Method and apparatus for actively managing consumption of electric power over an electric power grid

• US 9,678,522 B2
• Filed: 08/11/2014
• Issued: 06/13/2017
• Est. Priority Date: 08/28/2007
• Status: Active Grant

• Current Assignee: Causam Enterprises, Inc., Itron, Inc., Resideo Technologies, Inc.
• Original Assignee: Causam Energy, Inc.
• Inventors: Forbes, Jr., Joseph W.
• Primary Examiner(s): PATEL, RAMESH B
• Application Number:
  US14/456,306
• Publication Number:
  US 20140350745A1
• Time in Patent Office: 1,037 Days
• CPC Class Codes: G01D 2204/14 Displaying of utility usage with respect to time, e.g. for monitoring evolution of usage or with respect to weather conditions
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: G05F 1/66 Regulating electric power
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 2310/12 The local stationary network supplying a household or a building
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

A client device manages consumption of power supplied by an electric utility to multiple power consuming devices. Power flow to the power consuming devices is selectively enabled and disabled by one or more controllable devices controlled by the client device. The client device receives a power control message from a load management server. In one embodiment, the power control message indicates at least one of an amount of electric power to be reduced and an identification of at least one controllable device to be instructed to disable a flow of electric power to one or more associated power consuming devices. Responsive to the power control message, the client device issues a power management command or instruction to one or more controllable devices under the client device'"'"'s control. The power management command causes the controllable device(s) to disable a flow of electric power to at least one associated power consuming device.

Claims

1. A method for a client device to manage a flow of power within an electric power grid to a plurality of power consuming devices, the client device being responsive to power control messages issued by a load management server and controlling at least one controllable device that selectively enables and disables electric power to flow to at least one of a plurality of power consuming devices, the method comprising the steps of:

receiving a power control message from the load management server, the power control message being responsive to a power control request and indicating at least one of an amount of electric power to be reduced, disabled, or enabled and an identification of at least one controllable device to be instructed to enable or disable a flow of electric power to at least one associated power consuming device;

responsive to the power control message, issuing a power management command to a controllable device, the power management command causing the controllable device to disable a flow of electric power to at least one associated power consuming device to provide a reduction in consumed power; and

generating a power supply value (PSV) corresponding to the reduction in consumed power.

2. The method of claim 1, further comprising communicating a report message to the load management server, the report message including an indication of an amount of power consumed by at least one power consuming device and the corresponding PSV.

3. The method of claim 1, wherein the PSV is associated with individual devices and/or aggregation of a multiplicity of power consuming devices.

4. The method of claim 1, wherein the PSV indicates a compensation provided for power supply associated with the reduction in consumed power.

5. The method of claim 1, wherein the compensation includes at least one of capacity compensation, energy compensation, operating reserves compensation, compensation to include ancillary services, other grid stabilizing services, voltage support, black start, cold load pick up, conservation voltage reduction, and other reserve services.

6. The method of claim 1, further comprising communicating a status message to the load management server, the status message indicating a status of the at least one controllable device.

7. The method of claim 1, further comprising communicating a status message to the load management server, the status message indicating a total amount of power consumed by the power consuming devices under control of the at least one controllable device and the corresponding power supply value.

8. The method of claim 1, further comprising receiving a subsequent power control message from the load management server, the subsequent power control message instructing the client device to enable the electric power flow to the power consuming devices that had the electric power flow previously disabled.

9. The method of claim 1, wherein at least one smart meter is coupled to the client device, the method further comprising:

receiving a control message from the load management server instructing the client device to read the at least one smart meter;

responsive to receipt of the control message, issuing a command to the at least one smart meter requesting a power reading; and

responsive to receipt of the power reading, communicating the power reading to the load management server.

10. The method of claim 1, further comprising:

receiving a status message from the load management server, the status message requesting status information for the one or more controllable devices;

receiving a status response message from the at least one controllable device; and

storing each status response message in a memory for reference in connection with power reduction events.

11. The method of claim 1, wherein the client device includes a Layer-3 router and wherein at least one Internet-accessible device is coupled to the client device, the method further comprising:

receiving, by the Layer-3 router, an Internet Protocol (IP) message that includes an IP address;

determining, by the Layer-3 router, whether the IP message is directed to an Internet-accessible device coupled to the client device; and

communicating the IP message to the Internet-accessible device.

12. The method of claim 11, wherein the IP message is encrypted, the method further comprising:

determining, by the Layer-3 router, whether the IP message is directed to the client device or the Internet-accessible device; and

decrypting the IP message.

13. The method of claim 1, wherein the client device is coupled to an Internet Protocol (IP) network, the method further comprising requesting IP addresses for at least one of the client device and the at least one controllable device.

14. The method of claim 1, wherein the power control message includes a list of controllable devices to be instructed to disable a flow electric power to associated power consuming devices and wherein the power management command causes controllable devices identified in the list to disable a flow of electric power to associated power consuming devices to achieve the reduction in consumed power.

15. A client device for use in a system that manages electric power on an electric grid, wherein the power is supplied to a plurality of power consuming devices, wherein power flow over the electric grid to at least some of the plurality of power consuming devices is enabled and disabled by a plurality of controllable devices, wherein at least one controllable device operates under the control of the client device, wherein the client device receives power control messages from a remote load management server, and wherein a power control message received from the load management server is responsive to a power reduction request, the client device comprising:

at least one controllable device interface facilitating communication of power control instructions to the at least one controllable device, the power control instructions operable to cause the at least one controllable device to selectively enable and disable a flow of electric power to at least one power consuming device of the plurality of power consuming devices; and

a device control manager operably coupled to the at least one controllable device interface, the device control manager operable to issue power control instructions to the at least one controllable device through the at least one controllable device interface responsive to the received power control message, the power control instruction operable to cause the at least one controllable device to disable or enable a flow of electric power to at least one associated power consuming device, and based upon the reduction in consumed power for disabled flow of electric power, generating a power supply value (PSV) corresponding to the reduction in consumed power.

16. The client device of claim 15, wherein the power supply value indicates a compensation provided for power supply associated with the reduction in consumed power.

17. The client device of claim 16, wherein the compensation includes at least one of capacity compensation, energy compensation, operating reserves compensation, compensation to include ancillary services, other grid stabilizing services, voltage support, black start, cold load pick up, conservation voltage reduction, and other reserve services.

18. The client device of claim 15, wherein the PSV is generated based upon a governing entity for the power grid operating region and/or operational regulations.

19. The client device of claim 15, wherein the received power control message indicates at least one of an amount of electric power to be reduced and an identification of a controllable device to be instructed to disable a flow of electric power to one or more associated power consuming devices.

20. The client device of claim 15, further comprising a communications interface facilitating communications between the load management server and the client device, wherein the device control manager communicates at least one power consumption indicator and at least one power management status to the load management server via the communications interface.

21. The client device of claim 15, wherein the at least one power consumption indicator includes a power consumption indicator associated with each controllable device and wherein the at least one power management status includes a power management status associated with each controllable device.

22. The client device of claim 15, further including a communications interface comprising an Internet Protocol (IP)-based interface.

23. The client device of claim 15, wherein the received power control message includes Internet Protocol (IP) addresses of one or more controllable devices to be instructed to disable a flow of electric power to one or more associated power consuming devices.

24. The client device of claim 15, further comprising:

a Layer-3 router operable to receive an Internet Protocol (IP) message that includes an IP address and determine whether the IP message is directed to the client device or an Internet-accessible device coupled to the client device; and

an IP device interface, coupled to the Layer-3 router, that receives the IP message from the Layer-3 router when the IP message is directed to message to the Internet-accessible device.

25. A client device for use in a system that manages power flow for an electric grid including electric power supplied to a plurality of power consuming devices, wherein power flow to at least some of the plurality of power consuming devices is selectively enabled and disabled by a plurality of controllable devices, wherein at least one controllable device operates under the control of the client device, and wherein the client device receives a plurality of power control messages from a load management server, the client device comprising:

a communications interface that is operable to receive the plurality of power control messages from the load management server, a power control message of the plurality of power control messages being responsive to a power reduction request indicating at least one of an amount of electric power to be reduced and an identification of at least one controllable device to be instructed to disable a flow of electric power to one or more associated power consuming devices;

at least one controllable device interface facilitating communication of power control instructions to the at least one controllable device, the power control instructions causing the at least one controllable device to selectively enable and disable a flow of electric power to at least one power consuming device of the plurality of power consuming devices; and

a device control manager operably coupled to the communications interface and the at least one controllable device interface, the device control manager operable to issue a power control instruction to the at least one controllable device through the at least one controllable device interface responsive to the power control message, the power control instruction operable to cause the at least one controllable device to disable a flow of electric power to at least one associated power consuming device so as to achieve a reduction in consumed power as requested by the control center and based upon the reduction in consumed power, generating a power supply value (PSV) associated with the power consuming device(s) and corresponding to the reduction in consumed power.

26. The client device of claim 25, wherein the PSV is generated at a control center or at the device level.

27. The client device of claim 25, wherein a received power control message is responsive to a power reduction request issued by a control center of the electric utility.

28. A client device for use in a system that manages power supplied to a plurality of power consuming devices, wherein power flow to at least some of the plurality of power consuming devices is selectively enabled and disabled by a plurality of controllable devices, wherein one or more of the plurality of controllable devices operates under the control of the client device, and wherein the client device receives a plurality of power control messages from a remote load management server, the client device comprising:

a communications interface that receives the plurality of power control messages from the load management server, a power control message of the plurality of power control messages indicating at least one of an amount of electric power to be reduced and an identification of at least one controllable device to be instructed to disable a flow of electric power to one or more associated power consuming devices, and based upon the amount of electric power to be reduced, generating a power supply value (PSV) corresponding to the amount of electric power reduced;

at least one controllable device interface operable to facilitate communication of a power control instruction to at least a first controllable device, the power control instruction operable to cause the first controllable device to disable a flow of electric power to at least one power consuming device of the plurality of power consuming devices; and

a device control manager operably coupled to the communications interface and the at least one controllable device interface, the device control manager operable to generate the power control instruction responsive to the power control message.

29. The client device of claim 28, wherein the PSV is generated at a control center or at the device level.