With the rapid development of DC distribution technology

distributed generation(DG)and energy storage system(ESS)can be integrated with distribution networks more efficiently

and a hybrid AC/DC topology configuration may appear. This paper presents the security-constrained coordinated economical dispatch method of energy storage systems and converter stations for hybrid AC/DC distribution networks. By optimizing reactive power adjustment of the converter station and charging/discharging of ESS

power supply companies can ensure safe operation of distribution networks while minimizing the total cost of energy purchased from the upper grid on the transmission and distribution separated electricity market. In addition

this is a mixed integer nonlinear programming problem and is difficult to solve. In this paper

the original model is transformed into a mixed integer linear programming problem by linearization technique. Finally

the simulation results can demonstrate the effectiveness and rapidity of the proposed method.