A Two-Stage Investment Behavior-Based Approach for Efficient Allocation of Electrical Energy With Shared Energy Storage Station

Coalition cooperative investment behavior and power allocation mechanism are key issues in the study of shared energy storage station (SESS). This paper proposes an effective alliance investment and allocation strategy to incentivize charging station operators (CSO) to invest in SESS construction. Firstly, to address the high cost problem of SESS, the paper suggests utilizing retired electric vehicle batterie (RBEV) as energy storage devices, aiming to reduce operational expenses. Additionally, a new measure called the "cooperation factor" (CF) is introduced in this paper. The CF effectively describes the complex facility scenarios and cooperation behavior among CSO and resolves the numerical unknowns related to the stability of the original coalition. Furthermore, considering the stability of CSO's cooperation and the role of incentive investment for CSO, a two-stage investment behavior-based approach for efficient allocation of electrical energy is proposed. Finally, real data from an urban area of a city is utilized in an experiment to validate the proposed allocation strategy. The results demonstrate that the proposed strategy improves the total system return by approximately 40%, cooperative participation rate of 93.48 % and shortened payback period of 4 years. Effectively addressing the high cost problem of SESS. Moreover, compared to other allocation methods based on cooperative games, the proposed allocation method in this paper is more reasonable for promoting cooperation and highly relevant to this specific scenario.