继电器式电流保护误动作的故障判断与分析

Fault Diagnosis and Analysis of Electric Relay Type Current Protection Misoperation

对井下变电所继电器式电流保护误操作的故障进行了分析判断,介绍了速断及过流保护动作原理,查找了过流保护误动作原因的方法和步骤、判断故障类型、确定故障点,及时修复了处理故障元器件,消除了开关频繁误动作现象,保证了设备安全可靠运行。

The fault of electric relay type current protection misoperation in underground substation was analyzed and judged, the principle of quick break and overcurrent protection was introduced, and the methods and steps of misoperation in overcurrent protection were found out. The fault type was determined, the fault point was located, faulty components were repaired in time, eliminated the frequent misoperation of the switch, and ensured the safe and reliable operation of the equipment.