With the increasing penetration of distributed generators on the demand side

the dispatch problem among interconnected microgrids(MGs)is difficult to solve by directly optimizing its non-cooperative features. In view of this

this paper proposes a prosumer-based autonomous-synergetic operation strategy for interconnected MGs by integrating the bilateral trade mechanism of electricity market. With full respect for the objective law of market operation

this strategy can provide a reference for economical dispatch of distribution networks by mining the essence of power transaction and active energy management. A two-level optimization algorithm is designed to realize the strategy

in the lower level of which

the local marginal price and supply/demand curves of autonomous MGs are calculated to seek the equilibrium point of synergetic operation of interconnected MGs. In the upper-level

the primal-dual interior-point method is employed to optimize the injection power of MGs and tie-line power. Simulation results show the correctness of the strategy proposed and its effectiveness of application in the real-time optimization dispatch of an active distribution network. This work is supported by National Basic Research Program of China (973 Program) (No. 2013CB228206)

Zhejiang Provincial Natural Science Foundation (No. LZ14E070001)

and State Grid Corporation of China (No. XT71-14-003).