Distributed Energy Storage Planning Considering Active Distribution Network Vulnerability

With the large-scale integration of distributed power supply, the vulnerability of active distribution network is intensified. This paper plans the energy storage device from two parts: site selection and constant volume. Based on the vulnerability assessment system of active distribution network, the installation nodes of energy storage devices are determined. The constant volume model of energy storage is aimed at optimizing the economic benefits of power grid construction unit and operator, and the improvement degree of active distribution network vulnerability is considered in the constraint conditions. Based on the constant power method, the energy storage charge-discharge strategy in this paper comprehensively considers the effect of peak cutting and valley filling before and after energy storage output. Taking IEEE33 node as an example, particle swarm optimization (PSO) algorithm is used to solve the problem of energy storage constant volume. The calculation results show that the energy storage configuration method proposed in this paper can effectively improve the vulnerability of active distribution network and has economic advantages.