基于Hilbert的风力发电并网电压闪变检测  

Detection of Voltage Flicker Caused by Wind Power Interconnected with Grid Based on Hilbert

作　　者：孙雯[1] 国海[1] 范智平[1] 权悦[1] 徐朝胜[1] 

机构地区：[1]安徽科技学院,安徽凤阳233100

出　　处：《重庆科技学院学报（自然科学版）》2017年第5期94-97,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：安徽省高校自然科学研究重点项目"三相-单相矩阵变换器容错控制研究"(KJ2016A170);安徽省高校自然科学研究重点项目"基于TFET的新型电荷俘获型存储器的研究"(KJ2017A502);安徽科技学院人才引进项目"微网混合储能系统的协调控制"(ZRC2014467)

摘　　要：风力发电并网引起的电压闪变,对微网的安全稳定运行有很大的影响,也是制约风力发电规模化发展的一个因素。介绍了基于Hilbert变换的电压闪变检测原理,并仿真了在单一频率、多个频率、含有高次谐波3种情况下利用Hilbert变换提取电压闪变信号的包络线,证明了Hilbert变换能够很好地检测出闪变频率。As voltage flicker caused by wind power interconnected with grid has great impacts on the stable and safety operation of grid,which is also a factor of restricting the scale development of wind power generation.This paper introduced the principles of voltage flicker detection based on Hilbert.And,the simulation research based on Hilbert was carried out to extract envelope of voltage flicker signal at three situations,such as single frequency,multiple frequencies and high harmonic.The simulation results had verified the effectiveness of detecting flicker frequency by Hilbert transform.

关 键 词：HILBERT变换 电压闪变 风力发电 MATLAB 

分 类 号：TM61[电气工程—电力系统及自动化]