小波变换在电压闪变信号中的检测分析

Detection and analysis of wavelet transform in voltage flicker signal

为了实现对电力系统中电压闪变信号更为精确地检测,提出了小波变换的多分辨率分析的原理。由于小波变换具有较好的时频局部化特性,进而提取出电压闪变信号中的频率和幅值等参数。最后通过MATLAB仿真证明小波变换是一种更为有效的电压闪变分析方法。

In order to more accurately detect the power system voltage flicker signal, ,this paper proposes the principles of multi-resolution wavelet analysis. Wavelet transform has good time-frequency localization properties and then extract the voltage flicker signal parameters such as frequency and amplitude. Finally through MATLAB simulation, it is proved that the wavelet transform is more effective in analysis of voltage flicker.