Accurate reactive power control of autonomous microgrids using an adaptive virtual inductance loop

In this paper, a new droop-based reactive power control strategy is proposed that is suitable for implementation in autonomous low voltage microgrids. The proposed method exploits the potentials of adding a dynamic virtual inductance loop to compensate for the voltage drop differences caused by line impedances. In addition, it provides a large virtual inductance at the output terminals of a distributed generation (DG) source to eliminate the coupling between the active and reactive powers. Finally, the efficiency of the proposed method to cope with the aforedescribed challenges is examined using comprehensive simulation studies. (C) 2015 Elsevier B.V. All rights reserved.