DefinePK

Abstract

The development in power electronic technology has created a major awareness regarding power quality in power distribution system. The paper presents various control strategies of Dynamic Voltage Restorer (DVR) for Power Quality improvement in Distribution system. Paper mainly focuses on impact and mitigation of power quality issues like voltage sag/swell in power distribution system with sensitive loads. The power quality issue voltage sag or voltage swell is mitigated by injecting compensating signals using custom power device DVR. DVR is controlled using different control strategies like ABC algorithm, unit-vector theory and SRF theory in this paper. Simulation analysis is carried out for DVR in distribution system with voltage quality issues with different control strategies showing out source voltage with voltage quality problem (sag/swell), compensating signals from DVR and load voltage. Simulation analysis is carried out using MATLAB/SIMULINK software.