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

fYear

2010

fDate

22-24 Sept. 2010

Firstpage

70

Lastpage

73

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Measurements For Power Systems (AMPS), 2010 IEEE International Workshop on

Conference_Location

Aachen

Print_ISBN

978-1-4244-7372-4

Type

conf

DOI

10.1109/AMPS.2010.5609519

Filename

5609519