Power Quality Improvement in Distribution System Using D-Statcom

This thesis aims to about the performance of D-STATCOM, to mitigate voltage sag hence Improve the power quality of the power system. Various loads like Starting of induction motor, Transient fault& Arc furnace will create Voltage sag in the power system, by using D-STATCOM, connected at the point of common Coupling we can provide the compensation &mitigate the sag. A power quality problem is an occurrence manifested as a nonstandard voltage, current or frequency that results in a failure or malfunction of the equipment at user-end, Utility distribution networks, sensitive industrial loads & critical commercial operations suffer from various types of outage & service interruption, which can cost significant financial losses. Due to advancement in power electronic technology, usage of Converter, Inverter, SMPS, UPS is increased exponentially, which are nonlinear loads &increased Harmonics distortion in system.