Electric-Methanol Hybrid Energy Storage Control Strategy for Smoothing the Fluctuation of New Energy Generation

In view of the power fluctuation and large peak-to-valley difference caused by the large-scale grid-connected wind and solar energy, this paper proposes the hybrid electric-methanol energy storage, which combines the electrochemical energy storage with the electrolytic CO2-to-methanol energy storage and not only improves the stability of the power system, but also reduces the CO2 emission in a large scale. Aiming at the insufficient purity of electrolytic CO2-to-methanol brought by voltage fluctuation, this paper puts forward a new electrolysis tank rotation strategy, and further gives the capacity configuration of the electric-methanol hybrid power station to make it comply with the national regulations. A new electrolyzer rotation strategy is proposed to address the problem of insufficient purity of electrolytic CO2 to methanol due to voltage fluctuation, and the capacity configuration of an electric-methanol hybrid power plant is further given with the goal of making the power fluctuation of the power plant comply with national regulations.