Distributed energy resource topology and operation

Patent metadata

Field	Value
Publication number	US-11050256-B2
Application number	US-202016734629-A
Country	US
Kind code	B2
Filing date	Jan 6, 2020
Priority date	Sep 22, 2016
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

Systems and methods regarding distributed energy resource systems (DERs) are described. Configurations and employed methods may include sending a command to a DER system to place the DER system in one or more of a charge state, a discharge state, an idle state, or a reactive power state. These DER systems may include an energy storage circuit, a dc/ac converter configured to receive a DC voltage from the storage circuit and convert the received DC voltage for receipt by an external AC circuit, and one or more controllers configured to designate operation state of the storage circuit in at least a charge state, a discharge state, and an idle state.

First claim

What is claimed is:

1. A distributed energy resource comprising:
one or more controllers configured to designate an operational state of a storage circuit in at least a charge state, a discharge state, and an idle state, the one or more controllers further configured to designate a mode of operation of a dc/ac converter, the mode of operation of the dc/ac converter including at least a discharge mode where stored electrical energy in the storage circuit is converted to an AC voltage compatible with and for receipt by an external AC circuit, and
wherein the one or more controllers are further configured to receive a command over a network from an external computing device, the command to place the storage circuit in one or more of a charge state, a discharge state, an idle state, or a reactive power state.

2. The distributed energy resource of claim 1 wherein the storage circuit comprises a rechargeable battery.

3. The distributed energy resource of claim 1 wherein the one or more controllers and the dc/ac converter are resident in the same apparatus.

4. The distributed energy resource of claim 1 wherein the one or more controllers are further configured to designate the discharge mode of operation of the dc/ac converter during a first electrical load period of time of the external AC circuit and to not designate the discharge mode of operation during a second electrical load period of time of the external AC circuit, wherein a first electrical load during the first electrical load period of time is greater than a second electrical load during the second electrical load period of time.

5. The distributed energy resource of claim 1 wherein the external computing device comprises a laptop, a tablet computer, a smartphone, or a wearable computer.

6. The distributed energy resource of claim 1 wherein the one or more controllers are further configured to operate a graphical user interface (GUI).

7. The distributed energy resource of claim 1 wherein the one or more controllers are further configured to receive a command from a remote utility technician, the received command instructing to place the storage circuit in one or more of a charge state, a discharge state, an idle state, or a reactive power state.

8. A distributed energy resource process comprising:
at a computing device, sending a command over a network from the computing device to place one or more distributed energy resources (DER) in a state comprising a charge state, a discharge state, or an idle state, wherein the DER comprises:
one or more controllers configured to designate operation state of a storage circuit in at least a charge state, a discharge state, and an idle state, the one or more controllers further configured to designate a mode of operation of a dc/ac converter, the mode of operation of the dc/ac converter including at least a discharge mode where stored electrical energy in the battery is converted to an AC voltage compatible with and for receipt by an external AC circuit.

9. The distributed energy resource process of claim 8 wherein the storage circuit comprises a rechargeable battery.

10. The distributed energy resource process of claim 8 wherein the one or more controllers are further configured to designate the operation state of the storage circuit in at least a charge state, a discharge state, or an idle state predicated on a difference between a max rated current of a circuit and an existing load current of the circuit.

11. The distributed energy resource process of claim 8 wherein the one or more controllers are further configured to designate the operation state of the storage circuit in at least a charge state, a discharge state, an idle state or a reactive power state.

12. The distributed energy resource process of claim 8 wherein the one or more controllers are further configured to designate the operation state of the storage circuit in at least a charge state, a discharge state, an idle state or a reactive power state and when a reactive power state is designated to send commands to source or sink reactive power with the energy storage circuit.

13. The distributed energy resource process of claim 8 wherein the one or more controllers are further configured to designate the operation state of the storage circuit as a charge state when power from the external AC circuit is operating at a first price point and to designate the operation state of the storage circuit as a discharge state when the power from the external AC circuit is operating at a second price point, the second price point being greater than the first price point.

14. The distributed energy resource process of claim 8 wherein the one or more controllers are further configured to designate the operation state of the storage circuit as a charge state during a first daily time period and to designate the operation state of the storage circuit as a discharge state during a second daily time period, the second daily time period occurring each day after the first daily time period.

15. A distributed energy resource apparatus comprising:
one or more controllers configured to designate, by sending instruction over a network, an operational state of a storage battery cells circuit in at least a charge state, a discharge state, and an idle state,
and the one or more controllers further configured to designate a mode of operation of a dc/ac converter, by sending instruction over a network, the mode of operation of the dc/ac converter including at least a discharge mode where stored electrical energy in the storage battery cells circuit is converted to an AC voltage compatible with and for receipt by an external AC circuit.

16. The distributed energy resource apparatus of claim 15 wherein the one or more controllers are further configured to designate the operation state of the storage battery cells circuit in at least a charge state, a discharge state, or an idle state predicated on a difference between a max rated current of a circuit and an existing load current of the circuit.

17. The distributed energy resource apparatus of claim 15 wherein the one or more controllers are further configured to designate the operation state of the storage battery cells circuit in at least a charge state, a discharge state, an idle state or a reactive power state.

18. The distributed energy resource apparatus of claim 15 wherein the one or more controllers are further configured to designate the operation state of the storage battery cells circuit in at least a charge state, a discharge state, an idle state or a reactive power state and when a reactive power state is designated to send commands to source or sink reactive power with the energy storage battery cells circuit.

19. The distributed energy resource apparatus of claim 15 wherein the one or more controllers are further configured to designate the operation state of the storage battery cells circuit as a charge state when power from the external AC circuit is operating at a first price point and to designate the operation state of the storage battery cells circuit as a discharge state when the power from the external AC circuit is operating at a second price point, the second price point being greater than the first price point.

Assignees

• Sunpower Corp

Inventors

• Kern Gregory

Classifications

• H02J2101/22

  Solar energy · CPC title

• H02J2101/20

  Dispersed power generation using renewable energy sources · CPC title

• H02J7/62

  against overcurrent · CPC title

• H02J7/751

  concerning the insertion or the connection of the batteries · CPC title

• H02J7/663

  using battery or load disconnect circuits (H02J9/002 takes precedence) · CPC title