电工技术学报2017，Vol.32Issue(6)：14-20,7.
同步挤压小波变换在电力系统低频振荡模态参数提取中的应用
Application of Synchrosqueezed Wavelet Transform for Extraction of the Oscillatory Parameters of Low Frequency Oscillation in Power Systems
摘要
Abstract
For the non-stationary and nonlinear characteristics of low frequency oscillation in power system, a new time-frequency analysis method, namely synchrosqueezed wavelet transform (SWT), is used in the analysis of low frequency oscillation. The method overcomes the disadvantage of poor noise immunity, which is the drawback of most analysis methods. At the same time, it combines the advantages of empirical mode decomposition (EMD) and wavelet, which has the adaptability of EMD, and improves the ability of anti mode mixing based on EMD and wavelet. The SWT algorithm can be used to realize the separation of the low frequency oscillation mode with a single frequency component, and the instantaneous amplitude and frequency are obtained,then the damping ratio is calculated. Simulation and measured data results show that the SWT is effective and stronger than the traditional HHT method.关键词
同步挤压小波变换/低频振荡/希尔伯特-黄变换/瞬时参数Key words
Synchrosqueezed wavelet transform/low frequency oscillation/Hilbert-Huang transform/instantaneous parameters分类
信息技术与安全科学引用本文复制引用
喻敏,王斌,陈绪轩,王文波,金吉..同步挤压小波变换在电力系统低频振荡模态参数提取中的应用[J].电工技术学报,2017,32(6):14-20,7.基金项目
国家自然科学基金资助项目(61471275、51407131、61671338). （61471275、51407131、61671338）
