Abstract
This paper studies the precise harmonic power sharing problem of microgrids. In order to deal with the voltage distortion caused by nonlinear loads, a harmonic droop controller is designed. Furthermore, the distributed consensus protocol is proposed to equally distribute the harmonic power at the point of common coupling (PCC). The proposed method can improve the reliability and flexibility of the microgrid system, against grid disturbance and feeder impedance mismatch, such that the harmonic power can be precisely shared proportionally among distributed generator (DG) units. The simulation results show that the control strategy has good performance in realizing harmonic power sharing and improving the harmonic distortion of PCC voltage.
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