Abstract: In this paper, the coordinated control strategy for energy storage to realize the island operation of microgrid is studied. Firstly, the energy storage converter model based on virtual synchronous machine control is established. Secondly, based on the stability analysis of multi-parallel connection of virtual synchronous machines in off-grid mode, it is proposed to dynamically adjust the active control parameters in the droop control by introducing state of charge (SOC) feedback to achieve reasonable distribution of active power among different energy storages. Finally, a number of energy storage systems were built on the simulink simulation platform to realize the island operation of the microgrid and verify the effectiveness of the control strategy in this paper.