Voltage optimization Strategy of Distribution Network Considering the Reactive Power of Energy Storage

More and more distributed generations (DGs) access to distribution networks makes the voltage regulation becomes more and more complicated. In order to solve the over limit problem of voltage, this paper proposes a method to optimize the reactive power and voltage of the distribution network by utilizing the reactive power capacity of energy storage. First, the influence of DG access on voltage and the reactive power capacity of energy storage are analyzed. Second, the coordination method of reactive power regulating resources in distribution network is proposed. Then, a voltage optimization model with energy storage participating in is established with the aim of minimizing the node voltage deviation in the distribution network and considering the equality and inequality constraints. Finally, the simulation results show that the proposed method can utilize the reactive power of energy storage and optimize the network voltage.