【标题】一起雷击造成220kV GIS内部放电的事故分析
【Title】The Analysis on the Incident of 220kV GIS Internal Discharge caused by Lightning
【摘要】本文通过对一起雷击造成 220kV GIS内部放电的事故分析,分析了放电过程:波纹管内部,因安装调试、检修等原因,可能遗留金属微粒、灰尘等异物,也可能是波纹管上有毛刺,表面电场更加不均匀。过电压作用下,盆式绝缘子上静触头屏蔽罩端部和导电棒的端部对波纹管内壁击穿放电,形成接地短路故障。提出了预防此类事故的防范措施。
【Abstract】This paper analyzes internal discharge process of the incident of 220kV GIS: in the interior of bellows, legacy metal particles, dust, burrs on the bellows, and other foreign bodies make the surface electric field to become more uneven. Under the influence of the overvoltage, the end of basin-type insulator static contact shield cover and conductive bar discharge or breakdown to the inner wall of bellow, forming a ground short circuit fault. Then this paper proposes some preventive measures to prevent such accidents.
【关键词】GIS;盆式绝缘子;电弧放电;碳化;波纹管
【Keywords】GIS; basin-type insulator; arc discharge; carbonization; bellow
【作者】智勇军 | :平顶山供电公司,河南 平顶山,467001 |
史景忠 | :平顶山供电公司,河南 平顶山,467001 |
蒋延磊 | :平顶山供电公司,河南 平顶山,467001 |
Zhi Yongjun | : Pingdingshan Electric Power Company, Pingdingshan Henan, 467001, China |
Shi Jingzhong | : Pingdingshan Electric Power Company, Pingdingshan Henan, 467001, China |
Jiang Yanlei | : Pingdingshan Electric Power Company, Pingdingshan Henan, 467001, China |
【来源】2015年中国电机工程学会年会
【出版时间】Tue Nov 17 08:00:00 CST 2015
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