ADAPTIVE CONTROL OF POWER GRID OPERATIONS BASED ON ENERGY PROFILES

• US 20130054044A1
• Filed: 08/22/2011
• Published: 02/28/2013
• Est. Priority Date: 08/22/2011
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Shaffer, Shmuel, Duffy, Paul Bernard
• Granted Patent: US 9,088,179 B2
• Time in Patent Office: Days
• US Class Current: 700/297
• CPC Class Codes: H02J 13/00002 characterised by monitoring
• CPC Class Codes: H02J 13/00017 using optical fiber
• 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 2310/54 according to a pre-established time schedule
• 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 3/144 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 20/222 Demand response systems, e.g. load shedding, peak shaving

Abstract

In one embodiment, an energy manager determines respective energy profiles of one or more local end-devices for which the energy manager is responsible. Through communication between a power grid controller and the energy manager, one or more aspects of power grid operations may be controlled based on the communicating and the respective energy profiles. For example, in one embodiment, upon receiving a global demand response (DR) request, the energy manager determines respective specific DR control for the one or more local end-devices based on the received DR request and the respective energy profiles, and transmits the respective specific DR control to the one or more local end-devices, accordingly. In another embodiment, power grid operations may be stabilized based on the respective energy profiles.

Claims

1. A method, comprising:

determining, by an energy manager, respective energy profiles of one or more local end-devices for which the energy manager is responsible;

communicating with a power grid controller by the energy manager; and

controlling one or more aspects of power grid operations based on the communicating and the respective energy profiles.

2. The method as in claim 1, wherein controlling comprises:

receiving, as the communicating, a global demand response (DR) request from the power grid controller at the energy manager;

determining respective specific DR control for the one or more local end-devices based on the received DR request and the respective energy profiles; and

transmitting the respective specific DR control to the one or more local end-devices.

3. The method as in claim 2, wherein the specific DR control comprises a deterministic offset time to respond to the global DR request.

4. The method as in claim 3, wherein responding the global DR request by a particular local end-device comprises one of either reducing power consumption or increasing power consumption.

5. The method as in claim 4, wherein determining respective specific DR control in response to the global DR request increasing power consumption comprises:

determining starting current of the one or more local end-devices; and

deterministically staggering the increasing power consumption to reduce a maximum shared overlap starting current among the one or more devices.

6. The method as in claim 5, further comprising:

instructing particular devices having comparatively larger starting current to increase power consumption prior to other devices having comparatively lower starting current.

7. The method as in claim 5, wherein determining the starting current comprises:

determining the starting current based on one or more environmental conditions.

8. The method as in claim 2, wherein determining respective specific DR control comprises:

reducing energy consumption of one or more particular end-devices of the local end-devices for a given length of time.

9. The method as in claim 2, wherein determining respective specific DR control comprises:

determining a subset of one or more particular end-devices of the local end-devices to respond to the DR request.

10. The method as in claim 9, wherein determining the subset is based on one or more features of the local end-devices selected from a group consisting of:

device priority;

device type; and

device energy consumption.

11. The method as in claim 1, further comprising:

communicating, by the energy manager, with a sub-local energy profile collector; and

receiving, from the sub-local energy profile collector, the respective energy profiles of the one or more local end-devices as one of either individual energy profiles or an aggregated energy profile.

12. The method as in claim 1, further comprising:

communicating, by the energy manager, with a second energy manager; and

further determining the respective specific DR control based on the communicating.

13. The method as in claim 12, wherein the second energy manager is one of either a neighboring energy manager having correspondingly local second end-devices or a hierarchically related energy manager.

14. The method as in claim 1, wherein controlling comprises:

stabilizing power grid operations based on the respective energy profiles.

15. The method as in claim 14, further comprising:

communicating the respective energy profiles from the energy manager to the power grid controller, wherein the power grid controller is configured to stabilize power grid operations based on the respective energy profiles.

16. An apparatus, comprising:

a processor adapted to execute one or more processes;

a network interface adapted to communicate as an energy manager with a plurality of local end-devices for which the energy manager is responsible and also with a power grid controller; and

a memory configured to store a process executable by the processor, the process when executed operable to;

determine respective energy profiles of the one or more local end-devices;

communicate with the power grid controller; and

control one or more aspects of power grid operations based on the communicating and the respective energy profiles.

17. The apparatus as in claim 16, wherein the process when executed is further operable to:

receive a global demand response (DR) request;

determine respective specific DR control for the one or more local end-devices based on the received DR request and the respective energy profiles; and

transmit the respective specific DR control to the one or more local end-devices.

18. The apparatus as in claim 16, wherein the process when executed is further operable to:

communicate with a sub-local energy profile collector; and

receive, from the sub-local energy profile collector, the respective energy profiles of the one or more local end-devices.

19. The apparatus as in claim 16, wherein the specific DR control comprises a deterministic offset time to respond to the global DR request.

20. The apparatus as in claim 16, wherein the process when executed is further operable to:

communicate with a second energy manager selected from a neighboring energy manager having correspondingly local second end-devices and a hierarchically related energy manager; and

further determine the respective specific DR control based on the communication.

21. The apparatus as in claim 16, wherein the process when executed to determine respective specific DR control is further operable to:

determine a subset of one or more particular end-devices of the local end-devices to respond to the DR request.

22. The apparatus as in claim 16, wherein the process when executed is further operable to:

communicate the respective energy profiles to the power grid controller, wherein the power grid controller is configured to stabilize power grid operations based on the respective energy profiles.

23. A tangible, non-transitory, computer-readable media having software encoded thereon, the software when executed by a processor on an energy manager operable to:

determine respective energy profiles of one or more local end-devices for which the energy manager is responsible;

communicate with a power grid controller; and

control one or more aspects of power grid operations based on the communicating and the respective energy profiles.

24. The computer-readable media as in claim 23, wherein the software when executed is further operable to:

receive a global demand response (DR) request;

determine respective specific DR control for the one or more local end-devices based on the received DR request and the respective energy profiles; and

transmit the respective specific DR control to the one or more local end-devices.

25. The computer-readable media as in claim 23, wherein the software when executed is further operable to:

communicate the respective energy profiles to the power grid controller, wherein the power grid controller is configured to stabilize power grid operations based on the respective energy profiles.