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多种手段联合判断GIS闪络故障原因及分析

Li-peng MI,Quan-yi HU,Run-nan WAN

Electrotechnics Electric(Jiangsu Electrical Apparatus)（2018）

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Abstract
针对某变电站500kV气体绝缘金属封闭开关设备(GIS)开展现场交接试验过程中出现击穿的问题,通过闪络定位仪、气体分析仪及绝缘检测等多种手段对故障间隔气室进行定位,查找故障点,判断故障原因.解体后发现GIS内部导电杆上有明显的磕碰痕迹,改变了导电杆周围电场的分布规律,导致耐压过程中导电杆周围电场发生畸变,在导电杆上发生沿面放电,出现绝缘击穿现象.此次故障的发现及分析,为之后的交接试验及现场安装提供了经验.
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