Power quality indices for aperiodic voltages and currents

Summary form only given as follows. This paper addresses the subject of transient electric power quality problems. The quantification of power quality in terms of simple indices such as total harmonic distortion and other measures is revisited in terms of the windowed Fourier transform. This transfo...

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Bibliographic Details
Main Authors: Herraiz, S., Heydt, G.T., O'Neill-Carrillo, E.
Format: Conference Proceeding
Language:English
Subjects:
Fourier transforms
Power measurement
Power quality
Power system harmonics
Steady-state
Student members
Time measurement
USA Councils
Voltage
Online Access:Request full text
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Summary:Summary form only given as follows. This paper addresses the subject of transient electric power quality problems. The quantification of power quality in terms of simple indices such as total harmonic distortion and other measures is revisited in terms of the windowed Fourier transform. This transform is a short term Fourier transform evaluated over a time window. The result is a set of new power quality indices which collapse to the familiar forms for the cases of periodic steady state, but which capture transient amplitudes for nonsteady state applications. Applications are suggested.
DOI:10.1109/PESS.2000.868715