System and method for managing consumption of power supplied by an electric utility

• US 7,715,951 B2
• Filed: 08/28/2007
• Issued: 05/11/2010
• Est. Priority Date: 08/28/2007
• Status: Active Grant

• Current Assignee: Landis+Gyr Technology, Inc. (Landis+Gyr Group AG)
• Original Assignee: Consert, Inc. (Landis+Gyr Group AG)
• Inventors: Webb, Joel L., Forbes, Joseph W. Jr.
• Primary Examiner(s): Patel; Ramesh B
• Application Number:
  US11/895,909
• Publication Number:
  US 20090062970A1
• Time in Patent Office: 987 Days
• Field of Search: 700/22, 700/286, 700/291, 700/295, 700/297, 702 60-632, 705 9- 10, 323/299, 323/304, 323/318, 713/300, 713/310, 713/320, 713/340
• US Class Current: 700/291
• 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: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 10/06393 Score-carding, benchmarking or key performance indicator [KPI] analysis
• CPC Class Codes: G06Q 30/0207 Discounts or incentives, e.g. coupons or rebates
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 2310/14 The load or loads being home appliances
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02B 70/34 Smart metering supporting the carbon neutral operation of end-user applications in buildings
• 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 20/242 Home appliances
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading
• CPC Class Codes: Y04S 50/14 Marketing, i.e. market research and analysis, surveying, promotions, advertising, buyer profiling, customer management or rewards

Abstract

A system for managing consumption of power supplied by an electric utility to power consuming devices includes at least one client device and a server. Each client device operates at least partially responsive to control messages received from the server and controls operation of one or more controllable devices. Each controllable device selectively enables and disables a flow of power to one or more of the consuming devices. The server stores information, on a per client device basis, relating to power consumed by the consuming devices. When a power reduction is requested by the utility, the server selects, based on client device information stored in the database, at least one client device to which to issue a power reduction message that indicates at least one of an amount of power to be reduced and an identification of a controllable device to be instructed to disable a flow of power.

Claims

1. A system for managing consumption of power supplied by an electric utility to a plurality of power consuming devices, the system comprising:

one or more client devices, each client device operating, in part, responsive to received power control messages and including;

at least one controllable device interface facilitating communication of power control instructions to at least one controllable device, each controllable device selectively enabling and disabling a flow of electric power to a power consuming device of the plurality of power consuming devices responsive to the power control instructions; and

a device control manager operably coupled to the at least one controllable device interface, the device control manager generating the power control instructions responsive to the received power control messages; and

a server communicatively coupled to the electric utility and the one or more client devices, the server including;

a command processor operably to receive power control commands from the electric utility and issue power control event messages responsive thereto, at least one of the power control commands requiring a reduction in an amount of electric power consumed by the plurality of power consuming devices;

an event manager operable to receive the power control event messages, maintain at least one power management status relating to each client device and issue power control event instructions responsive in the power control event messages;

a database for storing, on a per client device basis, information relating to power consumed by the plurality of power consuming devices during operation of the plurality of power consuming devices; and

a client device manager operably coupled to the event manager and the database, the client device manager selecting from the database, based on the information stored in the database, at least one client device to which to issue a power control message indicating at least one of an amount of electric power to be reduced and 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 receipt of a power control event instruction requiring a reduction in a specified amount of electric power.

2. The system of claim 1, wherein the client device manager receives from each client device at least one power consumption indicator and at least one power management status.

3. The system of claim 2, 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.

4. The system of claim 1, wherein the database further includes information, on a per controllable device basis, relating to a maximum amount of time during which flow of electric power may be disabled by a particular controllable device.

5. The system of claim 1, wherein the database further includes information, on a per client device basis, relating to a maximum amount of time during which flow of electric power may be disabled by the at least one controllable device.

6. The system of claim 1, wherein the server further includes a power savings application that computes an amount of electric power saved for each customer participating in the system during a power reduction event affecting the customer.

7. The system of claim 1, wherein the server further includes a client interface that facilitates communication of the power control messages to the one or more client devices and wherein each client device further includes a communications interface that facilitates communication of the power control messages to the client device.

8. The system of claim 7, wherein the client interface and the communications interface comprise IP-based interfaces.

9. The system of claim 8, wherein the client interface and the communications interface comprise one of WiMax and High Speed Packet Access interfaces.

10. The system of claim 1, wherein the at least one controllable device includes at least one smart appliance and wherein at least some of the one or more client devices further include a smart device interface that facilitates communication of the power control instructions to the at least one smart appliance.

11. The system of claim 10, wherein the smart device interface comprises a broadband over power line interface.

12. The system of claim 1, wherein the power control commands include a power inquiry command requesting the server to determine an amount of electric power available for temporary reduction from supply by the electric utility, wherein the command processor issues an associated power control event message responsive to the power inquiry command, and wherein the server further includes:

a utility database that stores current power usage information for the electric utility,

wherein the event manager accesses the utility database responsive to receipt of the associated power control event message and communicates a response to the power inquiry command indicating the amount of power available for temporary reduction based on the current power usage information.

13. The system of claim 1, wherein each client device includes dynamic host configuration protocol (DHCP) functionality to enable the client device to dynamically request Internet Protocol addresses for the client device and the at least one controllable device from a DHCP server on a host network facilitating communications between the client device and the server.

14. The system of claim 1, wherein each controllable device has an address associated therewith, wherein the at least one controllable device interface facilitates addressed-based communication of power control instructions to the at least one controllable device, and wherein each power control Instruction is addressed to at least one controllable device.

15. A method for a system to manage consumption of power supplied by an electric utility to a plurality of power consuming devices, the system including a server and at least one client device, the server being communicatively coupled to We electric utility and the at least one client device, the method comprising:

receiving, by the server, a power control command from the electric utility, the power control command requiring a reduction in an amount of electric power consumed by the plurality of power consuming devices;

responsive to the power control command, determining, by the server, a group one or more client devices to which to issue a power control message, each client device of the group of client devices controlling at least one controllable device, each controllable device enabling and disabling a flow of electric power to at least one power consuming device of the plurality of power consuming devices, the power control message indicating at least one of an amount of electric power to be reduced and an identification of one or more controllable devices to be instructed to disable a flow of electric power to one or more associated power consuming devices;

issuing, by the server, the power control message to the group of client devices;

receiving, by at least one client device of the group at client devices the power control message; and

responsive to the power control message, issuing, by the at least one client device of the group of client devices, a power control instruction to a controllable device, thereby causing the controllable device to which the power control instruction was issued to disable a flow of electric power to at least one associated power consuming device.

16. The method of claim 15, wherein each controllable device has an address associated therewith and wherein the step of issuing a power control instruction to a controllable device comprises;

issuing, by the at least one client device of the group of client devices, a power control instruction to a controllable device using addressed-based communication, wherein the power control instruction is addressed to the controllable device.