HHT Based on the LS-SVM and Its Application in the Voltage Flicker and Harmonic Detection of Microgrid
Microgrid contains many distributed resources (DR),such as photovoltaic,wind power,and these DR which have the characteristics of random,volatility and intermittent,will cause voltage fluctuation and flicker,therefore,harmonic pollution will be produced from power electronic devices in DR.Hilbert-Huang Transform (HHT) can distill these disturbing signals automatically and time-frequency spectrum can be obtained.However,in the application of this method there are serious end effects that mixed mode phenomenon will appear,affecting the detecting results.In order to suppress the end effects,a novel HHT based on Least Squares Support Vector Machine (LS-SVM) is applied to analyze voltage flicker and harmonic in microgrid.The results show that the improved HHT method is effective to control the end effects and the time,frequency and amplitude of disturbing signal will be detected quickly and effectively.
microgrid:HHT:LS-SVM:voltage flicker harmonic
Peng Li Liqiang Fei Peng Xi Jinxing Jie Jianmin Zhang
School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003 School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003 Jilin Electric Power Company Limited Electric Power Research Institute,Changchun 130021,China Hangzhou Dianzi University,Hangzhou 310018,China
国际会议
威海
英文
1722-1726
2011-07-06（万方平台首次上网日期，不代表论文的发表时间）