Mitigation Voltage Sag/Swell and Harmonics Using DVR Supplied by BES and PV System

This paper presents mitigation voltage sag/swell and harmonics in low voltage distribution network using Dynamic Voltage Restorer (DVR) supplied by Battery Energy Storage (BES) and Photovoltaic (PV) system. This combination is called DVR-BES-PV and it is compared to DVR-Capacitor (Cap), DVR-BES, and DVR-Cap-PV. The unit vector template generation (UVTG) method is used to control series active filter at DVR when it injects compensation voltage during voltage sag/swell disturbance. The DVR-BES-PV is able to generate the lowest percentage of sag/swell and its value has met IEEE 1159. This combination is also capable to result the lowest average Total Harmonics Distortion (THD) of load voltage and its value has fulfilled limit prescribed in IEEE 519. Therefore, combination of DVR-BES-PV is able to result the best performance in mitigation of sag/swell and harmonics on load bus compared to the other three DVR combinations. Simulation and analysis of this paper uses Matlab/Simulink environment.