ADAPTIVE DEMAND RESPONSE BASED ON DISTRIBUTED LOAD CONTROL

• US 20130090777A1
• Filed: 10/04/2012
• Published: 04/11/2013
• Est. Priority Date: 10/07/2011
• Status: Active Grant

• Current Assignee: Siemens Corp. (Siemens AG)
• Original Assignee: Siemens Corp. (Siemens AG)
• Inventors: Lu, Yan, Al Faruque, Mohammad Abdullah, Zhou, Siyuan
• Granted Patent: US 9,450,408 B2
• Time in Patent Office: Days
• US Class Current: 700/297
• 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 70/30 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 20/246 the system involving the remote operation of lamps or lighting equipment

Abstract

Adaptive demand response based on distributed load control may be provided. A demand response request indicative of a demand response event for an area may be received. A maximum power consumption for the area during the demand response event may be determined based on the demand response request. One or more set points for the area during the demand response event may be determined prior to the demand response event. The one or more set points are determined based on the maximum power consumption. Prior to or during the demand response event, a real-time power consumption for the area may be calculated. When the real-time power consumption exceeds the maximum power consumption, one or more loads in the area may be controlled to maintain the real-time power consumption at or below the maximum power consumption.

Claims

1. A method of providing adaptive demand response for an area, the method comprising:

receiving a demand response request indicative of a demand response event for the area;

determining, based on the demand response request, a maximum power consumption for the area during the demand response event;

determining, by a processor, prior to the demand response event, one or more set points for the area during the demand response event, the one or more set points determined based on the maximum power consumption;

calculating, by the processor, prior to or during the demand response event, a real-time power consumption of the area; and

controlling, by the processor, when the real-time power consumption exceeds the maximum power consumption, one or more loads in the area to maintain the real-time power consumption at or below the maximum power consumption.

2. The method of claim 1, wherein controlling the one or more loads comprises controlling one or more distributed loads.

3. The method of claim 1, wherein controlling the one or more loads comprises controlling one or more distributed loads based on occupancy information, user preferences, or an activity schedule.

4. The method of claim 3, wherein controlling the one or more distributed loads comprises controlling one or more plug-in loads and one or more central lighting systems in the area.

5. The method of claim 3, wherein controlling the one or more distributed loads comprises controlling one or more central lighting systems in the area.

6. The method of claim 3, wherein controlling the one or more distributed loads comprises controlling one or more plug-in loads in the area.

7. The method of claim 6, wherein the one or more plug-in loads are from one or more computers or lights not part of a central lighting system in the area.

8. The method of claim 6, wherein controlling the one or more plug-in loads comprises:

initiating a bid request to a plurality of gateway controllers in communication with one or more devices associated with the one or more plug-in loads;

receiving, in response to the bid request, information from the plurality of gateway controllers;

allocating load shedding to the one or more devices based on this information, the load shedding being equal to the difference between the real-time power consumption and the maximum power consumption;

generating control instructions to the plurality of gateway controllers based on the allocating.

9. The method of claim 8, wherein the information comprises occupancy information, user preferences, user input, or an activity schedule.

10. The method of claim 1, wherein calculating and controlling are performed prior to the demand response event and during the demand response event.

11. The method of claim 1, wherein calculating and controlling are performed at least twice during the demand response event.

12. In a non-transitory computer-readable storage medium having stored therein data representing instructions executable by a programmed processor for providing adaptive demand response for an area, the storage medium comprising instructions for:

receiving a demand response request indicative of a demand response event for the area, the demand response event indicative of a load shedding goal for the area;

determining, prior to the demand response event, one or more set points for the area based on the load shedding goal;

calculating, prior to or during the demand response event, the real-time power consumption of the area, the real-time power consumption of the area based, at least in part, one the one or more set points for the area;

controlling, when the real-time power consumption does not satisfy the load shedding goal for the area, one or more distributed loads in the area to satisfy the load shedding goal for the area.

13. The non-transitory computer-readable medium of claim 12, wherein controlling the one or more distributed loads comprises controlling one or more distributed loads based on occupancy information, user preferences, or an activity schedule.

14. The non-transitory computer-readable medium of claim 12, wherein controlling the one or more distributed loads comprises controlling one or more plug-in loads and one or more central lighting systems in the area.

15. A system of providing adaptive demand response for an area, the system comprising:

a first controller; and

a plurality of distributed load controllers operatively connected to the first controller, wherein the first controller is configured to;

receive a demand response request indicative of a demand response event for the area;

determine, based on the demand response event, a maximum power consumption for the area during the demand response event;

determine, prior to the demand response event, one or more set points for the area during the demand response event, the one or more set points determined based on the maximum power consumption;

calculate, prior to or during the demand response event, a real-time power consumption by the area;

generate, when the real-time power consumption exceeds the maximum power consumption, control instructions to control a plurality of loads in the area to maintain the real-time power consumption at or below the maximum power consumption; and

transmit the control instructions to a plurality of gateway controllers, and

wherein the gateway controllers are configured to receive the control instructions from the first controller and to control a plurality of devices or systems associated with the plurality of distributed loads.

16. The system of claim 15, wherein the first controller is operatively connected to a central lighting system for the area, and wherein the first controller is configured to directly control the central lighting system when the real-time power consumption exceeds the maximum power consumption.

17. The system of claim 15, wherein the first controller is configured to generate the control instructions based on occupancy information, user preferences, an activity schedule, or combinations thereof.

18. The system of claim 15, wherein, prior to generating the control instructions, the first controller is further configured to:

initiate a bid request to the plurality of gateway controllers;

receive, in response to the bid request, information from the plurality of gateway controllers; and

generate the control instructions based on the information received from the plurality of gateway controllers.

19. The system of claim 18, wherein the information comprises occupancy information, user preferences, user input, an activity schedule, or combinations thereof.

20. The system of claim 15, wherein the control instructions comprise power reduction instructions for the respective gateway controller, a maximum power consumption for the respective gateway controller, or combinations thereof.