一起220 kV某GIS设备伸缩节的放电故障

A Discharge Fault of Expansion Joint of 220 kV GIS Equipment

摘要: 气体绝缘开关设备受制造技术、装配工艺、运行环境等因素影响，运行中可能会出现SF₆气体泄漏、局部放电等故障。介绍了某220 kV气体绝缘设备伸缩节气室漏气放电，220 kV母差保护动作跳闸，通过此次事故分析，对GIS设备的运行维护具有一定的借鉴意义。

Abstract: Influenced by manufacturing technology, assembly process, operating environment and other factors, the gas-insulated switchgear may have SF₆ gas leakage, partial discharge and other faults during operation. This paper introduces the leakage discharge of the expansion throttle chamber of a 220 kV gas-insulated equipment, and the tripping of the 220 kV bus differential protection. Through this accident analysis, it has certain reference significance for the operation and maintenance of GIS equipment.