10 kV配电站断路器无故障跳闸分析及处理措施

Analysis and Treatment Measures of Fault-free Tripping of Circuit Breaker in 10 kV Distribution Station

无故障跳闸是一次系统无故障情况下的断路器误跳闸,分析跳闸原因时较难入手。系统地对可能引起跳闸的隐患或原因进行分类,主要分为断路器机械机构问题、二次接线问题、保护装置逻辑问题、直流电源质量等,并针对性分析了一起感应电压造成的误跳闸事件,最终采用有效的处理措施。

Fault-free tripping is an undesired tripping of a circuit breaker when there encounters no fault in the primary system.It is difficult to analyze the cause of this type of tripping.This paper systematically classifies the potential hazards or causes that may lead to fault-free tripping,which are mainly divided into factors such as the circuit breaker mechanical mechanism problems,the secondary wiring problem,the logic problem of the protection device,and the quality of the DC power supply.An undesired tripping event caused by induced voltage and the corresponding handling measures adopted,are specifically analyzed.