DefinePK

Abstract

For the power quality improvement of the system FACTS devices like static synchronous compensator (STATCOM), static synchronous series compensator (SSSC), interline power flow controller (IPFC), and unified power flow controller (UPFC) etc. are introduced. These devices are used for the transmission system. But now a day’s these FACTS devices are used for distribution system and called as custom power devices. The main custom power devices which are used in distribution system for power quality improvement are distribution static synchronous compensator (DSTATCOM), dynamic voltage Restorer (DVR), active filter (AF), unified power quality conditioner (UPQC) etc. In this paper, for power quality improvement in the distribution system, DVR is used with Fuzzy logic controller. There are two different loads are considered. One is linear load and the other is nonlinear load (induction motor). With these loads different fault situations are created and DVR performances are analyzed.