Title :
Wavelet-Based Method for Tracking Flicker Level
Author_Institution :
China Electr. Power Res. Inst., Beijing
Abstract :
A shift-invariant wavelet-based method is developed to detect the envelope of voltage flickers. It uses a linear phase complex wavelet and the quadrature signal approach in wavelet-domain, and takes a fast dyadic pyramid algorithm not a time consuming shift -invariant one. Just two smoothed wavelet transforms and one detailed wavelet transform are implemented. These make the method fast and accurate
Keywords :
flicker noise; voltage measurement; wavelet transforms; 60 ns; dyadic pyramid algorithm; linear phase complex wavelet; quadrature signal; shift invariant; voltage flickers; wavelet based method; wavelet domain; wavelet transforms; Control systems; Costs; Envelope detectors; Frequency; Kalman filters; Power system control; Power system protection; Voltage control; Voltage fluctuations; Wavelet transforms;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305616
