Abstract

Voltage drop in the power carrying conductors and voltage sag due to sudden faults are the major problems in secondary distribution network. There are different methods to compensate voltage sag and voltage drop but the application of Dynamic Voltage Restorer (DVR) is the most preferred method in secondary distribution network. A new DVR model is proposed and developed with dq0 controller. This paper gives investigation results which are very acceptable value of voltage (plus or minus 5 percentage) after the application of DVR with dq0 controller in secondary distribution network. The DVR with dq0 controller structure which is designed for improving voltage at load end under sag conditions were verified in MATLAB/SIMULINK with Simscape Power Systems tool box.