Study on the Influence of Energy Storage on the VRE Station’s Utilization Rate

Abstract With the proposal of carbon peak and neutrality goals, variable renewable energies (VREs mainly wind power and solar) will usher in fast development. To ensure the effective consumption of VREs, it is necessary to improve the flexibility of power system. With the high proportion of VREs, the risk of insufficient flexibility of power system increases, and serious abandonment of VREs may occur. Energy storage is an effective means to improve system flexibility and increase VREs’ utilization rate. At present, many provinces in China have issued requirements for the allocation of energy storage for VRE projects, but there is little literature to analyze the impact of the allocation of energy storage in VRE stations on the utilization rate of VREs. In this paper, the joint optimization model of VRE stations and energy storage is established, which can accurately simulate the equivalent power after energy storage is configured in the VRE station. This model is used to study the impact of energy storage configuration proportion on the utilization rate of the VRE station.