Abstract: Aiming at the problems of unclear modeling level, unclear positioning and insufficient adaptability of model application scenarios for large-scale energy storage power stations, this paper puts forward the modeling system framework and application prospect of large-scale energy storage power stations under the new energy system. Firstly, the paper explains the modeling requirements of energy storage system from two perspectives of energy storage positioning and power system stability. Secondly, the overall framework and method of multi-time scale modeling of energy storage power station are proposed. An actual power grid is taken as an example, and the selection principles and matching suggestions of multi-type model application scenarios are provided. The research shows that the power system stability framework directly generates the demand for energy storage modeling, and provides different application scenarios of energy storage models. The application of energy storage model not only includes the energy storage device characteristics and stability characteristics verification, but also includes the evaluation of energy storage's support capacity for energy and power transformation. The research conclusions can be adopt to build a systematic idea for energy storage modeling, and also provide guidance for the application of energy storage models, which is helpful to realize the analysis and decision-making related to energy storage power stations.