System and method of controlling delivery and/or usage of a commodity

• US 7,379,997 B2
• Filed: 07/28/2003
• Issued: 05/27/2008
• Est. Priority Date: 03/28/2002
• Status: Active Grant

• Current Assignee: Invensys Systems Incorporated (Invensys PLC)
• Original Assignee: Robertshaw Controls Company (Schneider Electric SE)
• Inventors: Ehlers, Gregory A., Turner, James H., Beaudet, Joseph, Strich, Ronald
• Primary Examiner(s): Jaroenchonwanit, Bunjob
• Assistant Examiner(s): Whipple, Brian P
• Application Number:
  US10/628,504
• Publication Number:
  US 20040138981A1
• Time in Patent Office: 1,765 Days
• Field of Search: 709/224, 702 60- 62, 702/182, 702/188, 705/412
• US Class Current: 709/224
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/47 Responding to energy costs
• CPC Class Codes: F24F 11/523 for displaying temperature data
• CPC Class Codes: F24F 11/58 using Internet communication
• CPC Class Codes: F24F 11/64 using pre-stored data
• CPC Class Codes: F24F 11/86 by controlling compressors within refrigeration or heat pump circuits
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2120/00 Control inputs relating to users or occupants
• CPC Class Codes: G05B 23/0235 based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
• CPC Class Codes: G06Q 10/10 Office automation; Time management
• CPC Class Codes: G06Q 30/0601 Electronic shopping [e-shopping]
• CPC Class Codes: G06Q 40/06 Asset management; Financial planning or analysis
• 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 2310/64 The condition being economic, e.g. tariff based load management
• CPC Class Codes: H02J 2310/66 one of the loads acting as master and the other or others acting as slaves
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 67/125 involving control of end-device applications over a network
• 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: Y04S 20/222 : Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/242 : Home appliances
• CPC Class Codes: Y04S 40/18 : Network protocols supporting networked applications, e.g. including control of end-device applications over a network
• CPC Class Codes: Y04S 50/10 : Energy trading, including energy flowing from end-user application to grid

Abstract

A system and method manage delivery of energy from a distribution network to one or more sites. Each site has at least one device couple to the distribution network. The at least one device controllably consumes energy. The system includes a node and a control system. The node is coupled to the at least one device for sensing and controlling energy delivered to the device. A control system is coupled to the node and distribution network for delivering to the node at least one characteristic of the distribution network. The node for controls the supply of energy to the device as a function of the at least one characteristic.

Claims

1. A method for managing demand for a commodity provided by a utility company, the utility company delivering the commodity to a plurality of customer sites, the customer sites each having a plurality of devices which use the commodity, including the steps of:

providing a plurality of nodes, each node being associated with a corresponding device of the plurality of devices at the customer site;

defining an energy management program at the utility company having a subset of the plurality of devices for which usage of the commodity may be managed by activating the energy management program;

measuring, by each associated node, the instantaneous rate at which the commodity is being delivered to the associated device,

receiving at the utility company in real time, the instantaneous rate at which the commodity is being delivered to each of the devices;

determining at the utility company, in real time, a capacity of the commodity that can be managed by the utility company by activating the energy management program, the capacity being determined by the instantaneous rate at which the commodity is being delivered to the subset of the plurality of devices;

selectively activating the energy management program at the utility company to manage the usage of the commodity by the subset of devices; and

determining an actual consumption of the commodity at each device of the plurality of devices at the customer site following activation of the program such that the utility company can verify, in real time, management of the commodity usage for each device of the plurality of devices at the customer site following activation of the program.

2. A method, as set forth in claim 1, including the step of subsequently measuring at least one of a rate and a change in the rate at which the commodity is being delivered to each device of the subset of the devices after activation of the energy management program and receiving the rate or change in the rate at the utility.

3. A method, as set forth in claim 2, including the step of determining an actual capacity of the commodity saved by activating the energy management program.

4. A method, as set forth in claim 3, including the step of providing at least one of an alternate rate and a billing adjustment to at least one customer as a function of the actual measured commodity consumption reduction for each of the customer devices during activation of the energy management program.

5. A method, as set forth in claim 4, wherein the at least one of an alternative rate and a billing adjustment is also a function of historical usage information.

6. A method, as set forth in claim 1, wherein the step of defining the program includes the step of including within the program all devices of a similar type at each customer site.

7. A method, as set forth in claim 1, including the step of allowing a customer to subscribe to the program.

8. A method, as set forth in claim 1, wherein the program is mandatory.

9. A method, as set forth in claim 1, wherein the step of defining at least one program includes the step of defining a plurality of programs, each program having a respective subset of the devices.

10. A method, as set forth in claim 1, including the step of providing a graphical representation of the capacity available.

11. A method, as set forth in claim 1, wherein the commodity is electrical power.

12. A method, as set forth in claim 1, wherein the commodity is water.

13. A method, as set forth in claim 1, wherein the commodity is one of natural, gas and steam.

14. A method, as set forth in claim 1, wherein the step of defining at least one program includes the step of defining a plurality of programs, each program having a respective subset of the devices, the method including the step of providing a search function for identifying at lease one program which matches a set of conditions.

15. A method, as set forth in claim 14, wherein the set of conditions includes an available capacity.

16. A method, as set forth in claim 1, including the step of providing a utility interface.

17. A method, as set forth in claim 16, wherein the utility interface is accessible through a web browser.

18. A method, as set forth in claim 1, including the step of automatically activating the program under a predetermined set of conditions.

19. A method, as set forth in claim 1, wherein the step of managing the subset of devices includes the step of controlling usage of the commodity during a predetermined period of time.

20. A method, as set forth in claim 19, wherein at least one of the devices has an operating setpoint, and wherein the step of controlling the subset of devices includes the step of modifying the setpoint.

21. A method, as set forth in claim 1, including the steps of receiving a supply request and allowing an operator to responsively activate the program.

22. A method, as set forth in claim 21, wherein the supply request includes a request duration, wherein the program may be activated as a function of the request duration.

23. A method, as set forth in claim 1, including the step of downloading to each node, a program schedule containing scheduling information for the program.

24. A method, as set forth in claim 1, including the step of providing a gateway node coupled between the nodes and the utility.

25. A method, as set forth in claim 24, wherein each of the nodes is one of a load metering node, a control node, and a load control node.

35. A method, as set forth in claim 9, further comprising the step of determining at the utility, in real time, a capacity of the commodity that can be managed by the utility by activating each of the plurality of energy management programs.

36. A method, as set forth in claim 35, further comprising the step of selectively activating one or more of the energy management programs at the utility to manage the usage of the commodity by the subset of devices associated with each of the plurality of energy management programs.

26. A system for managing demand for a commodity provided by a utility company, the utility company delivering the commodity to a plurality of customer sites, each customer site having a plurality of devices which use the commodity, comprising:

a utility interface, operable by a user at the utility company, for defining an energy management program having a subset of the plurality of devices for which usage of the commodity at the customer site may be managed by activating the energy management program;

a distribution network for delivering the commodity to the subset of devices at the customer site;

a plurality of nodes, each node associated with a respective device of the subset of devices at the customer site; and

,

a control system coupled to the utility interface, the distribution network, and the nodes, for reducing the delivery of the commodity to the subset of the plurality of devices by activating the energy management program via the nodes, wherein the control system is operable to determine, in real time, a capacity of the commodity that can be managed by the utility company by activating the energy management program, the capacity being determined by an instantaneous rate at which the commodity is being delivered to each device of the subset of the plurality of devices at the customer site, wherein the control system is further operable to determine, in real time, an actual consumption of the commodity by each device of the subset of the plurality of devices at the customer site following activation of the energy management program.

27. A system, as set forth in claim 26, the control system being adapted to activate the program and the nodes adapted to subsequently measure the rate at which the commodity is being delivered to the subset of the devices.

28. A system, as set forth in claim 27, the control system for determining at least one of an actual rate of consumption of the commodity after activation of the energy management program and a change in a rate of consumption induced by activating of the energy management program.

29. A system, as set forth in claim 28, wherein the control system determines an at least one of an alternative rate and a billing adjustment to at least one customer as a function of the actual consumption at the related customer site by the program.

30. A system, as set forth in claim 29, wherein the at least one of an alternative rate and a billing adjustment is also a function of historical usage information.

31. A system, as set forth in claim 27, wherein the control system verifies management of the devices within the subset of the devices.

32. A system, as set forth in claim 28, wherein the utility interface allows the user to define a plurality of programs, each program having a respective subset of the device.

33. A system, as set forth in claim 26, including a gateway node coupled between the nodes and the utility.

34. A system, as set forth in claim 26, wherein each of the nodes is one of a load metering node, a control node, and a load control node.