|
|
|
| Analysis of a 220kV gas-insulated metal-enclosed switchgear busbar breakdown fault |
| Zhang Jianjun, Yue Xiaoming, Qu Shaoping, Lu Bingjun |
| CR Power Energy Science and Technology Co., Ltd, Zhengzhou 450052 |
|
|
|
|
Abstract For a 220kV gas-insulated metal-enclosed switchgear bus pillar insulator break defect, which caused the C-phase busbar conductor to fall off and discharge to the cylinder, causing the B and C phases short circuit, at last caused a three-phase short-circuit fault, leading to the action of the #2 busbar differential protection. The diagnostic test and disintegration check were carried out. According to the analysis, the process requirements of #2 busbar pillar insulators were not strictly enforced during the pouring process, the mechanical strength was reduced, it was the main reason for the accident during operation. Finally, corresponding improvement measures and suggestions were proposed.
|
|
Received: 12 March 2020
|
|
|
|
| Cite this article: |
|
Zhang Jianjun,Yue Xiaoming,Qu Shaoping等. Analysis of a 220kV gas-insulated metal-enclosed switchgear busbar breakdown fault[J]. Electrical Engineering, 2020, 21(8): 98-102.
|
|
|
|
| URL: |
|
http://dqjs.cesmedia.cn/EN/Y2020/V21/I8/98
|
[1] 罗学琛. SF6气体绝缘全封闭组合电器(GIS)[M]. 北京: 中国电力出版社, 1999.
[2] 郭雷, 张海杰, 陈仁刚, 等. 一起220kV GIS设备内部放电故障分析及处理措施[J]. 电气技术, 2016, 17(1): 127-130, 133.
[3] 侍海军, 王光前, 张少炎. GIS现场绝缘试验技术[J]. 高压电器, 2005, 41(1): 55-58.
[4] 吴光亚, 姚忠森, 何宏明, 等. 高压支柱瓷绝缘子运行事故分析[J]. 电瓷避雷器, 2002(5): 22-24, 26.
[5] 雍军, 沈庆河, 胡晓黎, 等. 浅析山东电网高压支柱瓷绝缘子断裂原因[J]. 高电压技术, 2005, 31(3): 90-91.
[6] 吴旭涛, 危鹏. 一起220kV隔离开关支柱瓷绝缘子断裂事故的原因分析[J]. 电瓷避雷器, 2011(6): 11-14, 20.
[7] 陈弘扬, 赵科, 董正杰, 等. 1100kV气体绝缘金属封闭开关设备绝缘内部气隙放电缺陷诊断分析与处理[J]. 电气技术, 2019, 20(12): 102-107.
[8] 汲胜昌, 钟理鹏, 刘凯, 等. SF6放电分解组分分析及其应用的研究现状与发展[J]. 中国电机工程学报, 2015, 35(9): 2318-2332.
[9] 唐炬, 杨东, 曾福平, 等. 基于分解组分分析的SF6设备绝缘故障诊断方法与技术的研究现状[J]. 电工技术学报, 2016, 31(20): 41-54.
[10] 王绍安, 徐华, 邹宏亮, 等. 气体绝缘金属封闭开关设备拆装系统的夹具设计及其应力分析[J]. 电气技术, 2019, 20(7): 80-83. |
|
|
|
2020, Vol. 21 
