• Jain Shilpa Pavan
• Dr.Bhupendra R. Parekh
• Makawana Mukundkumar Manubhai

Power Quality is an issue of chief concern for distribution system. Power quality problem comprises of variation in standard current, voltage or frequency which will result in failure of equipments at the user end causing havoc to system performance. The major problems of power quality consists of sags, swell, transient, and harmonic distortions out of which the sag and swell are predominantly found. To mitigate this problem custom power devices are utilized. Amongst all , Dynamic Voltage Restorer is one of the most capable and promising device at power distribution level for voltage sag mitigation owing to its dynamic response which is fast, smaller in size and low cost. In this paper simulation of DVR in MATLAB/SIMULINK comprising of PI controller and synchronous dq0 theory has been presented.The simulation results depict the effectiveness of dynamic response of DVR and successful mitigation of the voltage sag and swell.

Power Quality, Dynamic Voltage Restorer, Voltage sag, Voltage swell, PI controller.

"Power Quality Improvement using Dynamic Voltage Restorer ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.353-360, November-2018, Available :http://www.jetir.org/papers/JETIRK006050.pdf

"Power Quality Improvement using Dynamic Voltage Restorer ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp353-360, November-2018, Available at : http://www.jetir.org/papers/JETIRK006050.pdf