SIGNAL SWING NORM AS A MEASURE OF ELECTRICAL ENERGY QUALITY

A. Bien

Abstract

Stability of root mean square (rms) voltage is one of more important parameters of electrical energy quality. To evaluate the stability - rather unstability of rms voltage- we use a flickermeter which determine the flickering severity factor <i>P</i>_ST. Flickermeter is such an instrument in which reaction of electrical power is modelled by source of light onto human psychophysical features. The obtained signal is statistically analysed. As a result we obtain value <i>P</i>_ST which is a measure of electrical energy quality. After statistical treatment of the signal we obtain the value of parameter <i>P</i>_ST which is a measure of electrical energy quality.<BR />Functional of signal swing instead of statistical treatment is suggested to measure unstability of model signal. Functional of signal swing can be used for determined signals e.g. test signals, changes appearing in isolated cases (unit number of appearances in a certain time interval) and signals with statistical properties.The feature enables better interpretation of measuring results. The results obtained by a signal swing functional have properties similar to <i>P</i>_ST.

Keywords

flickermeter, swing norm

Download

IMEKO-WC-2000-TC4-P113.pdf

DOI

-

IMEKO TC

TC4 - Measurement of Electrical Quantities

Back to the proceedings