Title :
Analyzing fault-induced transients with wavelets
Author :
Wang, Xiaoru ; Qian, Qingquan ; Chen, Weirong
Author_Institution :
Inst. of Railway Electrification & Autom., Southwest Jiaotong Univ., Sichuan, China
Abstract :
The physical interpretation of wavelet transform is presented in this paper by comparing its band pass filter properties with that of short time Fourier transform. The fault signal on a practical 500 kV power system as generated by EMTP is analyzed with Morlet wavelets. It is shown that wavelets with automatically adjusted time windows can be used to capture and analyze fault-induced transients from frequency bands, which will be significant for a better fault detection.
Keywords :
EMTP; Fourier transforms; fault diagnosis; power system faults; power system transients; signal processing; wavelet transforms; 500 kV; EMTP; Morlet wavelets; automatically adjusted time windows; band pass filter properties; fault signal; fault-induced transients; fault-induced transients analysis; frequency bands; power system; short time Fourier transform; signal processing; wavelet transform; Band pass filters; Fourier transforms; Power generation; Power system analysis computing; Power system faults; Power system transients; Signal generators; Transient analysis; Wavelet analysis; Wavelet transforms;
Conference_Titel :
Power Engineering Society Summer Meeting, 2002 IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-7518-1
DOI :
10.1109/PESS.2002.1043430
