中国电力2025，Vol.58Issue(6)：198-205,8.DOI:10.11930/j.issn.1004-9649.202409096
基于拖尾电流识别的断路器失灵保护判据与延时优化
Criterion and Delay Optimization of Circuit Breaker Failure Protection Based on Tail Current Recognition
摘要
Abstract
When the circuit breaker acts,the current on the primary side of the current transformer suddenly decreases,and the inductive effect will form a tail current on secondary side,which will cause the time of return of the failure protection to be too long,resulting in the failure protection maloperation.A comprehensive criterion for the identification of circuiter failure protection based on tail current is proposed to improve the reliability of identification.Firstly,the working principle of the current transformer is analyzed,and the mechanism of the influence the tail current on the failure protection of the circuit breaker is explored.Secondly,the minimum algorithm and Fréchet distance algorithm are combined to construct a fast and reliable of the tail current comprehensive judgment criteria;Finally,according to the action delay and requirements of the circuit breaker failure protection,the delay of the circuit breaker failure protection optimized.The proposed method can effectively avoid the maloperation of the circuit breaker failure protection.关键词
断路器/失灵保护/拖尾电流/延时优化Key words
circuit breaker/failure protection/tailing current/delay optimization引用本文复制引用
陈祥文,刘阳,赵青春,张今,金明亮,徐晓春,王玉龙,谢华..基于拖尾电流识别的断路器失灵保护判据与延时优化[J].中国电力,2025,58(6):198-205,8.基金项目
国家电网有限公司科技项目(SGHZ0000DKJS2400325). This work is supported by Science and Technology Project of SGCC(No.SGHZ0000DKJS2400325). （SGHZ0000DKJS2400325）
