In view of the problem that random and intermittent characteristics of distributed power in isolated wind/photovoltaic/storage DC microgrids leads to power fluctuations in the energy storage system and thereby affects the economy and reliability of the system

a kind of optimization method for microgrid power configuration is proposed in this paper. The method takes the minimum annual investment of the micro grid construction and maintenance as well as minimum power shortage rate of the system load as objective and the optimized model of isolated DC microgrid configuration is set up. At the same time

the multi-objective spider monkey algorithm based on attraction and differential evolution is carried out in this paper and the experiments under the test function is performed so to verify the effectiveness of the algorithm. The optimal configuration set is obtained by solving the proposed model by the use of the algorithm

which provides a solution for the design of isolated wind/solar/storage DC microgrids.