Distributed voltage control of distribution network considering large-scale energy storage

In order to achieve the large-scale utilization of energy storage resources, the cooperative control framework is constructed for large-scale energy storage devices, and the voltage control method of distribu-tion network is proposed based on distributed optimization method. The proposed method uses the improved ADMM(Alternating Direction Method of Multipliers) to introduce the artificial consensus constraint in the dual problem of the optimization model, and only needs the neighboring communication to accomplish fully distributed charging and discharging of energy storage devices and the voltage support of distribution network. Simulation case based on IEEE 33-bus system verifies the effectiveness of the proposed method. Simulative results show that the distributed cooperative control can quickly converge to the optimal solution of the opti-mization problem, which benefits to suppress the impacts of the fluctuation of renewable energy sources on the power grid, and guarantees the security and stability of grid voltage with desired scalability and applica-bility. © 2022, Electric Power Automation Equipment Press. All right reserved.