Direct load control frequency regulation support system

• US 9,880,576 B2
• Filed: 12/06/2013
• Issued: 01/30/2018
• Est. Priority Date: 12/07/2012
• Status: Active Grant

• Current Assignee: Battelle Memorial Institute
• Original Assignee: Battelle Memorial Institute
• Inventors: McCullough, Jason, Rehberg, Eric, Black, Jason W., Dvorsky, James, Mansouri, Seyed
• Primary Examiner(s): Bahta, Kidest
• Application Number:
  US14/435,979
• Publication Number:
  US 20150268683A1
• Time in Patent Office: 1,516 Days
• Field of Search: 700276, 700295, 700286
• CPC Class Codes: G05D 23/1917 using digital means
• CPC Class Codes: G05F 1/66 Regulating electric power
• CPC Class Codes: G06Q 30/08 Auctions
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02J 3/003 Load forecast, e.g. methods or systems for forecasting future load demand
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/50 Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

A plurality of interactive electrical loads defines an aggregation connected with an electrical power grid. A scheduler generates a baseline power consumption schedule for the aggregation, determines frequency regulation capacity of the aggregation, and controls actual power consumption of the aggregation based on the baseline power consumption and an Automated Generation Control (AGC) signal of the electrical power grid to operate the aggregation as an ancillary frequency control device of the electrical power grid with the determined frequency regulation capacity. The controlling may comprise generating baseline dispatch signals for implementing the baseline consumption schedule, adjusting the baseline dispatch signals based on the AGC signal to generate adjusted dispatch signals, transmitting the adjusted dispatch signals to the plurality of interactive electrical loads defining the aggregation, and generating an AGC response log based on differences between the adjusted dispatch signals and the baseline dispatch signals.

Claims

1. A method comprising:

generating, via an electronic data processing device, a baseline consumption schedule for operating a plurality of interactive electrical loads, wherein a load aggregation comprises the electronic data processing device and the plurality of interactive loads connected with an electrical power grid;

transmitting dispatch signals to the interactive electrical loads, the transmitted dispatch signals being dispatch signals of the baseline consumption schedule adjusted based on electronic control signals of the electrical power grid;

generating a response log based on differences between consumption corresponding to the actually transmitted dispatch signals and the baseline consumption schedule;

determining frequency regulation capacity of the load aggregation; and

performing secondary frequency control of the electrical power grid using a plurality of ancillary frequency control devices in accordance with the determined frequency regulation capacity of the load aggregation, wherein the load aggregation is one of the ancillary frequency control devices;

wherein the generating of the baseline consumption schedule, the transmitting, and the generating of the response log are performed by the electronic data processing device.

2. The method of claim 1 further comprising:

after generating the baseline consumption schedule,

submitting a bid to supply the frequency regulation capacity for frequency control.

3. The method of claim 2 wherein the bid is submitted to a grid operator and the method further comprises:

receiving the electronic control signals comprising an AGC signal from the grid operator.

4. The method of claim 1 wherein the plurality of ancillary frequency control devices further includes at least one of ancillary generator, an ancillary battery, and an ancillary flywheel.

5. The method of claim 1 wherein the transmitting comprises:

transmitting the dispatch signals to the interactive electrical loads via a wireless network or a power line communication (PLC) network.

6. A system comprising:

an electronic data processing device configured to transmit dispatch signals to control a plurality of interactive electrical loads, the electronic data processing device configured to interface with an electrical power grid as an ancillary frequency control device providing capacity for frequency control of the electrical power grid, and wherein the electronic data processing device is configured to mimic an ancillary generator providing capacity for secondary frequency control of the electrical power grid.

7. The system of claim 6 further comprising:

said plurality of interactive electrical loads.

8. The system of claim 7 wherein said plurality of interactive electrical loads include residential electrical loads.

9. The system of claim 7 wherein said plurality of interactive electrical loads include hot water heaters.

10. The system of claim 7 wherein said plurality of interactive electrical loads include heating, ventilation, and air conditioning (HVAC) units.

11. The system of claim 6, wherein the electronic data processing device is configured to transmit dispatch signals to control the interactive electrical loads in accordance with a baseline consumption schedule for a time interval adjusted based on an Automated Generation Control (AGC) signal of the electrical power grid.

12. The system of claim 11 wherein the electronic data processing device is further configured to generate auditing information for auditing the capacity provided for frequency control of the electrical power grid based on differences between consumption corresponding to the transmitted dispatch signals and the baseline consumption schedule for the time interval.

13. The system of claim 11 wherein the electronic data processing device is further configured to generate the baseline consumption schedule for an upcoming time interval based on information about the interactive electrical loads.

14. The system of claim 11 wherein the electronic data processing device is further configured to generate the baseline consumption schedule for an upcoming time interval based on energy requirements for the interactive electrical loads reported to the electronic data processing device by the interactive electrical loads.

15. The system of claim 6 wherein the electronic data processing device is further configured to submit a bid to provide capacity for frequency control of the electrical power grid based at least on capacity determined based on a baseline consumption schedule for an upcoming time interval.

16. A non-transitory storage medium storing instructions executable by an electronic data processing device in communication with a plurality of interactive electrical loads defining an aggregation connected with an electrical power grid, wherein the instructions are executable to perform a method comprising:

generating a baseline power consumption schedule for the aggregation;

determining frequency regulation capacity of the aggregation; and

controlling actual power consumption of the aggregation based on the baseline power consumption and electronic control signals received from the electrical power grid to operate the aggregation as an ancillary frequency control device for secondary frequency control of the electrical power grid with the determined frequency regulation capacity.

17. The non-transitory storage medium of claim 16 wherein the method further comprises:

generating a frequency regulation capacity bid based on the determined frequency regulation capacity; and

communicating the frequency regulation capacity bid to an operator of the electrical power grid.

18. The non-transitory storage medium of claim 16 wherein the controlling comprises:

generating baseline dispatch signals for implementing the baseline consumption schedule;

adjusting the baseline dispatch signals based on the electronic control signals received from the electrical power grid to generate adjusted dispatch signals;

transmitting the adjusted dispatch signals to the plurality of interactive electrical loads defining the aggregation; and

generating a response log based on differences between power consumption corresponding to the adjusted dispatch signals and the baseline power consumption schedule.