基于能量路由器的多站融合工程交直流配电系统

AC/DC Power Distribution System of Multi-Station Fusion Engineering Based on Energy Router

多站融合工程中,变电站、数据中心站、光伏电站、储能站、充电站和5G基站的直流电源和负荷日益增多,现有配电系统难以满足多电压等级直流设备的接入,电能需要多次转换,配电效率较低。介绍了多站融合工程各站点对配电系统的要求,分析了传统交流配电系统方案和交直流配电系统方案的优缺点。在传统方案基础上,为了充分发挥直流配电系统和能量路由器的优势,提出了一种基于能量路由器的多站融合工程交直流配电系统方案。该方案可实现交直流电源系统的柔性互联及多直流电压等级输出,以提升系统的可靠性、灵活性和多功能性。论述了本系统的拓扑结构和运行模式,并提出了能量路由器和储能变换器的工作模式和控制策略。

The multi-station fusion project is faced with the increasing DC power supply and load from substations, data center stations, photovoltaic power stations, energy storage stations, charging stations and 5 G base stations. The existing distribution system is difficult to meet the access of multi-voltage level DC devices, and the multiple energy conversions, resulting in low efficiency. This paper introduces the requirements of each station for power distribution system in multi-station fusion project, and analyzes the advantages and disadvantages of traditional AC power distribution system scheme and AC/DC power distribution system scheme. On the basis of the traditional scheme, in order to give full play to the advantages of DC power distribution system and energy router, it puts forward an AC/DC power distribution system of multi-station fusion engineering based on energy router. The system can realize the flexible interconnection of AC/DC power supply systems and the output of multiple DC voltage levels to improve the reliability, flexibility and versatility of the system. The topological structure and operation mode of the system are discussed, and the operation mode and control strategy of energy router and energy storage converter are presented.