公开(公告)号：US20220003820A1

公开(公告)日：2022-01-06

申请号：US17447991

申请日：2021-09-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanzhong ZHANG ,  Yuandong MENG ,  Baiyu CHEN

IPC: G01R31/382 ,  H02H7/18

Abstract: Embodiments of this application disclose an arc detection method for performing protection in an energy storage system, and a related apparatus, to improve accuracy of arc detection in an energy storage system, promptly take an arc extinguishing measure, and reduce a probability of causing a safety hazard. The method in the embodiments of this application includes: A control apparatus obtains an electrical signal at an electrical connection point in an energy storage system. The control apparatus determines a frequency domain amplitude based on a frequency domain characteristic of the electrical signal. When the frequency domain amplitude is greater than a preset amplitude, the control apparatus controls the energy storage system to perform an arc extinguishing and protection operation on the electrical connection point.