Power Quality Improvement in Distribution System using Small Energy Storage System DVR

Power quality problems voltage sags and swells especially caused by industrial distribution system have huge impact on system power quality. This paper deals with custom power device DVR to mitigate power quality problems. The control of compensation voltage in DVR has been proposed using dqo controller technique. A test system is simulated in Matlab/Simulink with different DVR configurations that prove the effectiveness and robustness of the proposed control strategy with dynamic voltage restorer for voltage sag mitigation. The results show that voltage sags are totally compensated [1].