Improvement of Power Quality in Low Voltage Distribution Grids

Abstract

Nowadays, The main concern in the electrical power system is the quality of power. Electrical devices are affected by power quality disruptions such as voltage sags which swells and cause severe damage. Therefore, to ensure regular and efficient operation of the power system, the disruptions must be acknowledged and compensated. In this paper, a compensatory control method using the voltage restorer is demonstrated. The proposed system is capable of restoring voltage in such a way that it maintains constant voltage and restores the power quality. Thus, improvement in voltage profile will reflect in power factor, reactive power and efficiency of the system. Power quality issues are gaining considerable attention as the number of sensitive loads increases.  Nearly all energy performance issues are caused by failures in the distribution networks. The voltage regulator is used to overcome the problems of the power system stability. MATLAB / SIMULINK performs simulation tests to evaluate the performance of the system proposed.