Research on AC/DC Hybrid Distribution System in Multi-station Integration Project Based on Energy Router

In the multi-station integration project, the DC power supply and load of substations, data center stations, photovoltaic power stations, energy storage stations, electric vehicle charging stations and 5G base stations are increasing rapidly. The traditional power distribution system is difficult to meet the requirement of multi-voltage DC equipment In addition, electric energy needs to be converted multiple times, reducing efficiency. The advantages and disadvantages of the traditional AC power distribution system scheme and the AC/DC power distribution system scheme are analyzed. On the basis of the traditional scheme, in order to give full play to the advantages of the DC distribution system and energy routers, an AC/DC distribution system scheme based on energy routers in multi-station integration project is proposed to realize the flexible interconnection of AC/DC power systems and multiple DC voltage level output, to improve the reliability, flexibility and versatility of the system. The topological structure and operating mode of the system are discussed, and the working mode and control strategy of energy routers and battery energy storage converters are proposed.