Optimal decentralized economical-sharing criterion and scheme for AC microgrids

摘要

In order to address the economical dispatch problem in islanding microgrids, this paper proposes a criterion and a decentralized economical-sharing scheme. The criterion is to judge the optimal economical-sharing whether can be realized via the decentralized approach. Then an optimal decentralized economical-sharing scheme is proposed. This overcomes the limitations of traditional centralized control, where the central controller and external information exchange are needed. The frequency is used as a carrier driven the objective function convergence, meanwhile the final frequency can be controlled within the allowable ranges and the DGs can share loads with optimal decentralized economical operation. An islanded microgrid model has been developed through simulations and experiments to verify the performance of the proposed method.