System for Optimizing Electricity Use from an Electric Grid and Related Method

Patent metadata

Field	Value
Publication number	US-2016009192-A1
Application number	US-201514745293-A
Country	US
Kind code	A1
Filing date	Jun 19, 2015
Priority date	Jul 11, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

A method of optimizing electricity use from an electric grid is disclosed. The method includes formulating a target load using a cost function for the electric grid, broadcasting a cost signal to the electric device based on the target load, receiving a charging profile from the electric device based on the cost signal, aggregating a demand profile for the electricity use based on the charging profile, determining an updated cost signal based on the demand profile, and broadcasting the updated cost signal to another electric device. The electric device is chargeable electric device, such as a plug-in electric vehicle (PEV). The electric device determines the charging profile only once based on the cost signal, and is charged at maximum power.

First claim

1 . A system for optimizing electricity use from an electric grid, said system comprising:
a grid operator configured to formulate a target load using a cost function for said electric grid; said grid operator configured to broadcast a cost signal to said electric device based on said target load; a server in said grid operator receiving a charging profile from said electric device based on said cost signal; an aggregator in said grid operator aggregating a demand profile for said electricity use based on said charging profile; said grid operator configured to determine an updated cost signal based on said demand profile; said grid operator configured to broadcast said updated cost signal to another electric device.

2 . The system of claim 1 , further comprising means for plugging an electric device into said electric grid.

3 . The system of claim 1 , wherein said electric device is a chargeable electric device.

4 . The system of claim 1 , wherein said electric device is a plug-in electric vehicle (PEV).

5 . The system of claim 1 , wherein said target load is configured by said grid operator to fill a primary electricity demand valley.

6 . The system of claim 1 , wherein said target load is configured by said grid operator to fill a secondary electricity demand valley.

7 . The system of claim 1 , wherein said target load is configured by said grid operator to reduce a ramp rate for said electric grid.

8 . The system of claim 1 , wherein said electric device determines said charging profile only once based on said cost signal.

9 . The system of claim 1 , wherein said system is configured to charge said electric device at a maximum charging rate.

10 . The system of claim 1 , wherein said grid operator is configured to determine said updated cost signal at set time intervals.

11 . The system of claim 1 , wherein said grid operator is configured to determine said updated cost signal for set number of registered electric devices.

12 . A method of optimizing electricity use from an electric grid, said method comprising:
formulating a target load using a cost function for said electric grid; broadcasting a cost signal to said electric device based on said target load; receiving a charging profile from said electric device based on said cost signal; aggregating a demand profile for said electricity use based on said charging profile; determining an updated cost signal based on said demand profile; broadcasting said updated cost signal to another electric device.

13 . The method of claim 12 , further comprising plugging in an electric device to said electric grid prior to said formulating said target load.

14 . The method of claim 12 , wherein said electric device is a chargeable electric device.

15 . The method of claim 12 , wherein said electric device is a plug-in electric vehicle (PEV).

16 . The method of claim 12 , wherein said electric device determines said charging profile only once based on said cost signal to avoid iterative communication between said electric device and said grid operator.

17 . The method of claim 12 , further comprising said target load filling a primary electricity demand valley.

18 . The method of claim 12 , further comprising said target load filling a secondary electricity demand valley.

19 . The method of claim 12 , wherein said determining said updated cost signal is performed at set time intervals.

20 . The method of claim 12 , wherein said determining said updated cost signal is performed for set number of registered electric devices.

Assignees

• Univ California

Inventors

• Zhang Li
• Jabbari Faryar
• Samuelsen Scott

Classifications

• G06Q50/06

  Energy or water supply · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title

• G07F15/005

  dispensed for the electrical charging of vehicles (electrical charging as such, B60L50/00) · CPC title

• Y04S30/14

  Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title