电力系统保护与控制2011，Vol.39Issue(6)：29-33,5.
电网间谐波分析的包络分解法
Envelope decomposition-based method for interharmonics analysis in power system
摘要
Abstract
Based on the mechanism of interhamonics producing, a new algorithm, named envelope decomposition-based method, for interharmonic analysis of power system is presented. The proposed method is mainly based on the two points that power frequency signal containing interharmonics must be non-stationary; interharmonics parameters must be restored from the envelope of the power frequency signal. The key steps are that extracting the envelope from power frequency signal, then decomposing the envelope and finally calculating frequency and amplitude of each-order's interharmonic based on specific formula. The fake interharmonics caused by the spectral leakage of integral harmonics are avoided. MATLAB simulation verifies that the method is more accurate for interharmonics analysis in the real network.关键词
谐波分析/间谐波/非平稳信号/包络/频谱泄漏Key words
hannonic analysis/ interharmonic/ non-stationarysignal/ envelope/ spectral leakage分类
信息技术与安全科学引用本文复制引用
王柏林,熊杰锋..电网间谐波分析的包络分解法[J].电力系统保护与控制,2011,39(6):29-33,5.基金项目
江苏省2005年科技攻关计划项目(BE2005064) （BE2005064）
江苏省高校自然科学基金资助项目(08kjd470002) （08kjd470002）
江苏省2009创新基金"模块的研发"(BC2009241) （BC2009241）
