Improving Power Quality in Distribution Systems Using UPQC: An Overview
Ahmed Yahya Qasim, Fadhil Rahma Tahir, Ahmed Nasser B. Alsammak
Abstract
Enhancing power quality (PQ) using the Unified Power Quality Conditioner (UPQC) is the focus of this article's research review.There has been a dramatic increase in the use of non-linear and electronically switched devices in distribution lines and industries, which makes PQ issues important.Distribution Flexible AC Transmission Systems (DFACTSs) are a novel idea developed to improve the performance of the distribution system.One of the DFACTSs is the UPQC.The design of this UPQC aims to resolve various PQ problems, such as voltage sag/swell, single-phase and three-phase failures, voltage flicker, compensation of current/voltage harmonics, reactive power demand of the load, and compensation of unbalanced loads.It is possible to build the UPQC to protect sensitive loads that are located inside the distribution system and to prevent any distortion from coming from the load side.This study presents a comprehensive analysis of the different configurations of UPQC systems for single-phase and three-phase applications.The UPQC is categorized based on factors such as voltage sag compensation, supply system, converter topology, and system configuration.According to its function, topology, and application, many researchers have given the UPQC several various names, like Multi-Converter UPQC (UPQC-MC), Interlined UPQC (UPQC-I), Distributed Generator UPQC (UPQC-DG), Right Shunt UPQC (UPQC-R), etc.This study is meant to provide a detailed overview of the many possible UPQC system formations.