电力系统及其自动化学报2025，Vol.37Issue(5)：40-51,12.DOI:10.19635/j.cnki.csu-epsa.001514
基于EEMEMD改进的HHT方法及其在谐波检测应用中的研究
Research on Improved HHT Method Based on EEMEMD and Its Application in Harmonic Detection
摘要
Abstract
Aimed at the issues of the Hilbert-Huang transform(HHT)method when it is applied to harmonic detection such as being susceptible to noise or abrupt signal interference,which result in problems of modal aliasing,false com-ponents and endpoint effect that affect the accuracy of feature information,an improved HHT harmonic detection meth-od based on ensemble envelope mean empirical mode decomposition(EEMEMD)is proposed.First,the improved waveform matching continuation method based on Wasserstein optimization and linear weight continuation is used to preprocess the endpoint effect existing in the empirical mode decomposition(EMD)embedded in EEMEMD.Then,the EEMEMD method is used to indirectly obtain the characteristics of the intrinsic mode function(IMF)by calculating the mean value of the overall envelope,and the harmonic signal is decomposed into a series of IMF components.Finally,the feature information about the amplitude and frequency of harmonic components is extracted by Hilbert transform.Simulation and comparison results show that the improved HHT method significantly mitigates the inherent limitations of EMD and exhibits a high detection accuracy in the presence of noise or abrupt signal.关键词
谐波检测/总体包络均值经验模态分解/端点效应/希尔伯特变换Key words
harmonic detection/ensemble envelop mean empirical mode decomposition(EEMEMD)/endpoint effect/Hilbert transform分类
动力与电气工程引用本文复制引用
张展,张云鹏,杨晋,扶铸,郭浩杰..基于EEMEMD改进的HHT方法及其在谐波检测应用中的研究[J].电力系统及其自动化学报,2025,37(5):40-51,12.基金项目
河南省科技攻关计划资助项目(222102220014). （222102220014）
