Title :
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
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;
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
DOI :
10.1109/ICHQP.2010.5625370
