Energy Storage System Planning Based on Cost Analysis in Distribution Network

With the increasing proportion of distributed energy in distribution network, the characteristics of intermittent and fluctuation greatly reduce the security of the distribution network, and the energy storage system can effectively alleviate this situation. In this paper, the method of storage battery configuration is studied from the point of cost analysis. First, the charging and discharging process of the battery is optimized. Then, the investment income model which aims at the maximum net income of the storage battery system is set up by considering the subsidy of energy storage policy, the electricity price subsidy, the investment cost and the additional benefit. Finally, the difference algorithm and the interior point method are combined to solve the model. In the example part, we consider and compare different battery configurations and the corresponding revenue. The results verify the feasibility of the proposed configuration method.