Improve the Reactive Power Sharing by Uses to Modify Droop Characteristics in Autonomous Microgrids
Usually, the conventional droop methods is utilized for control of autonomous micro-grids. In islanded micro-grids (MG), due to the effects of mismatch in line impedance, the reactive power can't share by using the conventional droop method. In this paper, a method is proposed to improve reactive power sharing. In this method, the micro-sources are acted with P-w & Q-E droop characteristics, and then the reactive power sharing error is reduced to modify Q-E characteristic on the periodic time distances. The feasibility and effectiveness of the proposed method are validated using simulation on SIMULINK/MATLAB software.
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