Research on Energy Storage Configuration for Data Center

In the context of the digital age, data centers are developing rapidly. The power supply methods of data center have received widespread attention. Energy storage system is widely used in data centers because of its flexible regulation and rapid response. This article proposes the configuration methods of the energy storage system participating in the system power supply conversion in the case of data center power supply conversion. It firstly introduces the power supply mode and control scheme of the data center. Then, it analyzes the relationship among the number of energy storage units, the battery and the system voltage, and finally concludes that the large current discharge and the low battery output voltage limit its own power response. Then, under the condition that the total capacity of the energy storage system remains unchanged, comprehensively analyze the impact of the configuration of one or more energy storage units on the reliability of power supply. Finally, the paper compares five different configuration methods of energy storage system through PSCAD/EMTDC simulation. The comparison results show that the configuration method of multiple energy storage units has faster response, smaller voltage drop range, and more effective and smooth switching of the power supply system, which provides a reference for the configuration of the energy storage system of the power supply.