Using demand side resources to provide frequency regulation
First Claim
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1. A method comprising:
- at each electrical load of an aggregation of loads, generating a load status report using a microprocessor or microcontroller, the load status report comprising an urgency value indicating how critical it is for the electrical load to run and a power level indicating how much power will be drawn by the electrical load if the load runs;
conveying the load status reports from the electrical loads to an aggregation dispatch controller comprising an electronic data processing device;
at the aggregation dispatch controller, generating a dispatch signal based on the generated load status reports and information indicative of electrical frequency;
transmitting the dispatch signal from the aggregation dispatch controller to the electrical loads of the aggregation; and
at each electrical load of the aggregation, operating the load at the reported power level if the reported urgency value satisfies the dispatch signal and not operating the load at the reported power level if the reported urgency value does not satisfy the dispatch signal;
wherein an electrical load submits both a more urgent load status report and a less urgent load status report, and the operating at the electrical load comprises;
operating the load at the power level of the less urgent load status report if the urgency values of both the less urgent load status report and the more urgent load status report satisfies the dispatch signal;
operating the load at the power level of the more urgent load status report if the urgency value of the more urgent load status report satisfies the dispatch signal but the urgency value of the less urgent load status report does not satisfy the dispatch signal; and
not operating the load at all if the urgency value of the less urgent load status report does not satisfy the dispatch signal and the urgency value of the more urgent load status report does not satisfy the dispatch signal.
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Abstract
In a direct load control system supporting frequency control of an electrical grid, at each electrical load of an aggregation of loads, a load status report is generated comprising an urgency value and a power level. At an aggregation dispatch controller, a dispatch signal is generated based on the generated load status reports and information indicative of electrical frequency. At each electrical load of the aggregation, the load is operated at the reported power level if the reported urgency value satisfies the dispatch signal and is not operated at the reported power level if the reported urgency value does not satisfy the dispatch signal.
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Citations
16 Claims
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1. A method comprising:
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at each electrical load of an aggregation of loads, generating a load status report using a microprocessor or microcontroller, the load status report comprising an urgency value indicating how critical it is for the electrical load to run and a power level indicating how much power will be drawn by the electrical load if the load runs; conveying the load status reports from the electrical loads to an aggregation dispatch controller comprising an electronic data processing device; at the aggregation dispatch controller, generating a dispatch signal based on the generated load status reports and information indicative of electrical frequency; transmitting the dispatch signal from the aggregation dispatch controller to the electrical loads of the aggregation; and at each electrical load of the aggregation, operating the load at the reported power level if the reported urgency value satisfies the dispatch signal and not operating the load at the reported power level if the reported urgency value does not satisfy the dispatch signal; wherein an electrical load submits both a more urgent load status report and a less urgent load status report, and the operating at the electrical load comprises; operating the load at the power level of the less urgent load status report if the urgency values of both the less urgent load status report and the more urgent load status report satisfies the dispatch signal; operating the load at the power level of the more urgent load status report if the urgency value of the more urgent load status report satisfies the dispatch signal but the urgency value of the less urgent load status report does not satisfy the dispatch signal; and not operating the load at all if the urgency value of the less urgent load status report does not satisfy the dispatch signal and the urgency value of the more urgent load status report does not satisfy the dispatch signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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an aggregation of electrical loads; and a dispatch controller; wherein each electrical load of the aggregation is configured to generate a load status report comprising an urgency value indicating how critical it is for the electrical load to run and a power level indicating how much power will be drawn by the electrical load if the load runs, transmit the load status report to the dispatch controller, receive a dispatch signal from the dispatch controller, and operate at the reported power level if the urgency value satisfies the received dispatch signal and not operate at the reported power level if the urgency value does not satisfy the received dispatch signal; and wherein the dispatch controller is configured to generate the dispatch signal based on information indicative of electrical frequency and based on the load status reports received from the aggregation of electrical loads, and transmit the generated dispatch signal to the electrical loads of the population; and wherein an electrical load of the aggregation is configured to generate two or more load status reports with different urgency values and to operate at the reported power of the least urgent load status report whose urgency value satisfies the received dispatch signal or to not operate at all if none of the urgency values satisfy the received dispatch signal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification