Title :
Measurement of voltage distortion in the frequency range 2 – 9 kHz
Author :
Barros, J. ; De Apráiz, M. ; Diego, R.I.
Author_Institution :
Dept. of Electron. & Comput., Univ. of Cantabria, Santander, Spain
Abstract :
This paper presents some of the results obtained in the measurement of voltage distortion in the frequency range 2 to 9 kHz in a low-voltage distribution network. The Discrete Fourier Transform is used for the analysis of the voltage waveform using a 200-millisecond window width and grouping in 200-Hz bands. The paper presents the time-frequency analysis of the results obtained during several days monitoring of voltage distortion, and proposes a new performance index for assessment of the distortion in this frequency range. Finally a new method, based on the use of wavelet analysis, is proposed for the assessment of the distortion in this frequency range.
Keywords :
discrete Fourier transforms; distortion measurement; distribution networks; time-frequency analysis; voltage measurement; bandwidth 200 Hz; discrete Fourier transform; frequency 2 kHz to 9 kHz; low-voltage distribution network; time 200 ms; time-frequency analysis; voltage distortion measurement; voltage distortion monitoring; voltage waveform; wavelet analysis; Discrete Fourier transforms; Distortion measurement; Harmonic distortion; Instruments; Time frequency analysis; Voltage measurement; harmonic distortion; power quality; wavelets;
Conference_Titel :
Applied Measurements For Power Systems (AMPS), 2010 IEEE International Workshop on
Conference_Location :
Aachen
Print_ISBN :
978-1-4244-7372-4
DOI :
10.1109/AMPS.2010.5609519
