中文摘要：

快速傅里叶变换（FFT）应用于谐波分析与测量时容易因频谱泄漏影响测量准确度。研究Rife—Vincent窗的旁瓣特性，提出了一种基于Rife—Vincent窗频谱相位差校正的谐波分析与谐波功率测量方法。在此基础上设计了一种新型三相谐波电能表，给出了基于TDK6513H＋ADSP-BF533＋M30624FGPFP的多CPU电力谐波精确测量解决方案。实验结果表明，应用所提出的谐波分析算法时，仪器的性能优于GB／T17833-1999及GB／T14549—1993的要求，基波有功功率测量误差小于0．2％，谐波电压测量相对误差小于1％，谐波电流测量相对误差小于3％，谐波相位测量误差绝对值小于2°，适合于高精度谐波功率测量。

英文摘要：

When using the fast Fourier transform （FFT） for harmonic analysis and measurement, the measuring accuracy is apt to get affected owing to the spectral leakage The side-lobe characteristics of Rife-Vincent window are studied and a harmonic analysis and harmonic power measurement algorithm based on Rife-Vincent window phase difference correction is proposed. A new-type three-phase harmonic ammeter is designed based on a multi-CPU structure of TDK6513H ＋ ADSP-BF533 ＋ M30624FGPFP, which can accurately measure the electrical harmonic power. Experimental metering outcome indicates that the instrument performance based on the proposed algorithm conforms with the requirements mentioned in GB/T 17833-1999 and GB/T 14549-1993, the errors of the fundamental active power measurement are less than 0.2%, and for the harmonic measurement, errors of amplitudes of harmonic voltage and current in each order are less than 1%, 3%, respectively, the errors of phase difference are less than 2°. The ammeter is suitable for high precision harmonic power measurement.