东北电力技术2024，Vol.45Issue(11)：46-49,4.
220kV GIS母线电压互感器放电故障分析
Discharge Fault Analysis of 220 kV GIS Bus TV
王政 1郭峰 1樊达 1杨锟 1杨洋1
作者信息
- 1. 国网滨州供电公司,山东 滨州 256600
- 折叠
摘要
Abstract
It introduces a fault of bus tripping caused by GIS bus TV discharge.Through the voltage fluctuation of the bus before the fault,it preliminarily judges that the TV has abnormal turn or layer insulation before tripping.Further test and analysis of the TV shows that the fault is caused by short circuit between inter-turns or inter-layers in the coil of the TV.The heat generated by the short-circuit current causes the interlayer film and the paint film of the enamelled wire to melt.The short-circuit scope gradually expands to the primary coil grounding screen,and finally leads to the discharge of the internal wire of the coil to the primary coil grounding screen,resulting in bus trip.In view of this fault proposed preventive measures to ensure the safety and stability of the power grid.关键词
GIS/电压互感器/放电/故障分析Key words
GIS/TV/discharge/fault analysis分类
信息技术与安全科学引用本文复制引用
王政,郭峰,樊达,杨锟,杨洋..220kV GIS母线电压互感器放电故障分析[J].东北电力技术,2024,45(11):46-49,4.
