With the rapid development of microgrid, the role of energy storage is becoming increasingly important. Previous research focuses on the all-digital simulation of energy storage. A hybrid simulation platform based on RT-LAB is established, where energy storage and photovoltaic are dynamic simulation devices in this paper. Firstly, the effect of energy storage on the frequency modulation of the system is analyzed. Furthermore, energy storage is used to stabilize the fluctuation of photovoltaic(PV) power, and the impact of PV power before and after smoothing on the system is studied. In addition, the energy management platform based on PLC is constructed to realize the power distribution between the multi-type energy storage. Finally, the simulation experiment results show that energy storage can improve the stability of microgrid.