| 官亭变电站800kV GIS断路器绝缘击穿原因分析 |
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| 引用本文： | 何庆,方保民,崔浩.官亭变电站800kV GIS断路器绝缘击穿原因分析[J].青海电力,2011(Z1):55-59. |
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| 作者姓名： | 何庆 方保民 崔浩 |
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| 作者单位： | 西宁输变电运行(建设)公司; |
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| 摘 要： | 官亭变电站800 kV7530 GIS断路器B相在合闸过程中发生跳闸,经过解体检查发现断路器内部绝缘击穿,通过对故障部位的绝缘拉杆、绝缘支撑筒进行外观检查、内检、电场模拟、X光探伤、绝缘试验、质量追查,排除了固体绝缘件本身质量问题,判定导致故障的原因是绝缘拉杆表面55号润滑脂涂抹过多,合闸时发生液化受气流冲到绝缘拉杆沿面,造成绝缘拉杆表面电场畸变,局部电场强度过高导致绝缘击穿。该结论对于今后800 kV甚至1 000 kV的GIS设备运行、制造、安装等方面具有参考意义。
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| 关 键 词： | 800kV 断路器 绝缘击穿 断路器故障 |
Analysis on the Reason of 800kV Breaker Insulation Breakdown for Guanting Substation |
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| HE Qing,FANG Bao-min,CUI Hao.Analysis on the Reason of 800kV Breaker Insulation Breakdown for Guanting Substation[J].Qinghai Electric Power,2011(Z1):55-59. |
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| Authors: | HE Qing FANG Bao-min CUI Hao |
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| Affiliation: | HE Qing,FANG Bao-min,CUI Hao |
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| Abstract: | The 800kV 7530 GIS B-phase breaker of Guanting substation occurs tripping in the closing process,after disintegration examination revealed breaker internal insulation breakdown,through the inspection,ruled out the quality problems of solid insulation.Determined the cause of the failure is insulated rod surface printing too much grease 55,liquefaction by airflow rushes the surface of insulating rod in the closing,caused the distortion of insulated rod surface and local high electric field strength,leading to... |
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| Keywords: | 800kV breaker insulation breakdown breaker failure |
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