500kV断路器防拒动隐患排查分析

Troubleshooting Analysis on Hidden Failures Related to Avoid Act-refused Errors of 500 kV Circuit Breakers

基于500 kV断路器机械特性测试及动作电压测试的有效样本分析,摸清了省内500 kV各厂、各型断路器进入中修阶段后的运行特性;并结合各断路器试验参数不合格及临近标准界限时的已投运年限分布规律,给出了各型断路器建议检修周期。这对于今后500 kV断路器采购选型及针对性检修具有参考意义,有助于保障高压电网安全稳定运行。

Based on the effective sample analysis of mechanical characteristics tests and action voltage test of circuit breakers,the operation characteristics of 500 kV circuit breakers of various types and plants in the Province after entering the intermediate repair stage are basically found out,combined with the distribution pattern of the operation years when the test parameters of each circuit breaker are unqualified and approaching the standard limit,the recommended maintenance intervals for various types of circuit breakers are given,which is of reference significance to the future selection,procurement and targeted maintenance of 500 kV circuit breakers,helpful to ensure the safe and stable operation of high-voltage power grids.