能源互联网中H桥直流能源路由器的研究

Research on H-bridge DC energy router in the energy Internet

能源互联网是构建在可再生能源发电和分布式储能装置基础上的新型电网结构,也是未来电网发展的新趋势。能源路由器主要任务在于能量的调节及信息的实时传递,是能源互联网的核心部分。文中提出的H桥型直流能源路由器,既可作为各种分布式能源发电装置和负载接入能源互联网的接口,又可实现能量的双向流动及协调控制,具有结构简单、适用范围广、经济成本低等特点,尤其是对直流微电网形式的能源互联网具有更强的适用性。文章首先介绍了能源路由器的国内外发展动态;然后介绍了能源路由器的应用领域及功能特性;接着对H桥型直流能源路由器的工作原理进行分析,并建立了H桥直流能源路由器的PSCAD仿真模型;最后,通过搭建相应实验平台验证了H桥型能源路由器能量的双向流动。

Energy Internet is a new type of power grid structure based on renewable energy power generation and dis- tributed energy storage devices, and it is also a new development trend of power grid in the future. Energy router is the core part of the energy Internet, whose main task is to adjust the energy and information exchange in real-time. The H-bridge DC energy router, both as the interface of a variety of distributed energy generation device and load energy access internet, and can realize energy bidirectional flow and coordinated control. The structure has a stronger applicability in the energy Interuet based on the DC micro-grid, and has the advantages of simple structure, wide application range, low cost and etc. Firstly, this paper introduces the development trends of energy router at home and abroad. Secondly, the application domain and functional characteristics of the energy router are introduced. Once more, the working principle of H bridge DC energy routers are analyzed, and the simulation model of the H bridge DC energy routers is established by PSCAD. Finally, the bidirectional energy flow in the H-bridge DC energy router is verified by building the corresponding experimental platform.