Analysis of Power Quality (PQ) Signals by Continuous Wavelet Transform

Author

Basu, Malabika ; Basu, Biswajit

Author_Institution

Dublin Inst. of Technol., Dublin

fYear

2007

Firstpage

2614

Lastpage

2618

Abstract

This paper presents application of continuous wavelet transform to identify power system transients and disturbances. A mother wavelet basis function (Littlewood-Paley (L-P)) with dyadic non- overlapping frequency bands has been used. A few power signals with power quality (PQ) disturbances have been analyzed to show the effectiveness of the proposed technique. The purpose of the paper is to highlight an alternative way of PQ signal analysis, which enables to identify the duration of disturbance accurately. Classification of various power quality disturbances is also possible through this time- frequency based wavelet analysis.

Keywords

power supply quality; power system faults; wavelet transforms; continuous wavelet transform; power quality analysis; power quality signals; power system disturbances; power system transients; Continuous wavelet transforms; Frequency; Neural networks; Power quality; Power system transients; Signal analysis; Signal processing; Voltage; Wavelet analysis; Wavelet transforms; L-P basis; flat-top; power quality; saturation; spike; voltage distortion; wavelet analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2007. PESC 2007. IEEE

Conference_Location

Orlando, FL

ISSN

0275-9306

Print_ISBN

978-1-4244-0654-8

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2007.4342428

Filename

4342428