Abstract:
Abstract: In the context of a high proportion of new energy sources， optimizing the cooperative operation of energy storage systems can enhance the overall economic and environmental benefits and contribute to sustainable development. This paper proposes a multi-objective coordinated control strategy for the problem of a single optimization scenario of user-side energy storage systems. The distributed coordinated control of user-side energy storage systems is realized by improving the adaptive step-size method of the alternating direction multiplier method （ADMM）. Firstly， a distributed framework of user-side energy storage based on Harmony systems is constructed， and a coordinated control strategy for these systems is designed. Subsequently， a multi-objective optimization model encompassing the costs associated with electrical energy usage， environmental impact， and energy storage operation is developed. To address the issue of disparate convergence rates observed during multi-objective optimization iterations， an adaptive step-size distributed iterative optimization method based on ADMM is employed. This approach effectively enhances operational efficiency while safeguarding the privacy of the user-side energy storage system. The experimental results demonstrate that the proposed distributed framework significantly enhances the operational efficiency， while the multi-objective coordinated control strategy markedly enhances the system gain.

Key words: Key words: energy storage, alternating direction multiplier method, multi-objective optimization, renewable energy, coordinated control, distributed algorithm