Disconnect load control receiver for resistive heating loads

Patent metadata

Field	Value
Publication number	US-11916388-B2
Application number	US-202117798783-A
Country	US
Kind code	B2
Filing date	Feb 10, 2021
Priority date	Feb 10, 2020
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

An electrical power distribution control system configured to issue a demand response signal to cut power to a plurality of electrical power consuming loads within an electrical power distribution network to reduce a peak power demand within an electrical power grid during a peak power demand. Unlike conventional demand response systems, the controller in each consumer residence includes both a distributed control based on the ability to track individual 24 hour usage patterns and selectively delay the demand response signal on individual resistive heating loads based on usage patterns for the purpose of reducing a likelihood of consumers experiencing effects of the reduced peak power demand.

First claim

The invention claimed is:

1. An electrical power distribution control system configured to issue a demand response signal to reduce power to a plurality of electrical power consuming loads within an electrical power distribution network to reduce a peak power demand within an electrical power grid while permitting distributive timing control of individual loads in responding to the demand response signal, the electrical power distribution control system comprising:
at least one disconnect load control receiver (DLCR) operably coupled to at least one resistive heating load of the plurality of electrical power consuming loads within the electrical power grid; and
a utility operated controller configured to communicate a demand response signal to the at least one DLCR to reduce power to the plurality of electrical power consuming loads to reduce the peak power demand within the electrical power grid,
wherein the at least one DLCR is configured to monitor actual power consumption data of the at least one resistive heating load of the plurality of electrical consuming loads and generate a 24-hour power consumption demand model for the at least one resistive heating load,
wherein the DLCR is configured to selectively delay the demand response signal to manage a flow of electrical power to the at least one resistive heating load based on the 24-hour power consumption demand model,
wherein the DLCR uses the 24-hour power consumption demand model to forecast an expected output consumer demand for the at least one resistive heating load over a 24-hour period, and
wherein the management of the flow of electrical power to the at least one resistive heating load is constrained by a deferred runtime limit, the deferred runtime limit representing a computed time delay permissible to achieve a consumer satisfaction threshold of the at least one resistive water heater over the 24-hour period.

2. The electrical power distribution control system of claim 1 , wherein the at least one resistive heating load is at least one of a resistive water heater and a resistive pool heater.

3. The electrical power distribution control system of claim 1 , wherein the at least one resistive heating load is a resistive water heater, and the consumer satisfaction threshold is configured such that the resistive water heater continuously maintains a desired water output temperature of at least an established temperature over the 24-hour period.

4. The electrical power distribution control system of claim 1 , wherein the deferred runtime limit is, at least in part, a function of a water heater capacity, a difference between a desired water output temperature and a water source temperature, and a consumer adjustable safety margin.

5. The electrical power distribution control system of claim 4 , wherein the consumer adjustable safety margin is adjustable via a mobile computing device.

6. The electrical power distribution control system of claim 1 , wherein the DLCR is configured to selectively defer energy usage to a lower cost per unit time during a 24-hour period.

7. The electrical power distribution control system of claim 1 , wherein the electrical power grid further includes one or more distributed energy resource configured to generate an additional supply of electrical power, and wherein the DLCR is configured to selectively defer energy usage to artificially create an energy demand during times of excess power generation within the electrical power grid.

8. The electrical power distribution control system of claim 1 , wherein the 24-hour power consumption demand model generated by the DLCR is a moving average of the actual power consumption data collected over a plurality of 24-hour periods.

9. The electrical power distribution control system of claim 8 , wherein the moving average is a weighted moving average, and wherein the actual power consumption data collected over a recent 24-hour period is weighted relative to the actual power consumption data collected over the recent 24-hour period.

10. The electrical power distribution control system of claim 1 , wherein the at least one DLCR is housed in a rigid protective cover configured to electrically isolate and protect the interior subcomponents of the DLCR, and wherein the DLCR can be configured to control both legs of a power source at multiple amperage options and further includes a Ground Fault Interrupter (GFI) configured to shut off electrical power in the event of a ground fault.

11. An electrical power distribution control system configured to regulate at least one resistive water heater to reduce power consumption within an electrical power grid during a peak power demand, the electrical power distribution control system comprising:
a plurality of disconnect load control receivers (DLCRs) operably coupled to a corresponding plurality of resistive water heaters; and
a utility operated controller, remotely located from the DLCRs, configured to communicate with each of the DLCRs to provide a demand response control signal,
wherein each of the DLCRs is configured to generate actual power consumption data of its respective resistive water heater for the generation of a 24-hour power consumption demand model for each resistive water heater,
wherein one of the controller and the plurality of DLCRs is configured to use 24-hour power consumption demand model to forecast an expected output consumer demand for each resistive water heater over a 24-hour period such that the DLCRs on an individual basis selectively manage a flow of electrical power its respective resistive water heater to meet the expected output consumer demand over the 24-hour period, while reducing power consumption within the electrical power grid during a peak power demand, and
wherein the selective managing of the flow of electrical power to the at least one resistive water heater is constrained by a deferred runtime limit, the deferred runtime limit representing a time delay permissible to achieve a consumer satisfaction threshold of the at least one resistive water heater over the 24-hour period.

12. The electrical power distribution control system of claim 11 , wherein the consumer satisfaction threshold is configured such to continuously maintain a desired water output temperature of at least an established temperature over the 24-hour period.

13. The electrical power distribution control system of claim 11 , wherein the deferred runtime limit is, at least in part, a function of a water heater capacity, a difference between a desired water output temperature and a water source temperature, and a consumer adjustable safety margin.

14. The electrical power distribution control system of claim 13 , wherein the consumer adjustable safety margin is adjustable via a mobile computing device.

15. The electrical power distribution control system of claim 11 , wherein the utility operated controller is configured to selectively defer energy usage to a lower cost per unit time during a 24-hour period.

16. A method of reducing a peak power demand within an electrical power grid, comprising:
establishing a communication link between at least one disconnect load control receiver (DLCR) and a controller, the DLCR operably coupled to at least one resistive heating load within the electrical power grid;
receiving actual power consumption data of the at least one resistive heating load from the DLCR;
generating of a 24-hour power consumption demand model based on the received actual power consumption data;
forecasting an expected output consumer demand for the at least one resistive heating load over a 24-hour period;
caus

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Rognli Roger W
• Walter Jesse
• Slingsby Karl
• Brager Ryan F

Classifications

• H02J3/17 Primary

  Demand-responsive operation of AC power transmission or distribution networks · CPC title

• H02J2105/57

  according to a pre-established time schedule · CPC title

• H02J3/144 Primary

  Electricity · mapped topic

• F24H15/148

  Assessing the current energy consumption · CPC title

• F24H15/152

  Forecasting future energy consumption · CPC title