有效值及有功功率测量的谱泄漏对消算法

摘要

In RMS value and active power measurement of AC, The spectral leakage of harmonics on zero frequency is the main source of errors of measurement when sampling is not synchronized. Spectral leakage cancellation algorithm （SLCA） can reduce such measurement errors. theoretical analysis and numerical simulation are conducted in this paper and the results show that the algorithm can markedly improve the measurement accuracy.%在有效值及有功功率的测量中,当采样不同步时,其谐波在零频率处的频谱泄漏是测量的主要误差源。利用谱泄漏对消算法可减小这类误差,本文对此进行了理论分析和数值模拟,结果表明该算法可明显提高测量精度。