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会员 Distributed Accurate Reactive Power Sharing Strategy for Islanded Microgrid
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摘要
In an AC microgrid composed of multiple distributed generators (DGs), it is impossible to guarantee the proportional distribution of the reactive power, due to the difference in line impedance between the parallel DGs, which leads to the reduction of the operating efficiency of the whole system and the increase of operating cost. To address this problem, a distributed accurate reactive power sharing strategy, which is achieved by adaptively adjusting the DG’s virtual impedances according to the reactive power deviation of every two adjacent DGs, is proposed in this study. In the exchanging of reactive power information, a quasi-unidirectional low-bandwidth wireless communication network is designed and adopted. The system structure and the operational principle of the proposed method are analyzed in detail, and the simulation results show the effectiveness and feasibility of this method.
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