Island multi-microgrid that formed by interconnection of microgrids will be conducive to the improvement of system economic efficiency and supply reliability. For lack of support from the power grid

the requirement of real-time power balance of the island multi-microgrid is relatively high. For the real-time dispatch problem in the island multi-microgrid

the framework of real-time collaborative dispatch is proposed by using the multi-agent consensus theory. On this basis

a cost regulating model for the microgrid is developed. The consensus algorithm of power dispatch is then designed by selecting the regulation cost of each microgrid as the consensus variables to make all microgrids share the power unbalance. So the purpose of reducing the regulation cost is achieved. Simulation results show that the consensus algorithm of power dispatch can effectively solve the real-time power dispatch problem for the island multi-microgrid.