A laboratory for time-frequency analysis of power quality disturbances using wavelets

Author

De Apraiz, Matilde ; Barros, Julio ; Diego, Ramón I.

Author_Institution

Dept. of Electron. & Comput., Univ. of Cantabria, Santander, Spain

fYear

2010

fDate

26-29 Sept. 2010

Firstpage

1

Lastpage

5

Abstract

This paper presents a laboratory for time-frequency analysis of power quality disturbances using wavelets. Wavelet-packet transform is applied to simulated or real disturbance records previously recorded by power quality monitoring equipment using different mother wavelet function, sampling frequency and different wavelet decomposition trees, computing the magnitude, mean and standard deviation, number of peaks, energy or entropy of the output coefficients at different resolution levels for extraction of the distinctive features of power quality disturbances.

Keywords

power supply quality; time-frequency analysis; trees (mathematics); wavelet transforms; feature extraction; mother wavelet function; power quality disturbances; power quality monitoring equipment; sampling frequency; time-frequency analysis; wavelet decomposition trees; wavelet-packet transform; Feature extraction; Instruments; Power quality; Transient analysis; Wavelet analysis; Wavelet packets; Feature extraction; Power quality; Wavelets;

fLanguage

English

Publisher

ieee

Conference_Titel

Harmonics and Quality of Power (ICHQP), 2010 14th International Conference on

Conference_Location

Bergamo

Print_ISBN

978-1-4244-7244-4

Electronic_ISBN

978-1-4244-7245-1

Type

conf

DOI

10.1109/ICHQP.2010.5625370

Filename

5625370