Power quality issues related to new means of distributed generation and loads

DURING the last two decades, PQ related problems have increased all over the world. The uses of electronic appliances, computers, data processing equipments, variable speed drives, electronic ballasts, etc. have increased enormously. These devices are quite vulnerable to supply voltage disturbances. In contrast, they produce current emissions in the network because of their non-linear operating characteristics and in this way influence the quality of the network voltage.