一起高压开关柜过流保护误动作的分析与处理

Analysis and Treatment of Misoperation of Over-current Protection in a High Voltage Switchgear Cabinet

针对虎龙沟矿高压柜突然频繁跳闸事故,从速断及过流保护动作原理入手,分析查找过流保护误动作原因,以确定故障点,及时修复处理故障元器件,消除开关频繁误动作现象。

Aiming at the sudden frequent tripping accident of the high-pressure cabinet in Hulonggou Mine,this paper introduces the operation principle of quick break and over-current protection,analyzes and looks up the causes of misoperation of over-current protection,in order to determine the fault point and repair and deal with the fault components in time.Eliminate frequent misoperation of switches.