document: Comparison between discrete STFT and wavelets for the analysis of power quality events This paper deals with the comparison of signal processing tools for power quality analysis . Two signal processing techniques are considered : the wavelet filters and the discrete short-time Fourier transforms -LRB- STFT -RRB- . Then , examples of the two most frequent disturbances met in the power system are chosen . An adjustable speed drive with a six-pulse converter using EMTP/ATP is designed and normal energizing of utility capacitors is presented . The analysis is tested on a system consisting of 13 buses and is representative of a medium-sized industrial plant . Finally , each kind of electrical disturbance is analyzed with examples representing each tool . A qualitative comparison of results shows the advantages and drawbacks of each signal processing technique applied to power quality analysis
doc_bio_tags: O O B I O B O O O O B I I O O O O O O O B I I O O O O O O B I I O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I I O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O
extractive_keyphrases: discrete stft wavelets power quality events signal processing tools signal processing techniques wavelet filters adjustable speed drive utility capacitors electrical disturbance
abstractive_keyphrases: discrete short-time fourier transforms six-pulse converter emtp/atp medium-sized industrial plant short-time fourier transforms