目前GIS设备在电网运行中占据了很大的部分，而隔离开关是GIS设备中的关键结构，其健康状况对于电网的正常运行和对于高电压的隔离具有重要意义。GIS的可靠性虽然高，但仍然存在故障。仅2014年内，云南电网太安变500 kV隔离开关就发生了两起隔离开关击穿故障。由于隔离开关气室的封闭性，目前对于GIS隔离开关内部故障的分析具有一定的局限性。故通过使用ANSYS仿真计算的方法，对高压GIS隔离开关进行模拟计算。通过构建缺陷模型，从电场分布变化的角度对隔离开关故障的分析提供依据。%At present, the GIS equipment occupies a large part in the operation of the power network, and the isolation switch is the key structure of the GIS device, the health status of the normal operation of the power grid and the high voltage isolation is of great signiifcance. The reliability of GIS is high, but there are still faults. Only in 2014, the Yunnan power grid 500 kV Taian isolation switch has two isolation switch breakdown. Due to the isolation of the gas chamber, there are some limitations in the analysis of the internal fault of GIS isolation switch. By using the method of ANSYS simulation, the simulation calculation of the high voltage GIS isolating switch is carried out. By constructing defect model, the analysis of the fault of the isolated switch from the point of view of the distribution of electric ifeld is provided.
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