电测与仪表2017，Vol.54Issue(21)：1-6,41,7.
基于四阶Hanning自乘窗FFT三峰插值的电能计量新算法
A new algorithm for electric energy measurement based on four-order Hanning self-multiplication window triple-spectrum-line interpolation FFT
摘要
Abstract
In order to further improve the calculation accuracy of the windowed interpolation algorithm,this paper pro-poses a new five-terms cosine window function,four-order Hanning self-multiplication window function,based on this, window function and three spectral lines interpolation correction formula,the general amplitude,phase and frequency interpolation correction formula are derived.We can extract the amplitude,phase and frequency parameters of funda-mental wave and harmonic in the measured voltage and current signal by these general interpolation formulas, and then,we can calculate the electric energy of fundamental wave and harmonic accurately.The simulation results show that,because of the window function has better main lobe and side lobe performance,which can effectively suppress the influence of spectrum leakage and fence effect,so based on this window function,the new algorithm for computing electric energy has higher accuracy.关键词
四阶Hanning自乘窗函数/三峰谱线插值/谐波/电能计量/修正公式Key words
four-order Hanning self-multiplication window function/triple-spectrum-line interpolation/harmonic/e-lectric energy measurement/correction formula分类
信息技术与安全科学引用本文复制引用
刘涛,庄双勇,陈晓伟,赵伟,张之涵,黄松岭..基于四阶Hanning自乘窗FFT三峰插值的电能计量新算法[J].电测与仪表,2017,54(21):1-6,41,7.基金项目
国家863计划项目(2015AA050404) （2015AA050404）
