Apparatus and method for controlling peak energy demand based on a global schedule

• US 9,268,313 B2
• Filed: 04/17/2013
• Issued: 02/23/2016
• Est. Priority Date: 02/10/2010
• Status: Active Grant

• Current Assignee: Enel X North America, Inc. (ENEL SPA)
• Original Assignee: Enernoc
• Inventors: Willig, Randy C., O'Kelley, Matthew B., Mathews, Jeffrey P., Reh, Jeffrey G.
• Primary Examiner(s): Ali, Mohammad
• Assistant Examiner(s): Lindsay, Bernard G
• Application Number:
  US13/864,942
• Publication Number:
  US 20130297092A1
• Time in Patent Office: 1,042 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G05B 13/02 electric
• CPC Class Codes: H02J 13/00004 characterised by the power network being locally controlled
• CPC Class Codes: H02J 13/00016 using a wired telecommunication network or a data transmission bus
• CPC Class Codes: H02J 13/00026 involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
• 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: 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 20/00 Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving

Abstract

An apparatus includes a monitor node and a first control node. The monitor node determines and broadcasts whether a non-system device is consuming an energy resource over a network. The first control node is coupled to the monitor node and a second control node via the network. The first control node has a node processor and a global schedule module. The node processor operates a first energy consuming device to maintain a first local environment. The global schedule module is coupled to the first node processor, and coordinates run times for the first energy consuming device and a second energy consuming device based on a replica copy of a global run time schedule disposed within the first and second control nodes, an adjusted first descriptor set characterizing the first local environment, an adjusted second descriptor set characterizing a second local environment, and energy consumption data broadcast by the monitor node.

Claims

1. An apparatus for controlling peak demand of a system of energy consuming devices, the apparatus comprising:

a monitor node, coupled to a non-system energy consuming device and to a demand coordination network, configured to determine and broadcast whether said non-system device is consuming an energy resource; and

a first control node, coupled to a second control node and said monitor node via said demand coordination network, said first control node comprising;

a node processor, coupled to a first energy consuming device, configured to operate the first energy consuming device within an acceptable operating margin to maintain a first local environment by cycling on and off;

a global schedule module, coupled to said node processor, configured to coordinate run times for said first energy consuming device and a second energy consuming device, wherein the coordination is based on a replica copy of a global run time schedule disposed within said first and second control nodes, an adjusted first descriptor set characterizing said first local environment, an adjusted second descriptor set characterizing a second local environment, and energy consumption data broadcast by said monitor node;

a local model module, coupled to said node processor, configured to develop a third descriptor set characterizing a third local environment associated with said first energy consuming device; and

a global model module, coupled to said node processor, said local model module, and said global schedule module, configured to develop said adjusted first and second descriptor sets, wherein said adjusted first and second descriptor sets are based upon said third descriptor set, a fourth descriptor set characterizing a fourth local environment associated with said second energy consuming device, and global sensor data received over said demand coordination network.

2. The apparatus as recited in claim 1, wherein said global schedule module coordinates said run times to reduce the peak demand of said energy resource.

3. The apparatus as recited in claim 1, wherein said global schedule module coordinates said run times by advancing a first start time.

4. The apparatus as recited in claim 3, wherein said global schedule module coordinates said run times by deferring a second start time.

5. The apparatus as recited in claim 4, wherein said global schedule module coordinates said run times by increasing a duty cycle.

6. An apparatus for controlling peak demand of a system of energy consuming devices, the apparatus comprising:

a monitor node, coupled to a non-system energy consuming device and to a demand coordination network, configured to determine and broadcast whether said non-system device is consuming an energy resource; and

a first control node, coupled to a second control node and said monitor node via said demand coordination network, said first control node comprising;

a node processor, coupled to a first energy consuming device, configured to operate the first energy consuming device within an acceptable operating margin to maintain a first local environment by cycling on and off;

a global schedule module, coupled to said node processor, configured to coordinate run times for said first energy consuming device and a second energy consuming device, wherein the coordination is based on a replica copy of a global run time schedule disposed within said first and second control nodes, an adjusted first descriptor set characterizing said first local environment, an adjusted second descriptor set characterizing a second local environment, and energy consumption data broadcast by said monitor node;

a local schedule module, coupled to said node processor and said global schedule module, configured to direct said first energy consuming device to cycle on and off at appropriate times as a function of a device actuation schedule provided by said global schedule module;

a local model module, coupled to said node processor, configured to develop a third descriptor set characterizing a third local environment associated with said first energy consuming device; and

a global model module, coupled to said node processor, said local model module, and said global schedule module, configured to develop said adjusted first and second descriptor sets, wherein said adjusted first and second descriptor sets are based upon said third descriptor set, a fourth descriptor set characterizing a fourth local environment associated with said second energy consuming device, and global sensor data received over said demand coordination network.

7. The apparatus as recited in claim 6, wherein said global schedule module coordinates said run times to reduce the peak demand of said energy resource.

8. The apparatus as recited in claim 6, wherein said global schedule module coordinates said run times by advancing a first start time.

9. The apparatus as recited in claim 8, wherein said global schedule module coordinates said run times by deferring a second start time.

10. The apparatus as recited in claim 9, wherein said global schedule module coordinates said run times by increasing a duty cycle.

11. A method for controlling peak demand of a system of energy consuming devices, the method comprising:

coupling a monitor node, a first control node, and a second control node together via a demand coordination network;

via the monitor node, determining and broadcasting whether a non-system device is consuming an energy resource;

via the first control node, operating a first energy consuming device within an acceptable operating margin to maintain a first local environment by cycling on and off;

coordinating run times for the first energy consuming device and a second energy consuming device, wherein the coordination is based on a replica copy of a global run time schedule disposed within the first and second control nodes respectively coupled to the first and second energy consuming devices, an adjusted first descriptor set characterizing the first local environment, an adjusted second descriptor set characterizing a second local environment, and energy consumption data broadcast by the monitor node;

first developing a third descriptor set characterizing a third local environment associated with the first energy consuming device; and

second developing the adjusted first and second descriptor sets, wherein said second developing is based upon the third descriptor set, a fourth descriptor set characterizing a fourth local environment associated with the second energy consuming device, and global sensor data received over the demand coordination network.

12. The method as recited in claim 11, wherein said coordinating is performed to reduce the peak demand of the energy resource.

13. The method as recited in claim 11, wherein said coordinating comprises:

advancing a first start time.

14. The method as recited in claim 13, wherein said coordinating further comprises:

deferring a second start time.

15. The method as recited in claim 14, wherein said coordinating further comprises:

increasing a duty cycle.