220kV断路器本体三相不一致误动原因分析及优化

Analysis and Optimization of Three-Phase Inconsistent Misoperation of 220kV Circuit Breaker

220kV断路器本体三相不一致保护回路设计有助于提升电力系统的安全性、有效性以及可靠性。从某地区220 kV断路器本体三相不一致保护跳闸事故出发,进行继电器检查和原因分析,确定造成220 kV断路器本体三相不一致误动的主要原因。同时结合实际情况,在回路设计、功率调整以及装置优化等的基础上,对220 kV断路器本体三相不一致回路进行优化,为二次系统运维管理提供有效参考。

The design of the three-phase inconsistent protection circuit of the 220 kV circuit breaker body helps to improve the safety,effectiveness and reliability of the power system.Starting from the trip accident of the threephase inconsistent protection of the 220 kV circuit breaker in a certain area,the relay inspection and cause analysis were carried out to determine the main cause of the three-phase inconsistency and misoperation of the 220 kV circuit breaker.At the same time,in combination with the actual situation,on the basis of circuit design,power adjustment and device optimization,the three-phase inconsistent circuit of the 220 kV circuit breaker body is optimized,which provides an effective reference for the operation and maintenance management of the secondary system.