Through the analysis of advantages and disadvantages of ACE signal and ARR signal based on battery energy storage participating in AGC, an integrated control method is proposed and the timing and depth of switch are also defined. That is when the system frequency being deteriorated, the|Df| is large, according to the fuzzy control theory, smoothing the output depth of the energy storage battery is based on the SOC. When the system is in good condition and the |Df| is small, to make full use of the remaining capacity of traditional generator in secondary frequency regulation, the storage need doing self adaptive modification of SOC. With the definition of the evaluation indicators, it uses Matlab/Simulink to participate in the secondary frequency regulation of energy grid and selects a typical continuous disturbance in simulation. Compared with the traditional strategy, the results show that the proposed method has advantages in terms of reducing the frequency deviation and steady frequency deviation. Compared to the ARR-based control method, the capacity and power requirements of the energy storage battery are smaller; compared to the ACE-based control method, the frequency modification effect is better and the utilization rate of the conventional generator is higher. This control strategy can promote the secondary frequency regulation ability. This work is supported by Science and Technology Project of State Grid Corporation China (No. NY71-18-014):Energy Storage Substation Optimization Configuration and Control Oriented to Power Grid and National Natural Science Foundation of China (No. 51677059).