Title :
Measurement and prediction of voltage flicker magnitude and frequency
Author :
Girgis, Adly A. ; Stephens, John W. ; Makram, Elham B.
Author_Institution :
Electric Power Res. Association, Clemson Univ., SC, USA
fDate :
7/1/1995 12:00:00 AM
Abstract :
Voltage flicker refers to a slow-0.5 to 30 Hz-modulation of the power system voltage magnitude. This periodic fluctuation can be modelled as an amplitude modulated signal, where the fundamental power frequency represents the carrier signal and the voltage flicker represents the modulating signal. An algorithm based on this premise is developed to estimate the instantaneous magnitude and frequency of the voltage flicker. The algorithm, which is based on Kalman filter estimation, can also be used to predict the instantaneous flicker level
Keywords :
Kalman filters; amplitude modulation; filtering theory; measurement theory; power system harmonics; power system measurement; 0.5 to 30 Hz; Kalman filter estimation; algorithm; amplitude modulated signal; carrier signal; frequency; fundamental power frequency; magnitude; measurement; modulating signal; periodic fluctuation; power system; prediction; voltage flicker; Amplitude modulation; Electrodes; Filtering; Filters; Frequency estimation; Frequency measurement; Furnaces; Power system harmonics; Refining; Voltage fluctuations;
Journal_Title :
Power Delivery, IEEE Transactions on
