Abstract
In mismatched feeder line condition, reactive power sharing among distributed generators in islanded microgrids is one of the recent challenges. A comparative study is presented between two mathematical models of adaptive virtual impedance based on the leaderless and leader-followers consensus control methods. Also, a triangle mesh communication topology is proposed with these consensus methods to compare the accuracy of sharing reactive powers, enhancement of the rate of convergence, and the communication topology cost. A MATLAB/Simulink model with six distributed generators units validates the proposed control methods' performances and finds the difference in the rate of convergence between leaderless and leader-followers consensus algorithms. The findings of the paper are leaderless consensus control is a reliable option with large systems, while the leader-followers consensus control is suitable for the small systems.
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