  Dynamic Voltage Restorer (DVR), for some important reasons, is utilized in
Power Distribution for protecting loads especially critical loads against some
power quality issues like sag, swell, harmonics and faults. Fast transient
response for compensating voltage quality is an unavoidable factor. Different
control topologies have been applied to this device. In this project, a DVR is
deployed to preserve a critical load that is connected in parallel with the
grid and A wind turbine. Several situations of power quality issues have been
considered. The simulation results of a proposed system that has been
implemented in MATLAB/Simulink show how DVR is effective for protecting loads.
