摘要
首先介绍了相量测量及其标准,然后简单描述了DFT和递归DFT算法。电网的频率往往是波动的,使采样很难做到对被测信号进行整周期截断,FFT算法的栅栏效应和泄漏现象将会导致较大的测量误差[8]。讨论了几种常用的减小误差的方法,最后说明了相量误差校正的现实性和重要性。
This paper introduces the measurement and the standard of phasor measurement, and then presents DFT and recursive DFT algrithm generally. The frequency of the grid is always fluctuating, which makes the sampling signals non-synchronous. And the railing effect and leakage of FFT algorithm will result in obvious measurement errors.This paper discusses several methods of diminishing several measurement errors, and indicates the feasibility and fundamentality of error correction for phasor measurement in a conclusion.
出处
《继电器》
CSCD
北大核心
2004年第10期80-84,共5页
Relay
