Optimal Configuration of Energy Storage Capacity on PV-Storage-Charging Integrated Charging Station

Abstract

The rational allocation of a certain capacity of photovoltaic power generation and energy storage systems(ESS) with charging stations can not only promote the local consumption of renewable energy(RE) generation, but also participate in the energy market through new energy generation systems and ESS for arbitrage. In this paper, a system operation strategy is formulated for the optical storage and charging integrated charging station, and an ESS capacity allocation method is proposed that considers the peak and valley tariff mechanism. First, the system modeling of the photovoltaic storage and charging station is carried out, the topology structure is analyzed and the cost model of photovoltaic power generation and ESS and dispatching is established; second, the energy flow of the photovoltaic storage and charging station is analyzed and the system operation strategy is formulated; then, the optimal model of ESS capacity configuration is established with the goal of obtaining the maximum benefit from the photovoltaic storage and charging station under the peak and valley electricity price environment; finally, the optimal ESS capacity configuration of the photovoltaic storage and charging station is analyzed based on specific cases and the impact of the change of ESS price on the optimal capacity configuration is discussed.