摘要
某省750 kV输电线路发生跳闸,为分析跳闸原因,从故障点周边环境、放电点特征、复合绝缘子特性参数、电场仿真计算、故障相空气间隙校核等方面进行综合分析研究,最后认为该次故障是由于塔头设计空气间隙过小,加之故障时空气潮湿和鸟类大量排便,降低了空气的绝缘强度,导致空气间隙击穿跳闸。
In this paper, reasons for a 750 kV transmission line trip are further analyzed at fault point surroundings, discharge characteristics, parameters of composite insulators, electric field simulation, fault phase air clearance check and other aspects. The results show that the failure is due to the small air gap of the tower head, wet air and a large number of bird fault defecation. Insulating strength of the air is reduced, and the air gap breakdown occurs which causes a trip.
作者
杜志强
常彬
陈泓
刘威峰
马波
张庆平
DU Zhi-qiang CHANG bin CHEN Hong LIU Wei-feng MA Bo ZHANG Qing-ping(State Grid Ningxia Electric Power Company, Yinchuan 750001, China Electric Power Research Institute, State Grid Ningxia Electric Power Company, Yinchuan 750001, China)
出处
《电工材料》
CAS
2017年第5期41-44,共4页
Electrical Engineering Materials
