Application Scenarios of Energy Storage and Its Key Issues in Development

[Introduction] Energy storage is an important component and key supporting technology of Energy Internet. It can provide various services such as peak shaving and frequency modulation. It is an important means to enhance the flexibility, economy and safety of traditional power system. [Method] This paper reviewed the characteristics of the existing main energy storage technologies, and analyzed the functions and requirements of energy storage at power supply side, user side and grid side. According to the status quo of application, the key issues of safety, economy and business model of energy storage are pointed out. [Result] The results show that the energy storage operation simulation, multiple combination utilization, combination of concentration and dispersion should be strengthened from the perspective of energy storage application. [Conclusion] This work provides some guidance for further study on the application research and development of energy storage technology.