Zonotope-Based Aggregation and Control Method for Distributed Energy Storage in Networks

The widespread adoption of distributed energy storage resources on the distribution network side has increasingly underscored the importance of harnessing their substantial flexibility potential. Given this background, a zonotope-based aggregation and control method for distributed energy storage in networks is proposed. First, an individual operational model of distributed energy storage resources was established, and their feasible region space was characterized. Second, an approximation and efficient aggregation method for the feasible region of distributed energy storage resources based on zonotope was proposed. Then, the aggregated clusters of distributed energy storage resources were applied to the optimal regulation of distribution networks, and a power decomposition method based on the water-filling algorithm was presented. Finally, the effectiveness of the proposed aggregation and regulation method for distributed energy storage resource clusters was validated through case studies on the revised 33-bus distribution network.