电网技术2016，Vol.40Issue(8)：2496-2502,7.DOI:10.13335/j.1000-3673.pst.2016.08.036
基于全相位谱细化与校正的谐波和间谐波测量方法
Method of Harmonics and Interharmonics Measurement Based on All-Phase Spectrum Zoom and Correction
摘要
Abstract
When frequency of harmonics is near to that of interharmonics,serious interference from main lobe will affect precise parameter estimation of harmonics and interharmonics.By comprehensive utilization of all-phase FFT,spectrum correction and spectrum zoom technology,a new method was proposed in this paper to analyze harmonics and interharmonics even in dense frequency bands.First,electric signals were analyzed with all-phase FFT phase difference correction algorithm to get parameters of harmonic and interharmonic components.Then flatness characteristics of all-phase FFT phase spectrum were used to distinguish whether electric signals contained dense spectrum components,and determine frequency range of dense spectrum.At last,spectrum zoom analysis was carried out and harmonic and interharmonic parameters in dense spectrum range were obtained.With moderate calculation burden,the proposed method could precisely estimate frequencies,amplitudes and phases of all frequency components,including harmonics and interharmonics in dense frequency bands.Simulation results verified effectiveness of the proposed method.关键词
谐波/间谐波/全相位FFT/频谱校正/频谱细化Key words
harmonics/interharmonics/all-phase FFT/spectrum correction/spectrum zoom分类
信息技术与安全科学引用本文复制引用
邹培源,黄纯,江辉,周迭辉..基于全相位谱细化与校正的谐波和间谐波测量方法[J].电网技术,2016,40(8):2496-2502,7.基金项目
国家863高技术基金项目(2011AA05A114) （2011AA05A114）
深圳市基础研究计划(JCYJ20140418193546100).The National High Technology Research and Development of China (863 Programme) (2011AA05A114) （JCYJ20140418193546100）
Shenzhen Basic Research Project (JCYJ20140418193546100). （JCYJ20140418193546100）
