电测与仪表2018，Vol.55Issue(2)：59-65,7.
基于VMD的谐波检测方法
Harmonic detection method based on VMD
陈强伟 1蔡文皓 1孙磊 1牛春光1
作者信息
- 1. 西安科技大学电气与控制工程学院,西安710054
- 折叠
摘要
Abstract
Aiming at solving the problem of harmonic detection,several traditional proposed methods have been analyzed.It was the first time that the power grid harmonic detection method based on Variational Mode Decomposition (VMD) was proposed.Electrical signals were decomposed into a series of intrinsic mode function(IMF) by using the VMD method,and then,the instantaneous frequency and instantaneous amplitude value of each IMF were gained after the transforming of IMF decomposed through Hilbert-Huang transforming(HHT).For the VMD method decomposed each IMF accurately,therefore,the instantaneous frequency and amplitude value could be obtained accurately.And after the comparison of the results of IMF gained based on empirical mode decomposition (EMD) with the results of IMF gained based on Hilbert-Huang transforming,it was proved that VMD method showed stronger decomposition ability than the traditional Hilbert transforming.In order to test the detection ability of VMD on power grid harmonics,VMD calculation and the traditional instantaneous harmonic detection were applied to practical data.Results on simulation and experimental statistics showed that the method could be regarded as an effective method to detect harmonics.关键词
变分模态分解/本征模态分量/谐波检测/经验模态分解/希尔伯特黄变换Key words
variational modal decomposition/intrinsic mode function/harmonic detection/empirical mode decomposition/Hilbert-Huang transforming分类
信息技术与安全科学引用本文复制引用
陈强伟,蔡文皓,孙磊,牛春光..基于VMD的谐波检测方法[J].电测与仪表,2018,55(2):59-65,7.
