Analysis of harmonic distortion in building electrical installation with computer devices

Abstract

This paper presents an analysis of the electrical installation in a educational facility building allowing the knowledge of its power supply quality. The work is based on data supply waveforms and PQ indexes, acquired by recent power analyser, allowing to study the voltage and current waveform distortion of this specific building, where the main load are computer devices. A set of methods and techniques to attenuate the harmonics amplitude in this type of installation is presented and discussed. It is proposed a solution for this case study, function of the total load, installation feeding and of the level of authorized distortion for the international standards. This study can provide some help in the future dimensioning and project of the electrical installation for this type of building, from the point of view of the distortion and the best localization of the problematic loads.