Analysis and Mitigation of Power Quality Issues in Distributed Generation Systems Using Custom Power Devices

Abstract

This paper discusses the power quality issues for distributed generation systems based on renewable energy sources such as solar and wind energy. A thorough discussion about power quality issues is conducted here. The paper starts with power quality issues, followed by discussions of basic standards. A comprehensive study of power quality in power systems, including the systems with DC as well as renewable sources is done in this work. Power quality monitoring techniques and possible solutions of power quality issues for power systems are elaborately studied. Then we analyze the methods of mitigation of these problems using custom power devices such as D-STATCOM, UPQC, UPS, TVSS, DVR etc. for micro grid systems. For renewable energy systems, STATCOM can be a potential choice due to its several advantages, whereas spinning reserve can enhance the power quality in traditional systems. Lastly, we study the power quality in DC systems. Simpler arrangement and higher reliability are two main advantages of DC systems though it faces other power quality issues such as instability and poor detection of faults.