500kVGIS设备发生闪络接地故障的原因

Causes of Flashover Ground Fault in 500kVGIS Equipment

为提升电力系统供电的可靠性,从500 kV GIS设备绝缘情况、保护动作情况、SF6气体检测、局放试验、设计参数复测等方面入手,对某电厂发生故障的原因进行研判,从而追根溯源,提出相应的措施,解决此类问题。

In order to improve the reliability of power supply of the power system,through starting from the insulation condition of 500 kV GIS equipment,protection operation condition,SF6 gas detection,local discharge test,and design parameter retest,etc.the study investigates the cause of the failure of a power plant,so as to trace the root cause,put forward corresponding measures,and solve such problems.