500kV紧凑型线路导线非同步摆动跳闸故障分析  

Analysis of the Tripping Fault Caused by Conductor Asynchronous Swing of 500kV Compact Transmission Line

作　　者：陈刚 CHEN Gang(China Southern Power Grid EHV Transmission Corporation Baise Bureau,Baise 533000,Guangxi Province,China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司百色局,广西百色533000

出　　处：《电力安全技术》2019年第1期30-33,共4页Electric Safety Technology

摘　　要：针对500 kV某紧凑型输电线路跳闸故障情况,根据故障段线路设计、导线相间间隔棒安装、断面图等,结合当时当地天气、线路周围树木破坏、闪络点情况对故障原因进行了分析。分析结果表明,在紧凑型输电线路的大档距、微地形区域内,在恶劣天气情况下导线会出现非同步摆动,造成相间导线距离不足,从而导致输电线路跳闸。从设计、运行方面提出对策和建议,以防止同类故障的发生。This paper introduces a tripping fault of a 500kV compact transmission line,and analyzes the fault reasons according to the the design of fault line section,installation of conductor spacers,cross-sectional diagram,and considering the local weather,tree damage around the line and flashover point.The analysis results show that in the area of large spacing and micro-topography of compact transmission lines,asynchronous swing of conductors under the bad weather can result in insufficient distance between conductors,which is the reason of transmission lines tripping.It puts forward some countermeasures and suggestions from the aspects of design and operation,to prevent the occurrence of similar faults.

关 键 词：紧凑型输电线路 非同步摆动 跳闸故障 相间间隔棒 

分 类 号：TM726.1[电气工程—电力系统及自动化]