高维三迭代算法对输电线路故障的定位分析

Fault Location Analysis of Transmission Line Based on High Dimensional Three Iteration Algorithm

针对输电线路故障定位不准的问题,提出一种高维三迭代算法。该算法利用快速傅里叶变换(Fast Fourier Transformation,FFT)、跨组放大器(Transimpedance Amplifier,TIA)等方法,对线路中任意两点间频率的异常变化进行判断,来确定输电线路故障的位置。结果显示,高维三迭代算法能实现500 kV输电线路故障的精准定位,精度在95%~98%之间,显著优于FFT、最高电压等已有算法,适合输电线路的故障定位。

Aiming at the problem of inaccurate fault location of transmission lines,a high-dimensional threeiterative algorithm is proposed.The algorithm uses Fast Fourier Transformation(FFT),Transform Amplifier(TIA)and other methods to judge the abnormal frequency changes between any two points in the transmission line,so as to determine the fault location of the transmission line.The results show that the high-dimensional three-iterative algorithm can achieve accurate fault location of 500 kV transmission lines,with an accuracy of 95%~98%,which is significantly better than existing algorithms such as FFT and maximum voltage,and is suitable for fault location of transmission lines.