GIS电压互感器气室典型缺陷分析及处理

Analysis and Treatment of Typical Defects in GIS Voltage Transformer Chambers

针对组合电器(gas insulated switchgear,GIS)电压互感器气室局部放电带电检测发现的缺陷案例,总结了缺陷发现过程、判定方法及处理措施,检测结果表明电压互感器气室具有结构复杂、受振动干扰大等特征,阐明了常见缺陷类型及特点,同时发现超声波局部放电法对发现GIS电压互感器局部放电缺陷优于特高频法,具有重要借鉴意义。

In response to the defect cases discovered during partial discharge live detection of voltage transformer chambers in gas insulated switchgear(GIS),this paper introduces the defect discovery process,determination method,and treatment measures.The detection results show that the voltage transformer chambers have complex structures and are greatly affected by vibration interference.The common types and characteristics of defects are explained,and it was found that the ultrasonic partial discharge method is superior to the ultra-high frequency method in detecting partial discharge defects in GIS voltage transformers,which has important reference significance.