Research on Key Technologies of Power Grid Side 100MW Energy Storage System

To improve the construction specifications and operational benefits of the grid-side 100MW energy storage system, this paper, based on government policies, academic research, and industrial applications, first summarizes the research status at home and abroad in terms of the grid-side energy storage system's function, power regulation, frequency regulation, investment income, and safety protection. Secondly, the “4S” architecture for the grid-side energy storage power station is proposed, and the similarities and differences with the traditional “3S” architecture are described in terms of structure, function, and response speed. Thirdly, from the three dimensions of energy monitoring, coordinated control, and energy storage converter, this paper expounds the key technologies of grid energy storage power station under the “4S” framework. Finally, the research contents of this paper are summarized, and future research directions are discussed from the physical and information levels.