METHOD AND APPARATUS FOR PROCESSING POWER SYSTEM TOPOLOGY STRUCTURE INFORMATION

• US 20110106323A1
• Filed: 10/29/2010
• Published: 05/05/2011
• Est. Priority Date: 10/30/2009
• Status: Active Grant

• Current Assignee: Utopus Insights, Inc. (Vestas Wind Systems A/S)
• Original Assignee: International Business Machines Corporation
• Inventors: Jin, Feng, Lv, Hai Rong, Tian, Qi Ming, Dong, Jin, Yin, Wen Jun
• Granted Patent: US 8,615,330 B2
• Time in Patent Office: Days
• US Class Current: 700/286
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Abstract

A topology structure of a power system is acquired. At least one unification set in the power system is identified based on the topology structure. Devices belonging to the same unification set have the same outage state. The at least one unification set is recorded, so as to concurrently maintain devices belonging to the same unification set. Advantageously, one or more embodiments reduce number of outages caused by power system device maintenance.

Claims

1. A method for processing topology structure information of a power system, comprising:

acquiring the topology structure of the power system;

identifying at least one unification set in the power system based on the topology structure, wherein devices belonging to a same unification set have a same outage state; and

recording the at least one unification set so as to concurrently maintain devices belonging to the same unification set.

2. The method according to claim 1, wherein identifying at least one unification set in the power system comprises:

with any one of non-switch devices in the power system which have not been assigned to any unification set as a start of a new unification set, searching for devices connected to the non-switch device as devices in the new unification set, till all border devices of the new unification set are switch devices.

3. The method according to claim 2, wherein taking any one of non-switch devices in the power system which have not been assigned to any unification set as the start of the new unification set comprises:

taking a transformer device in the power system which has not been assigned to any unification set as the start.

4. The method according to claim 2, wherein taking any one of non-switch devices in the power system which have not been assigned to any unification set as the start of the new unification set comprises:

taking any one of bus devices in the power system which have not been assigned to any unification set as the start.

5. The method according to claim 2, wherein taking any one of non-switch devices in the power system which have not been assigned to any unification set as the start of the new unification set comprises:

taking any one of line devices in the power system which have not been assigned to any unification set as the start.

6. The method according to claim 1, wherein identifying at least one unification set in the power system comprises:

searching for non-switch devices directly connected to a switch device;

with any one of the found non-switch devices which have not been assigned to any unification set as a start of a new unification set, searching for devices connected to said any one of the found non-switch devices as devices in the new unification set, till all border devices of the new unification sets are switch devices.

7. The method according to claim 1, further comprising:

analyzing historical outage data so as to improve identification of unification sets.

8. The method according to claim 7, wherein analyzing historical outage data so as to improve identification of unification sets comprises:

if historical outage data shows that an outage state of a target device is independent from outage states of corresponding devices directly connected to the target device, taking the target device as a unification set.

9. The method according to claim 7, wherein analyzing historical outage data so as to improve identification of unification sets comprises:

identifying a power source unification set and a load unification set, which are in a power supply relation, based on historical outage data; and

if the historical outage data further shows that the power source unification set is a sole power supply of the load unification set, adding devices belonging to the load unification set into the power source unification set.

10. An apparatus for processing topology structure information of a power system, comprising:

an acquiring module configured to acquire the topology structure of the power system;

an identifying module configured to identify at least one unification set in the power system based on the topology structure, wherein devices belonging to a same unification set have a same outage state; and

a recording module configured to record the at least one unification set so as to concurrently maintain devices belonging to the same unification set.

11. The apparatus according to claim 10, wherein the identifying module comprises:

a module configured to search, with any one of non-switch devices in the power system which have not been assigned to any unification set as a start of a new unification set, for devices connected to the non-switch device as devices in the new unification set, till all border devices of the new unification set are switch devices.

12. The apparatus according to claim 11, wherein the non-switch device is a transformer device.

13. The apparatus according to claim 11, wherein the non-switch device is a bus device.

14. The apparatus according to claim 11, wherein the non-switch device is a line device.

15. The apparatus according to claim 10, wherein the identifying module comprises:

a module configured to search for non-switch devices directly connected to switch devices;

a module configured to search, with any one of the found non-switch devices which have not been assigned to any unification set as a start of a new unification set, for devices connected to said any one of the found non-switch devices as devices in the new unification set, till all border devices of the new unification sets are switch devices.

16. The apparatus according to claim 10, further comprising:

an analyzing and optimizing module configured to analyze historical outage data so as to improve identification of unification sets.

17. The apparatus according to claim 16, wherein the analyzing and optimizing module comprises:

a module configured to, if historical outage data shows that an outage state of a target device is independent from outage states of corresponding devices directly connected to the target device, take the target device as a unification set.

18. The apparatus according to claim 16, wherein the analyzing and optimizing module comprises:

a module configured to identify a power source unification set and a load unification set, which are in a power supply relation, based on historical outage data; and

a module configured to, if the historical outage data further shows that the power source unification set is a sole power supply of the load unification set, add devices belonging to the load unification set into the power source unification set.