计算机与数字工程2023，Vol.51Issue(10)：2224-2230,2262,8.DOI:10.3969/j.issn.1672-9722.2023.10.002
基于经验小波变换的畸变信号电量计量研究
Research on Electric Quantity Measurement of the Distorted Signal Based on Empirical Wavelet Transform
摘要
Abstract
With the extensive use of nonlinear loads in the power grid,the power grid signals are seriously distorted,and many problems are exposed in the traditional electricity measurement methods.Aiming at the electricity metering of non-stationary distorted signals in power grid,a new electricity metering method based on empirical wavelet transform is proposed,which can avoid the mode mixing phenomenon of empirical mode decomposition to a great extent.The typical steady-state and time-varying current and voltage waveforms are constructed.The empirical wavelet transform method is used to decompose and reconstructs the fundamental component,and the distortion component,respectively,and the distorted signal power is calculated.Compared with the empirical mode decomposition method and wavelet transform method,the empirical wavelet transform method has a robust adap-tive ability,accurate harmonic decomposition,a high degree of distortion signal reduction,and a small relative error of power mea-surement.It has a significant advantage in the field of electric power measurement.关键词
经验小波变换/小波变换/经验模态分解/非线性负荷/畸变信号/电量计量Key words
empirical wavelet transform/wavelet transform/empirical mode decomposition/nonlinear load/distorted sig-nal/electricity metering分类
信息技术与安全科学引用本文复制引用
冯昆,徐天奇,李琰,王兴明,朱梦梦..基于经验小波变换的畸变信号电量计量研究[J].计算机与数字工程,2023,51(10):2224-2230,2262,8.基金项目
国家自然科学基金项目(编号:62062068,61761049)资助. （编号:62062068,61761049）
