US 12,230,966 B2
Power control method and apparatus, and energy system
Mingxuan Dong, Shanghai (CN); and Kai Xin, Shanghai (CN)
Assigned to HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Sep. 28, 2023, as Appl. No. 18/476,577.
Application 18/476,577 is a continuation of application No. PCT/CN2021/083520, filed on Mar. 29, 2021.
Prior Publication US 2024/0030713 A1, Jan. 25, 2024
Int. Cl. H02J 3/32 (2006.01); H02J 3/38 (2006.01); H02J 7/00 (2006.01)
CPC H02J 3/32 (2013.01) [H02J 3/38 (2013.01); H02J 7/0048 (2020.01); H02J 2300/24 (2020.01); H02J 2300/28 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A power control method, applied to an energy system comprising a power control apparatus, an energy storage system (ESS), and a renewable energy system, wherein the power control apparatus is connected to the ESS and the renewable energy system, and the method comprises:
performing one or more adjustments on a filter parameter based on battery information of the ESS that is at a first control moment, and performing one or more times of power filtering by a filter based on a respective filter parameter obtained through each adjustment, until a power fluctuation rate determined based on a power obtained through filtering is less than or equal to a preset threshold, wherein a sampling power at the first control moment comprises an active power of the ESS and an output power of the renewable energy system that are sampled at the first control moment, and each of the one or more times of power filtering is filtering performed based on a power obtained through a previous time of filtering; and
determining, based on the power obtained through filtering, a given power of the ESS that is at the first control moment, wherein the given power of the ESS is used to control the active power of the ESS.