某电厂 500kV GIS内绝缘子击穿故障分析及处理

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中图分类号：TM855 文献标志码：A 文章编号：2095-2945(2025)14-0174-04

Abstract: This paper introducesa trip accident caused byan internal insulator breakdown failure in a 500kV GIS.Based onthercording of the tripswitch,theactionreportofthe fielddevice,the humidityandcompositionanalysis of SF gas in the GIS,andtheinsulationresistancemeasurement,thelocationofthefailedgaschamberwasdetermined.Theinternalbreakdown failureoftheinsulatorinthegaschamberwasanalyzedthroughdisassembly，andthecauseofthefailurewasdiscussdand analyzed.AhandovertestwascarredoutontheGISafterthereplacementofanewinsulator，andcorespondingsuggestions were put forward for subsequent GIS operation and maintenance and fault handling.

Keywords: GIS; insulator; SF AC withstand voltage; processing

GIS因为其结构紧凑、占地面积和空间体积小、运行安全、安装和维护工作量小、检修周期长的优点，广泛应用于电力系统中。（剩余5236字）