Analysis of Harmonic Current Propagation in Industrial Sectorin Function of the Load Level

Abstract

This article presents the influence of the loadlevel variation in the power quality. The study it is based on apunctual audit, made to a group of loads in a cement industry,with experimental data acquired by monitoring equipment.Quality indexes of Power Energy Industrial System aredetermined for different points of the network, such as points ofcommon coupling, disturbing load points, linear load points andreactive energy compensation points. The monitored data areanalyzed, according to the patterns of the IEEE 519-1992standard. Using audit results along with system data, a PowerEnergy Industrial System simulation model is developed inMATLAB®/SIMULINK®. This model is then used to extrapolatethe Harmonic Distortion Propagation at the industry plant, forother load levels apart from the monitored ones. Theinformation related to Harmonic Distortion Propagation fordifferent load levels is used to strengthen the conclusions ofPower Energy Industrial System audits.