基于同步压缩小波法的行波故障测距应用研究

Application of Traveling Wave Fault Location Based on Synchronous Compression Wavelet Method

同步压缩小波变换(Synchrosqueezing Wavelet Transform,SWT)属于一种时频重排算法。SWT利用连续小波变换后信号时频域中相位的特点,求取各尺度下对应的频率,然后将同一频率下的尺度相加。相较于传统连续小波变换方法,SWT具有更高的分辨率。

Synchrosqueezing Wavelet Transform SWT is a kind of time-frequency reassignment algorithm, but the algorithm is different from the original rearrangement. SWT principle is based on continuous wavelet transform in the frequency domain phase characteristics of the signal, for each scale, the corresponding frequency, then sum scale of the same frequency. Compared with the traditional wavelet transform it has higher resolution.