A Review of Distributed Energy Storage System Solutions and Configurations for New Distribution Grids

[Introduction] With the advancement of the "dual carbon" goals and the introduction of new energy allocation and storage policies in various regions, there is a need to further clarify the role of distributed energy storage in the new types of distribution networks and the configuration of associated energy storage system. [Method] This paper began by summarizing the configuration requirements of the distributed energy storage systems for the new distribution networks, and further considered the structure of distributed photovoltaic energy storage system according to different application needs. To maximize the economic aspect of configuring energy storage, in conjunction with the policy requirements for energy allocation and storage in various regions, the paper clarified the methods for configuring distributed energy storage systems and summarized the commonly used algorithms for determining the location and capacity. Based on this, research suggestions were proposed. [Result] Proper configuration of energy storage should be based on clear demands, selecting the appropriate topology and offering a configuration plan that is optimized by comprehensively considering indicators such as power supply stability, security, and economic efficiency of the distribution network. [Conclusion] Distributed energy storage technology is the key aspect of the new distribution networks and an essential means to ensure the safe and stable operation of distribution networks. To harness its full potential, further research into its optimal configuration and related control technologies is necessary.