Optimal configuration method of distributed energy storage system with branch flow model constraints

In order to realize the goal of "double carbon" and the photovoltaic strategic planning of the whole county, aiming at the problem of location and capacity determination of distributed energy storage to reduce the influence of distributed new energy on the distribution network, this paper considers the system benefits and costs, and proposes an optimal configuration model of distributed energy storage based on the constraint of branch power flow model on the basis of phase Angle relaxation and second-order cone relaxation of the power system constraints. Examples show that this method can effectively improve the voltage quality of distribution network, reduce the maximum transmission power of heavy-duty lines and improve the absorption rate of distributed new energy.