A new Phasor Measurement Algorithm for Distribution Network Based on Interpolation Theory
Due to the existence of abundant harmonic source and frequency deviation in distribution network,the accurate phasor result cant be obtained by conventional Discrete Fourier Transform (DFT) algorithm.In this paper,by using the linear interpolation to modify DFT window length to exactly equal to the fundamental period of signal waveform,the spectrum leakage could be solved.In addition,the duplicated Simpson formula can accomplish Fourier coefficient equivalence for improving precision,so we can get the precise phasor measurement result by comprehensive utilization of above two interpolation in distribution network.The measuring accuracy and noise immunity comparison between the proposed and corrected DFT algorithm is made by MATLAB simulation.
phasor measurement interpolation theory distribution network noise immunity total vector error (TVE)
Xiao-xian Liu Wei-nong Wu Yan-jie Liao
Chongqing Power Information & Communication Branch Company,401123,China State Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing
国际会议
上海
英文
1-4
2012-09-05（万方平台首次上网日期，不代表论文的发表时间）