一种基于半波傅氏算法的继电保护快速算法

本文通过半波傅氏算法的实部与Ｍａｎｎ－Ｍｏｒｒｉｓｏｎ算法的组合，提出了一个快速的保护算法。该算法的数据窗是半个周波加两个采样点，而其滤波效果却大大优于半波傅氏算法。此算法能较大地消除非周期分量对基波分量的影响。其程序与计算非常简单。已用电磁暂态仿真程序ＥＭＴＰ进行了大量仿真实验，验证了此算法的优良性能。

A FAST ALGORITHM BASED ON HALF-CYCLE FOURIER ALGORITHMFOR PROTECTIVE RELAYING

Combining the real part of half-cycle Fourieralgorithm with Mann-Morrison algorithm, a fast algorithmfor protective relaying of microprocessor type is proposed.Its data window is a half cycle with two sampling pointsadded, and its filtering effect of this algorithm is much better than that from the half-cycle Fourier algorithm. Withthis algorithm the influence of an exponential DC componenton the fundamental frequency component can be greatly decreased, the program and the computation are quite simple.The performance of this algorithm is proved by a lot of simulations with EMTP.