US 10,892,620 B2
State of charge maintenance during operation of energy storage systems
David Alan Gutenmann, Clifton Park, NY (US); Richard Hayes Cutright, Corinth, NY (US); Kenneth McClellan Rush, Ballston Spa, NY (US); Joshua Paul Webb, Schenectady, NY (US); Lukas Mercer Hansen, Niskayuna, NY (US); and Charles Clarence Hicks, Jr., Loudonville, NY (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Nov. 16, 2015, as Appl. No. 14/941,730.
Prior Publication US 2017/0141576 A1, May 18, 2017
Int. Cl. H02J 3/38 (2006.01); H02J 3/32 (2006.01); H02J 13/00 (2006.01)
CPC H02J 3/383 (2013.01) [H02J 3/32 (2013.01); H02J 3/386 (2013.01); H02J 3/381 (2013.01); H02J 13/0006 (2013.01); Y02E 10/56 (2013.01); Y02E 10/76 (2013.01); Y02E 40/70 (2013.01); Y02E 60/00 (2013.01); Y02E 70/30 (2013.01); Y04S 10/12 (2013.01); Y04S 10/123 (2013.01); Y04S 10/14 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for controlling an energy storage system, comprising:
receiving, by one or more control devices, a power demand associated with a grid service operation for an energy storage system, wherein an increase in the power demand specifies an amount of power to be discharged by the energy storage system onto the grid and a decrease in the power demand specifies an amount of power to be provided to the energy storage system from the grid;
accessing, by the one or more control devices, data indicative of one or more time shifts for responding to the power demand, wherein a duration of the one or more time shifts are selected based on a performance rating for the energy storage system;
generating, by the one or more control devices, a time shifted power demand based on the one or more time shifts, wherein the one or more time shifts are implemented during only the increase in power demand; and
controlling, by the one or more control devices, power delivery to or from the one or more energy storage devices in the energy storage system during the grid service operation based on the time shifted power demand to provide the grid service operation with a delay relative to the power demand.