高压断路器误动的原因分析及采取的措施

分析了高压断路器误动的原因,介绍了采取的相应措施:对于直流系统接地引起的高压断路器误动或拒动,可以通过定期巡查系统对地绝缘、保护控制回路的接线牢固、定期清扫盘柜来解决;对于保护回路中GL系列过流继电器的过流、速断动触点的支撑部分绝缘老化引起的误动,可以使用改造GL型过流继电器触点、定期检查清理触头的方法;对于震动引起的断路器误动,可以采取的措施是焊牢有关柜、槽钢等,并进行检查。通过采取保护措施,可保证化工生产的安全稳定运行。

The Cause and Remedy of the Malfunction of the High-voltage Circuit Breaker

The cause of the malfunction of the high-voltage circuit breaker was analyzed and corresponding countermeasures suggested.The malfunction or function rejection of the high-voltage circuit breaker caused by the earthing of the direct current system can be resolved by carrying out routine inspection,protecting the earthing of the control loop and routine cleaning up.Modifying the contact of the GL overcurrent relay or carrying out routine inspection can resolve the malfunction problem caused by the overcurrent of the overcurrent relay of the GL system in the protective loop,quick break and the aging of the insulation of the supporting part of the moving contact.Proper welding and inspection can be performed for the cabinets,steel channels,etc.for the malfunction of the circuit breaker caused by vibration.Proper protective measures should be taken to ensure safe and stable operation of chemical production.