METHOD AND APPARATUS FOR MANAGING TRANSMISSION OF POWER IN A POWER TRANSMISSION NETWORK

• US 20120326503A1
• Filed: 07/31/2009
• Published: 12/27/2012
• Est. Priority Date: 07/31/2009
• Status: Abandoned Application

• Current Assignee: GridManager A/S
• Original Assignee: GridManager A/S
• Inventors: Birkelund, Mogens
• Application Number:
  US13/388,274
• Publication Number:
  US 20120326503A1
• Time in Patent Office: Days
• US Class Current: 307/24
• CPC Class Codes: G06Q 10/04 Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" market predictions or forecasting for commercial activities G06Q30/0202
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 13/00002 characterised by monitoring
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 2310/60 Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02J 3/003 Load forecast, e.g. methods or systems for forecasting future load demand
• CPC Class Codes: H02J 3/144 Demand-response operation of the power transmission or distribution network
• 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 10/30 State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
• CPC Class Codes: Y04S 10/50 Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
• 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 method of managing transmission of power in a power transmission network, said power transmission network comprises: at least one power producer, a utility grid comprising power transmissions lines and substations, a plurality of power consumers consuming power produced by said at least one power producer, said method comprising the steps of: establishing a plurality of individual power consumer characteristics providing information of at least a part of said plurality of power consumers, by means of a central control arrangement matching said plurality of individual power consumer characteristics to establish one or more consumer groups of power consumers based on said matching, said established one or more consumer groups having a consumer group characteristic reflecting the expected consumer characteristic of said one or more consumer groups, and by means of said central control arrangement over time monitoring the power consumed by said one or more consumer groups to validate whether the power consumed applies with said consumer group characteristic.

Claims

1. A method of managing transmission of power in a power transmission network (TN), said power transmission network (TN) comprises:

at least one power producer (PP),

a utility grid (UG) comprising power transmissions lines (PTL) and substations (SUB),

a plurality of power consumers (PC) consuming power produced by said at least one power producer (PP),

said method comprising the steps of;

establishing a plurality of individual power consumer characteristics (PCC) providing information of at least a part of said plurality of power consumers (PC),

by means of a central control arrangement (CCA) matching said plurality of individual power consumer characteristics (PCC) to establish one or more consumer groups (CG) of power consumers (PC) based on said matching,

said established one or more consumer groups (CG) having a consumer group characteristic reflecting the expected consumer characteristic of said one or more consumer groups (CG), and

by means of said central control arrangement (CCA) over time monitoring the power consumed by said one or more consumer groups (CG) to validate whether the power consumed applies with said consumer group characteristic.

2. A method according to claim 1, comprising dynamically adapting the power consumed by said one or more consumer groups (CG) based on the result of said monitoring of the consumed power so that the consumed power matches with said consumer group characteristic.

3. A method according to claim 2, wherein said adaption comprises controlling one or more electrical power consuming units at one or more power consumers (PC) in said one or more consumer groups (CG) by means of said central control arrangement (CCA).

4. A method according to claim 2 or 3, wherein said adaption comprises controlling the power produced by one or more of said power producers (PP) producing power supplied to said one or more consumer groups (CG).

5. A method according to claim 4, wherein said adaption of the power produced comprises controlling the power produced by one or more power producers (PP) by means of said central control arrangement (CCA).

6. A method according to claim 5, wherein said one or more power producers (PP) being controlled by means of said central control arrangement (CCA) are one or more central power producers (CPP).

7. A method according to claim 5 or 6, wherein said power producers (PP) being controlled by means of said central control arrangement (CCA) are one or more decentralized power producers (DPP).

8. A method according to claim 5, 6 or 7, wherein said control of one or more central power producers (CPP) comprises by means of said central control arrangement (CCA) transmitting one or more requests for regulation of the power produced by said central power plant (CPP), and

wherein said control of one or more decentralized power producers (DPP) comprises by means of said central control arrangement (CCA) regulating the power produced by said one or more decentralized power producers (DPP).

9. A method according to any of the preceding claims, wherein said individual power consumer characteristic (PCC) comprises information regarding the expected power consumption within a predetermined time span (t0-tn) of individual power consumers (PC) in said established consumer group (CG),

wherein the consumer group characteristic of an established consumer group (CG) comprises at least one prognosis of the expected power consumption of said consumer group (CG), and

wherein said at least one prognosis of the expected power consumption of said consumer group (CG) is established by means of said central control arrangement (CCA) before said power consumption is expected to take place.

10. A method according to claim 9, wherein said at least one established prognosis of the expected power consumption of said consumer group (CG) is updated at least one time before the power consumption is expected to take place.

11. A method according to claim 9 or 10, wherein said central control arrangement (CCA) communicates said at least one prognosis of the expected power consumption of said consumer group (CG) to one or more of said power producers (PP).

12. A method according to any of the preceding claims, wherein said plurality of individual power consumer characteristics (PCC) comprises power consumer demands, and

wherein said one or more consumer groups (CG) are established based on similar power consumer demands to achieve one or more consumer groups (CG) comprising a consumer group characteristic reflecting one or more similar power consumer demands of the power consumers (PC) in said consumer group (CG).

13. A method according to any of the preceding claims, wherein said plurality of individual power consumer characteristics (PCC) comprises power consumption abilities of said power consumers (PC), and

wherein said one or more consumer groups (CG) are established based on similar power consumption abilities to achieve one or more consumer groups (CG) comprising a consumer group characteristic reflecting one or more similar power consumer abilities of the power consumers (PC) in said consumer group (CG).

14. A method according to any of the preceding claims, wherein said power consumer characteristics (PCC) comprises a plurality of power consumer parameters (PCP).

15. A method according to claim 14, wherein one or more settings of at least one of said power consumer parameters (PCP) are continuously monitored by said central control arrangement (CCA) over time.

16. A method according to any of the preceding claims, wherein said power consumer characteristics (PCC) comprises power cost demands, and

wherein said one or more consumer groups (CG) are established based on similar power cost demands to achieve one or more consumer groups (CG) comprising a consumer group characteristic reflecting one or more similar power cost demands of the power consumers (PC) in said consumer group (CG).

17. A method according to any of the preceding claims, wherein said power consumer characteristics (PCC) comprises power type demands, and

wherein said one or more consumer groups (CG) are established based on similar power type demands to achieve one or more consumer groups (CG) comprising a consumer group characteristic reflecting one or more similar power type demands of the power consumers (PC) in said consumer group (CG).

18. A method according to any of the preceding claims, wherein said one or more power consumer characteristics (PCC) comprises one or more time limits and/or time span for fulfilling one or more power consuming tasks controllable by said central control arrangement (CCA), and

wherein said central control arrangement (CCA) makes sure that said one or more time span for fulfilling said one or more power consuming tasks controllable by said central control arrangement (CCA) are complied with.

19. A method according to any of the preceding claims, said method further comprising:

establishing power producer characteristics (PPC) providing information of said at least one power producer (PP),

by means of said central control arrangement (CCA) dynamically establishing a cluster (C) of at least one power producer (PP) and one or more of said consumer groups (CU) by matching said power producer characteristics (PPC) and said consumer group characteristics.

20. A method according to claim 19, wherein said central control arrangement (CCA) establishes a plurality of local clusters (C) dependent on their location in the utility grid (UG), and

wherein each of said local clusters (C) comprises one or more consumer groups (CG) with expected local power consumption that matches the expected local power production of said one or more power consumers (PP) in each of said plurality of local clusters (C) to minimize power loss in the utility grid (UG) due to increased transportation of power in the utility grid (UG) caused by local overproduction of power.

21. A method according to claim 19 or 20, wherein said central control arrangement (CCA) over time controls the power produced by said power producers (PP) in said local clusters (C) so that said expected local power consumption matches the expected local power production of said one or more power consumers (PP) in each of said plurality of local clusters (C).

22. A method according to any of the claims 19-21, wherein said central control, arrangement (CCA) over time controls the power consumed by one or more said power consumers (PC) of the one or more consumer groups (C) in said local clusters (C) so that said expected local power consumption matches the expected local power production of said one or more power consumers (PP) in each of said plurality of local clusters (C).

23. A method according to any of claims 19-22, wherein said expected local power consumption matches the expected local power production when the expected local power production is a predetermined percentage above the expected local power consumption.

24. A method according to claim 23, wherein said predetermined percentage corresponds to a local production of power of at least 1% above the expected local power consumption

25. A method according to any of the claims 19 to 24, wherein said one or more power producer characteristics (PPC) comprises one or more time limits and/or time span for fulfilling one or more power consuming tasks defined by said power producer (PP), and

wherein said central control arrangement (CCA) makes sure that said one or more time span for fulfilling one or more power consuming tasks defined by said power producer (PP) are complied with.

26. A method according to any of the claims 19 to 25, wherein said power producer characteristic (PPC) comprises information regarding the expected power production within a predefined time span.

27. A method according to any of the claims 19 to 26, wherein at least one of said consumer groups (CG) in said cluster (C) is a local consumer group (CG) specifically established to comprise a consumer group characteristic comprising expected power consumption complying with an expected power production of at least one local power producer (PP) in said cluster (C).

28. A method according to any of the preceding claims, wherein said one or more consumer groups (CG) and/or clusters (C) are dynamically established based on utility grid characteristic comprising information of the structure and/or behaviour of the utility grid (UG).

29. A method according to claim 28, wherein said utility grid characteristic comprises information of the impedance of said utility grid (UG) at specific sections of said utility grid (UG).

30. A method according to claims 28 and 29, wherein said utility grid characteristic comprises information of reflection losses of said utility grid (UG) at specific sections of said utility grid (UG).

31. A method according to claims 28-30, wherein said utility grid characteristic comprises information of transformation losses of said utility grid (UG) at specific sections of said utility grid (UG).

32. A method according to any of the preceding claims, wherein the production of power produced by said one or more power producers (PP) is adapted to said utility grid characteristic to reduce transmission of power in specific sections of the utility grid (UG).

33. A method according to any of the preceding claims, wherein one or more power consumers (PC) being member of a first consumer group (CG) and/or cluster (C) are further a member of one or more other consumer groups (CG) and/or clusters (C).

34. A method according to any of the preceding claims, wherein said power consumer characteristics (PCC), said consumer group characteristics and/or said power producer characteristics (PPC) are stored at one or more central data bases (DB).

35. A central control arrangement (CCA) configured for performing the method according to any of the claims 1-34.

36. An apparatus configured for being installed at a power consumer (PC), said apparatus being configured for communicating with a central control arrangement (CCA) configured for performing the method according to any of the claims 1-34 to transmit power consumer characteristic (PCC) providing information of said of power consumer (PC).