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

Volume

3

fYear

2002

fDate

25-25 July 2002

Firstpage

1090

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society Summer Meeting, 2002 IEEE

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-7518-1

Type

conf

DOI

10.1109/PESS.2002.1043430

Filename

1043430