Practical Aspects of Performance Tests on Power Quality Analyzers

Abstract

This paper aims to provide analysis for qualification and quantification of causes related to results deviations in relation to a default value eventually recorded by power quality analyzers while the calibration tests are performed by the Power Quality Group of the Federal University of Uberlândia. Specifically, it is shown the method effects for calculating the RMS voltage while the time and short-duration voltage variations amplitude are quantified. Additionally, it is presented the differences between the various methods available to quantify the voltage unbalances, as well as the impacts due to different methods of calculating the RMS average recorded by the power quality analyzer.