电网技术2012，Vol.36Issue(2)：64-69,6.
基于改进复调制细化法和加窗插值快速傅里叶变换的电力系统谐波分析
Power System Harmonic Analysis Method Based on Modified Multiple Modulation Zoom Analysis and Windowed Interpolation FFT
摘要
Abstract
Along with the utilization of lots of power electronics equipments, more and more harmonics and inter-harmonics occur in power system, however when the analyzed signal contains components with frequencies close to each other, precise analysis couldn＇t be made by traditional harmonics analysis methods such as windowed interpolation FFT method. A new method, namely multiple modulation zoom analysis based on complex analytic band-pass filter, is adopted to make accurate analysis to this kind of components, and then the remaining components are also analyzed by windowed interpolation FFT. Simulation results of the proposed method show that comparing with the results from directly using windowed interpolation FFT, the harmonic contents with frequencies close to each other can be the proposed method can recognized with higher frequency resolution.关键词
谐波/加窗插值快速傅里叶变换/复调制细化法/复解析带通滤波器Key words
harmonics/multiple modulation zoom band-pass filter windowed interpolation FFT/analysis/complex analytic分类
信息技术与安全科学引用本文复制引用
王继东,杨官庆,文晶..基于改进复调制细化法和加窗插值快速傅里叶变换的电力系统谐波分析[J].电网技术,2012,36(2):64-69,6.基金项目
国家重点基础研究发展计划（973计划）项目 （）
国家自然科学基金项目（51007062 （）
50837001）. （）
