By Regulating the Flow of Hydrogen-electricity in the Microgrid Internet to Coordinate the Operation of the Distribution Network and Transportation Network

Currently, electric vehicles and hydrogen fuel cell vehicles are rapidly increasing in urban transportation networks. However, the large-scale charging of new energy vehicles poses significant challenges to the coupled system of distribution networks and transportation networks. On one hand, the charging demand of new energy vehicles (including electricity and hydrogen) brings peak loads to the distribution network operations. On the other hand, uncoordinated charging behavior of new energy vehicles causes congestion in the transportation network. Therefore, how to effectively regulate the operation of the distribution network and transportation network within a safe domain is an urgent problem. This paper proposes achieving coordinated regulation of the coupled system by regulating the flow of hydrogen-electricity in the microgrid internet. Firstly, a model for the flow of hydrogen-electricity in the microgrid internet is constructed. Secondly, a collaborative regulation method based on price mechanisms is established. Inside the microgrid internet, electricity-hydrogen transactions are made based on electricity and hydrogen prices; between the microgrid and the distribution network, electricity transactions are based on electricity prices; and the microgrid guides the charging of new energy vehicles through charging prices. Finally, simulation verifies the effectiveness of the price mechanism in regulating the flow of electricity-hydrogen within the microgrid internet. Results show that regulating the flow of hydrogen-electricity in the microgrid internet based on price mechanisms can significantly adjust voltage fluctuations in the distribution network and improve traffic efficiency in the transportation network.