Grid-Connected Topology Design of Urban Rail Photovoltaic-Energy Storage Based on Multi-Port Energy Router

With the rapid development of urban rail transit, problems such as increased energy consumption have become increasingly prominent, and under the impetus of the “double carbon” background, it is imperative to promote the transformation of urban rail transit energy structure to green and low-carbon, and photovoltaics due to Its own advantages have gradually attracted the attention of the urban rail field in recent years. This paper first analyzes the characteristics of domestic urban rail photovoltaic grid-connected projects and puts forward the feasibility and advantages of urban rail photovoltaic grid-connected projects taking a subway line in Beijing as an example, then introduces the characteristics and common methods of urban rail photovoltaic grid-connected projects, and finally puts forward Combining the geographical characteristics of urban rail with the integration of photovoltaic-energy storage energy micro-grid modules, and combining the working conditions, the control framework is proposed, as well as the structure of the energy router used as the interface and the analysis of its control principles.