浙江电力2025，Vol.44Issue(12)：35-42,8.DOI:10.19585/j.zjdl.202512004
刀闸位置异常对母差保护的影响及其校正逻辑
Impact of disconnector position anomalies on busbar differential protection and its correction logic
摘要
Abstract
The input of disconnector positions directly affects the selectivity and operation reliability of busbar differ-ential protection.First,the impact of disconnector position anomalies on the operation of busbar differential protec-tion is introduced,along with two tripping logics for feeders with anomalous disconnector positions.Then,the opera-tion of differential protection under conditions of false disconnector input,missing disconnector input,and reversed disconnector input is analyzed,and the advantages and disadvantages of the two tripping logics are compared.Fi-nally,a disconnector position correction logic is proposed,which utilizes circuit breaker positions,bus-tie switch status,busbar interconnection plate,and the magnitude and phase relationships of differential currents to achieve position correction.Simulation tests demonstrate that the disconnector position correction logic is simple and reli-able,unaffected by the number of feeders with position anomalies or the magnitude of load current,indicating strong field adaptability.关键词
刀闸位置/差动保护/跳闸逻辑/位置校正逻辑/断路器位置Key words
disconnector position/differential protection/tripping logic/disconnector correction logic/circuit breaker position引用本文复制引用
王风光,高姗姗,丁杰,龚啸,吕航,赵国勇,徐泽..刀闸位置异常对母差保护的影响及其校正逻辑[J].浙江电力,2025,44(12):35-42,8.基金项目
国家重点研发计划(2021YFB2401101) （2021YFB2401101）
