Energy Management System to Reduce the Loss of Excess Energy Generation

• US 20110313585A1
• Filed: 06/17/2010
• Published: 12/22/2011
• Est. Priority Date: 06/17/2010
• Status: Active Grant

• Current Assignee: NantEnergy, Inc.
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Park, Daniel J.
• Granted Patent: US 8,359,125 B2
• Time in Patent Office: Days
• US Class Current: 700/295
• CPC Class Codes: H02J 2310/60 Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
• CPC Class Codes: H02J 3/144 Demand-response operation of the power transmission or distribution network
• CPC Class Codes: H02J 3/32 using batteries with converting means
• 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

Abstract

Systems and devices for, and methods of, adaptive local energy storage capacity by changing operating set points of regulated energy load devices based on the presence, or absence, of an excess of available, generated energy.

Claims

1. A device for energy management comprising:

a central processing unit (CPU) and memory where the CPU is configured to;

engage an energy load device of highest priority not already engaged via a control signal, wherein the control signal invokes at least one of;

a set point override and a set point modification, if the energy supply level is greater than the measured energy consumption level; and

disengage an energy load device of lowest priority not already disengaged via a release signal, wherein the release signal invokes at least one of;

a relinquishment of an override and a restoration of an original set point, if the energy supply level is less than the measured energy consumption level.

2. The device of claim 1 wherein the control signal comprises a command to override a set point of a regulated energy load device;

and the release signal comprises a command to restore a set point of a regulated energy load device having an overridden set point.

3. The device of claim 1 wherein the control signal comprises a command to shift one or more set points, of a regulated energy load device, from nominal values to preset values stored at the regulated energy load device;

and the release signal comprises a command to restore one or more shifted set points of a regulated energy load device to the nominal values.

4. The device of claim 1 wherein the control signal comprises one or more set point updates and a command to replace nominal values of one or more set points of a regulated energy load device with an update value;

and the release signal comprises a command to restore one or more updated set point values of a regulated energy load device to the nominal values.

5. The device of claim 1 wherein the control signal comprises one or more set point updates and a command to replace one or more set points of a regulated energy load device with an update value;

and the release signal comprises nominal values and a command to replace the one or more updated set point values of a regulated energy load device with the received nominal value.

6. The device of claim 1 wherein the device is further configured to provide excess power to an external grid;

and wherein a provisioning of excess power to the external grid is based on a capacity of the external grid to receive the excess power.

8. The method of claim 6 wherein engaging is via a control signal comprising a command to override a set point of a regulated energy load device;

and the disengaging is via a release signal comprising a command to restore a set point of a regulated energy load device having an overridden set point.

9. The method of claim 6 wherein engaging is via a control signal comprising a command to shift one or more set points, of a regulated energy load device, from nominal values to preset values stored at the regulated energy load device;

and the disengaging is via a release signal comprising a command to restore one or more shifted set points of a regulated energy load device to the nominal values.

10. The method of claim 1 wherein the engaging is via a control signal comprising one or more set point updates and a command to replace nominal values of one or more set points of a regulated energy load device with an update value;

and the disengaging is via a release signal comprising a command to restore one or more updated set point values of a regulated energy load device to the nominal values.

11. The method of claim 1 wherein the engaging is via a control signal comprising one or more set point updates and a command to replace one or more set points of a regulated energy load device with an update value;

and the disengaging is via a release signal comprising nominal values and a command to replace the one or more updated set point values of a regulated energy load device with the received nominal value.

7. A method for energy management in a system of one or more energy load devices, the method comprising:

if the system comprises two or more energy load devices, then establishing an energy load device priority among the two or more energy load devices;

determining an energy supply level to the system;

determining a total energy consumption level based on the one or more energy load devices;

if the energy supply level is greater than the measured energy consumption level, then engaging a load device of highest priority not already engaged via a control signal, wherein the control signal invokes at least one of;

a set point override and a set point modification; and

if the energy supply level is less than the measured energy consumption level, then disengaging a load device of lowest priority not already disengaged via a release signal, wherein the release signal invokes at least one of;

a relinquishment of an override and a restoration of an original set point.

12. The method of claim 7 further comprising:

determining whether the system has excess power; and

determining a capacity of an external grid to receive excess power generated by the system.

13. The method of claim 12 further comprising delivering to an external grid having a determined capacity to receive excess power.