Load curtailment on an electrical grid
First Claim
1. A system comprising:
- a power source coupled to an electrical grid and configured to provide power to the electrical grid, wherein the power source is configured to reduce a voltage on the electrical grid as a consequence of a current drawn by the electrical grid exceeding a threshold current;
a first load control system coupled between the electrical grid and a first load, wherein the first load control system is configured to perform load control operations comprising;
measuring the voltage on the electrical grid at a plurality of times, and for each measuring of the voltage;
determining a difference between a specified normal voltage and the respective measured voltage at that time to obtain a difference value;
determining a curtailment level that is a summation of each of the difference values determined at each of the plurality of times, wherein the summation is reset when the difference values are each below a threshold for a specified duration of time;
determining whether the curtailment level exceeds a first threshold curtailment level; and
in response to determining that the curtailment level exceeds the first threshold curtailment level, adjusting an amount of power drawn by the load.
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Accused Products
Abstract
In general, one innovative aspect of the subject matter described in this specification can be embodied in a load control system configured to perform load control operations comprising: measuring a voltage on an electrical grid at a plurality of times; determining, for each time of the plurality of times, a difference between a specified normal voltage and the respective measured voltage at that time; summing the differences between the specified normal voltage and the measured voltages to determine a curtailment level; determining whether the curtailment level exceeds a first threshold curtailment level; and in response to determining that the curtailment level exceeds the first threshold curtailment level, adjusting an amount of power drawn by a load.
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Citations
18 Claims
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1. A system comprising:
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a power source coupled to an electrical grid and configured to provide power to the electrical grid, wherein the power source is configured to reduce a voltage on the electrical grid as a consequence of a current drawn by the electrical grid exceeding a threshold current; a first load control system coupled between the electrical grid and a first load, wherein the first load control system is configured to perform load control operations comprising; measuring the voltage on the electrical grid at a plurality of times, and for each measuring of the voltage; determining a difference between a specified normal voltage and the respective measured voltage at that time to obtain a difference value; determining a curtailment level that is a summation of each of the difference values determined at each of the plurality of times, wherein the summation is reset when the difference values are each below a threshold for a specified duration of time; determining whether the curtailment level exceeds a first threshold curtailment level; and in response to determining that the curtailment level exceeds the first threshold curtailment level, adjusting an amount of power drawn by the load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A load control system configured to be coupled between an electrical grid and a load, wherein load control system is configured to perform load control operations comprising:
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measuring the voltage on the electrical grid at a plurality of times, and for each measuring of the voltage; determining a difference between a specified normal voltage and the respective measured voltage at that time to obtain a difference value; determining a curtailment level that is a summation of each of the difference values determined at each of the plurality of times, wherein the summation is reset when the difference values are each below a threshold for a specified duration of time; and as a consequence of determining that the curtailment level exceeds a threshold curtailment level, adjusting an amount of power drawn by the load. - View Dependent Claims (12, 13, 14)
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15. A method performed by a load control system coupled between an electrical grid and a load, the method comprising:
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measuring the voltage on the electrical grid at a plurality of times, and for each measuring of the voltage; determining a difference between a specified normal voltage and the respective measured voltage at that time to obtain a difference value; determining a curtailment level that is a summation of each of the difference values determined at each of the plurality of times, wherein the summation is reset when the difference values are each below a threshold for a specified duration of time; and as a consequence of determining that the curtailment level exceeds a threshold curtailment level, adjusting an amount of power drawn by the load. - View Dependent Claims (16, 17, 18)
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Specification