Solar Powered Dynamic Voltage Restorer for Fault Current Interruption
M J MURALI
Dynamic voltage restorer (DVR), fault current interruption, photovoltaic array modeling, voltage injected
In this paper the solar powered Dynamic Voltage Restorer for fault current interruption in distribution side is presented. An auxiliary control strategy for downstream fault current interruption in a radial distribution line by means of a DVR is performed. Three separate controllers are used for the fault current reduction and voltage sag compensation in corresponding phases in the three phase system used for simulation. The proposed controller can supplement the voltage-sag compensation control of the DVR. It does not require any separate power source and independently controls the magnitude and phase angle of the injected voltage for each phase. It effectively reduced the impacts of noise, harmonics, and voltage disturbances on the estimated phasor parameters. The filter circuits used in the coupling circuits filters out the harmonics in the injected voltage.