计算机工程与应用2016，Vol.52Issue(14)：50-53,61,5.DOI:10.3778/j.issn.1002-8331.1409-0166
基于提升小波变换的在线谐波检测
Research of online harmonic detection based on lifting wavelet transform
摘要
Abstract
For the problems that large computation, no real-time and low precision results using traditional threshold func-tion detection when wavelet transform is applied to harmonic detection, a new online harmonic detection method is proposed in this paper, which applies lifting wavelet to signal sequence to deal with data processing of the new threshold function, while at the same time tracking harmonic current signals dynamically using sliding time window to achieve the online testing. To test harmonic detection capability of this method when non-linear load current is generated mutation, simulation model of the shunt active power filter is built up. Simulation result verifies that the online harmonic detection not only can separate the current component of fundamental wave and harmonic wave accurately, but also has better rapidity, real-time and accuracy.关键词
并联型有源电力滤波器(SAPF)/在线谐波检测/提升小波变换/滑动时间窗/阈值函数Key words
Shunt Active Power Filter(SAPF)/online harmonic detection/lifting wavelet transform/sliding time window/threshold function分类
信息技术与安全科学引用本文复制引用
陆建龙,魏建勋,黄辉先,彭一芯,方鑫..基于提升小波变换的在线谐波检测[J].计算机工程与应用,2016,52(14):50-53,61,5.基金项目
湖南省教育厅重点项目（No.12A136）。 （）
