摘要
随着变电站的大量采用封闭式组合电器设备(GIS),罐式金属氧化物避雷器近年来得到大量广泛的应用,作为提高系统运行可靠性和限制电力系统过电压的重要保护设备,其设计技术水平、生产工艺和运行检测技术在不断的提高和完善中。介绍了一起110 kV封闭式组合电器GIS内置避雷器的故障诊断,通过解体检查,证实了避雷器故障系由绝缘支撑杆缺陷导致电阻片劣化引起的。
With the widely use of GIS in substation, GIS built-in Metal Oxide Surge Arrester （MOA） get extensive application in recent years, as the important protection equipment for improving the system operational reliability and limiting power system overvoltage, its design technology level, production technology and operation test technology has been developing and improving continuously. The diagnosis of a 110 kV GIS built-in MOA fault is introduced, through inspecting de-assembled ar- restor, it is verified that the arrester failure is caused by the resistor degradation led by insulation sup- port rods defects.
出处
《电瓷避雷器》
CAS
北大核心
2012年第3期82-85,共4页
Insulators and Surge Arresters
关键词
避雷器
故障
电阻片
劣化
arrester
fault
resistor
degradation
