Study on the Optimized Allocation of Electricity-Hydrogen Hybrid Energy Storage Capacity

With the proposal of dual-carbon policy, it is especially important to improve the economy and stability of microgrid while how to reduce the carbon emission of the system. To this end, this paper firstly constructs an electric-hydrogen hybrid energy storage system and proposes an electric-hydrogen hybrid storage stepwise control strategy. Finally, the system economy, energy utilization, load loss rate and carbon emissions are normalized to obtain the weighted integrated objective function under the minimum of each energy storage capacity. The results show that compared with the traditional electrochemical energy storage method, the electric-hydrogen hybrid storage significantly improves the stability of the system and reduces the carbon emission under the premise of close economy.