Alleviation of Voltage Quality-Related Issues: A Case Study of Bahir Dar Textile Share Distribution System

This paper presents a unified power quality conditioner (UPQC)-based compensation approach for voltage quality improvement in Bahir Dar textile share company distribution system. The existing system was modeled and simulated to evaluate its performance. The base case waveform shows that power quality is deteriorating in the factory. The voltage sag and swell at the base case are 65% and 140%, respectively, with voltage unbalance and harmonic content for a duration of 0.1 s. After using the proposed fuzzy logic controller (FLC)-based UPQC, both voltage sag and swell are alleviated by 100% and the waveform is maintained and kept at 1.0 p.u.