In order to solve the problems that may exist in the large-scale application of energy storage, the “plug-and-play” technology is realized through battery storage power plants. The concept of plug-and-play originates from the network, which refers to the ability of the computer system to configure expansion boards and other devices automatically. This paper researches plug-and-play key technologies for battery storage power stations, aiming to overcome the grid-connected bottlenecks after large-scale application of energy storage systems, improve the effectiveness and convenience of the grid-connected operation of energy storage systems, and effectively improve the practicality of energy storage systems level, supporting the company’s energy Internet development strategy. Based on the technical framework of plug-and-play realization of battery storage power stations, this paper will conduct technical research on the realization of information flow. First, based on the IED modeling method and the actual functional requirements of BESS, we select logical nodes with corresponding functions to form logical devices and establish the BESS information model. Then, we express the self-describing characteristics through the SCL configuration file and analyze the configuration process of the configuration description file CID. Finally, the plug-and-play information flow implementation architecture is constructed with the heterogeneous information model mapping and data conversion module as the core part. Our design can realize the real plug-and-play operation of the battery storage power station connected to the regional power grid, thereby promoting the friendly interaction between the regional power grid and the battery storage power station and improving the adaptability of the battery storage power station in different application scenarios.