Transitory Harmonic Analysis Using Harmonic Distribution Map

Wavelet packet transform (WPT) is established on the basis of Discrete WT, it has good time-frequency localization character and can be used to divide the spectrum of signals into uniform sub bands. Therefore, it has good performance for transitory harmonic analysis. This paper analyzes the implementation of WPT, and presents a method of harmonic distribution map based on the improved implementation of WPT for transitory harmonic analysis. Theoretical deduction and simulation results validate that harmonic distribution map has good performance for harmonic analysis. Therefore, presenting a good tool for harmonic analysis in power system.