Abstract: Composite energy storage is the guarantee of micro power grid security and stability of one of the key technologies,according to their respective operation advantages of energy storage power characteristics,based on the drooping of the upper,lower down sagging layered coordination control strategy,the upper all vanadium flow batteries energy storage using autonomous droop control,super capacitor using the drooping down,with the aim to optimize the system stability,which can realize to reduce construction cost and increase the actual project feasibility,applied PSCAD software system for simulation,simulation in this paper,the control strategy is adopted to control the stability of power grid,is the power of micro grid power generation capacity of energy storage system protection design and configuration provide help and reference value.