The Application of Dynamic Voltage Restorers (Dvr) On Power Distribution Systems For Mitigation Of Voltage Sags / Swells

This project presents voltage sag/swell mitigation device in electric power distribution networks.Voltage sag/swell is one of the most important power quality problems challenging the utility industry.Voltage sag/swell can be compensated for voltage and power injection into distribution system.The DVR is the excellent device for dynamic responses.A new topology based on Z-source inverter is presented in order to enhance the voltage restoration property of DVR.The derived controllers are based on a suitable stabilizing damping injection scheme.The modeling of Z-source based DVR is carried out component wise and their performances are analyzed using MATLAB software.The simulation shows that the control technique is very effective and yields excellent compensation for voltage sag/swell mitigation. I.