某500kV紧凑型线路的带电作业可行性研究  

Feasibility Research of Live Working on 500 kV Compact Line

作　　者：李超[1] 胡毅[2] 李景禄[1] 王力农[2] 刘凯[2] 邵瑰玮[2] 郑传广[2] 陶蓉[1] 

机构地区：[1]长沙理工大学,湖南长沙410076 [2]国网武汉高压研究院,湖北武汉430074

出　　处：《高压电器》2008年第2期160-164,共5页High Voltage Apparatus

摘　　要：500 kV紧凑型线路带电作业的难点是确定最小安全距离。为了解决这个问题,对GB/T 19185-2003《交流线路带电作业安全距离计算方法》进行了研究,同时根据某具体线路的实际情况,通过计算和试验相结合的方式,用实际带电作业危险率来判断带电作业安全性,由危险率小于1×10-5的要求得出带电作业最小安全距离,校核出该500 kV紧凑型线路直线塔最小相地距离和相间距离分别为2.6 m和4.5 m,转角塔和终端塔最小相地距离和相间距离分别为2.7 m和4.5 m,最后根据该线路塔型的实际尺寸对带电作业进行了安全可行性校核。研究表明在该线路中带电作业安全可行。The major problem of live working on 500 kV compact line is to determine the minimum approach distance. To solve the problem, this paper analyzed GB/T 19185-2003 ＂The Computational Method on the Approach Distance of AC Circuit Living Work＂, judged the reliability of live working with dangerous rate of real live working through calculation and experiment based on a real case. According to the requirement that dangerous rate should be less than 1×10^-5, the approach distance can be calculated, hence the minimum phase-ground distance and phase spacing of the linear tower of 500 kV compact line are respectively achieved as 2.6 m and 4.5 m, and the minimum phase-ground distance and phase spacing of the angle tower and terminal tower as respective 2.7 m and 4.5 m. Finally the security and feasibility of live working was checked based on the real size of the line tower. The research illustrates that live working is safe and feasible on this line.

关 键 词：紧凑型 带电作业 安全距离 危险率 

分 类 号：TM75[电气工程—电力系统及自动化]