一起1000kVGIS设备绝缘故障的分析

Analysis of an Insulation Fault of 1 000 kV GIS Equipment

对一起特高压变电站1000kVGIS绝缘故障的实例进行分析,介绍了绝缘故障的定位和分析方法,结合保护动作情况、故障录波信息以及SF6气体分解物检测等多种手段确定了故障气室,对故障气室进行返厂解体检查,找到了故障的发生原因,并提出了相应的防范措施。

An example of insulation fault in 1 000 kV GIS of UHV substation is analyzed.The location and analysis method of insulation fault are introduced.The fault gas chamber is determined by means of protection action,fault recording information and SF6 gas decomposition detection etc.The failed gas chamber is checked after it is returned to the factory and disassembled,the cause of the fault is found,the corresponding preventive measures are put forward.