subset of the set of customers to isolate in order to restore power to the set of customers, wherein the subset of the set of customers is determined based on the inconvenience factors.

2. The power distribution system of claim 1, wherein each of the inconvenience factors is determined based on scaling the one of the effective interruption times with the one of the plurality of priority factors.

3. The power distribution system of claim 1, the memory comprising computer-executable instructions that, when executed by the processor, cause the processor to:

determine an amount of a load to be reduced for restoration and determine a load demand associated with each of the set of customers.

4. The power distribution system of claim 3, wherein the subset of the set of customers to isolate is determined based on the load to be reduced for restoration and the load demand associated with each of the set of customers.

5. The power distribution system of claim 1, wherein each of the effective interruption times is further based on a willingness factor, wherein each willingness factor represents how willing a respective one of the set of customers is to use a back-up device.

6. The power distribution system of claim 5, wherein each of the willingness factors scales the back-up time associated with a respective one of the set of customers.

7. The power distribution system of claim 1, wherein each of the plurality of effective interruption times is based on a difference between:

the outage time; and

the back-up time associated with a respective one of the set of customers.

8. The power distribution system of claim 1, the memory comprising computer-executable instructions that, when executed by the processor, cause the processor to:

determine zone factors associated with a plurality of zones, wherein a subset of the set of customers is associated with a respective one of the plurality of zones, wherein each of the zone factors is based on the inconvenience factors associated with a respective subset of the set of customers; and

determine a subset of the plurality of zones to isolate in order to restore power to the zones, wherein the subset of the plurality of zones is determined based on the zone factors.

9. The power distribution system of claim 8, wherein each of the zone factors is a sum of inconvenience factors associated with the subset of the set of customers associated with the respective one of the plurality of zones.

10. The power distribution system of claim 9, wherein each of the inconvenience factors is determined based on scaling the one of the plurality of effective interruption times associated with one of the set of customers with the one of the priority factors associated with the one of the set of customers.

11. The power distribution system of claim 8, the memory comprising computer-executable instructions that, when executed by the processor, cause the processor to:

determine an amount of load to be reduced to restore power to the zones and determine a load demand associated with each of the plurality of zones.

12. The power distribution system of claim 11, wherein the subset of the plurality of zones to isolate is determined based on the amount of load to be reduced to restore power to the zones and the load demand associated with each of the plurality of zones.

13. The power distribution system of claim 8, wherein each of the plurality of effective interruption times is further based on a willingness factor, wherein each willingness factor represents how willing a respective one of the set of customers is to use a back-up device.

14. The power distribution system of claim 13, wherein each of the willingness factors scales the back-up time associated with a respective one of the set of customers.

15. The power distribution system of claim 8, wherein each of the plurality of effective interruption times is based on a difference between:

the outage time; and

the back-up time associated with a respective one of the set of customers.

16. The power distribution system of claim 8, wherein at least one of the plurality of zones is served by a feeder line.

17. The power distribution system of claim 8, wherein at least one of the plurality of zones is defined by a set of customers located between two switches in a network.

18. The power distribution system of claim 1, wherein determining the subset of the set of customers to isolate in order to restore power to the set of customers includes determining a subset of a plurality of zones to isolate in order to restore power to the zones.

24. The non-transitory computer readable medium of claim 13, wherein each of the willingness factors scales the back-up time associated with a respective one of the set of customers.

19. A non-transitory computer readable medium, comprising instructions that, when executed by a processor, cause the processor to:

determine an outage time;

determine a plurality of effective interruption times associated with a set of customers, wherein each of the plurality of effective interruption times is based on;

the outage time; and

a back-up time associated with a respective one of the set of customers, wherein the back-up time is a time for which a back-up device of the respective one of the set of customers can operate;

determine an inconvenience factor associated with each of the set of customers, wherein each of the inconvenience factors is based on;

one of the plurality of effective interruption times associated with one of the set of customers; and

one of a plurality of priority factors associated with the one of the set of customers, wherein each of the plurality of priority factors is associated with a respective one of the set of customers and indicates a priority for restoring power to the one of the set of customers; and

determine a subset of the set of customers to isolate in order to restore power to the set of customers, wherein the subset of the set of customers is determined based on the inconvenience factors.

20. The non-transitory computer readable medium of claim 19, wherein each of the inconvenience factors is determined based on scaling the one of the effective interruption times with the one of the plurality of priority factors.

21. The non-transitory computer readable medium of claim 19, comprising instructions that, when executed by the processor, cause the processor to:

determine an amount of a load to be reduced for restoration and determine a load demand associated with each of the set of customers.

22. The non-transitory computer readable medium of claim 21, wherein the subset of the set of customers to isolate is determined based on the load to be reduced for restoration and the load demand associated with each of the set of customers.

23. The non-transitory computer readable medium of claim 19, wherein each of the effective interruption times is further based on a willingness factor, wherein each willingness factor represents how willing a respective one of the set of customers is to use a back-up device.

25. The non-transitory computer readable medium of claim 19, wherein each of the plurality of effective interruption times is based on a difference between:

the outage time; and

the back-up time associated with a respective one of the set of customers.

26. The non-transitory computer readable medium of claim 19, comprising computer-executable instructions that, when executed by the processor, cause the processor to:

determine zone factors associated with a plurality of zones, wherein a subset of the set of customers is associated with a respective one of the plurality of zones, wherein each of the zone factors is based on the inconvenience factors associated with a respective subset of the set of customers; and

determine a subset of the plurality of zones to isolate in order to restore power to the zones, wherein the subset of the plurality of zones is determined based on the zone factors.

27. The non-transitory computer readable medium of claim 26, wherein each of the zone factors is a sum of inconvenience factors associated with the subset of the set of customers associated with the respective one of the plurality of zones.

28. The non-transitory computer readable medium of claim 27, wherein each of the inconvenience factors is determined based on scaling the one of the plurality of effective interruption times associated with one of the set of customers with the one of the priority factors associated with the one of the set of customers.

29. The non-transitory computer readable medium of claim 26, comprising computer-executable instructions that, when executed by the processor, cause the processor to:

determine an amount of load to be reduced to restore power to the zones and determine a load demand associated with each of the plurality of zones.

30. The non-transitory computer readable medium of claim 29, wherein the subset of the plurality of zones to isolate is determined based on the amount of load to be reduced to restore power to the zones and the load demand associated with each of the plurality of zones.

31. The non-transitory computer readable medium of claim 26, wherein each of the plurality of effective interruption times is further based on a willingness factor, wherein each willingness factor represents how willing a respective one of the set of customers is to use a back-up device.

32. The non-transitory computer readable medium of claim 31, wherein each of the willingness factors scales the back-up time associated with a respective one of the set of customers.

33. The non-transitory computer readable medium of claim 26, wherein each of the plurality of effective interruption times is based on a difference between:

the outage time; and

the back-up time associated with a respective one of the set of customers.

34. The non-transitory computer readable medium of claim 26, wherein at least one of the plurality of zones is served by a feeder line.

35. The non-transitory computer readable medium of claim 26, wherein at least one of the plurality of zones is defined by a set of customers located between two switches in a network.

36. The non-transitory computer readable medium of claim 19, wherein determining the subset of the set of customers to isolate in order to restore power to the set of customers includes determining a subset of a plurality of zones to isolate in order to restore power to the zones.