电测与仪表2017，Vol.54Issue(18)：15-21,7.
一种不受波速影响的T型输电线路故障定位方法
Fault location approach for teed transmission line independent of wave speed
摘要
Abstract
The uncertainty of traveling wave speed always causes big deviations to the fault location.In order to conquer the influence of traveling wave speed on transmission line fault location, a new method of fault location independent of wave speed by using three measurement points was presented in this paper.The method contains two main parts:the establish-ment of the identification matrix for the faulty section and fault point location.Firstly, the arrival times of the initial fault traveling waves are used to form the identification matrix for the faulty section, and the faulty section can be identified ac-cording to characteristics of element in the formed identification matrix, and the matrix avoids the influence of wave speed;Secondly, a new locating algorithm without influence of wave speed is derived based on the principle of double-end trave-ling wave fault location.The simulation results show that the arrival time of initial fault traveling wave can be detected ac-curately, and then, the faulty section and the fault point can be located exactly by using the method proposed by this pa-per.And the method is unsusceptible to wave speed, fault type, transition resistance.关键词
T型输电线路/行波/故障定位/小波变换/波速Key words
teed transmission line/traveling waves/fault location/wavelet transform/wave speed分类
信息技术与安全科学引用本文复制引用
崔超奇,王占山,杨东升,程亚航..一种不受波速影响的T型输电线路故障定位方法[J].电测与仪表,2017,54(18):15-21,7.基金项目
国家自然科学基金资助项目(61473070,61433004) （61473070,61433004）
