Comparative Analysis of Control Strategies for Dynamic Voltage Restorer

Power quality problem is a very big problem in power system, some equipment is installed in the power system to solve it, among them dynamic voltage restaurateur is one of the best equipment. Many types of control techniques can be installed in dynamic voltage restaurateurs. Three types of control methods have been adopted in this research work. Various types of the control techniques such as PI control technique, PR control technique, and hysteresis control technology has been investigated. In this study, two major effects of power quality have been taken, which include voltage sag and voltage swell. These two power quality problems are included up to 30 percent, which is solved through all three methods. Based on the analysis of control technology, the “PI control” method is the best method for Dynamic Voltage Restorer. In this study, Designed control strategies using PI PR Hysteresis controller, with comparative analysis for the implemented for the DVR. PI PR control strategies are designed for medium-level voltage and Hysteresis control strategy design for low-level voltage.