Study On The Optimal Planning Of Electric Bus Charging Network

Developing low-emission electric bus system is an important measure for many countries to build wise and green new cities.Electric bus charging network is the link between energy and transportation system,and is the basis of supporting the daily operation of electric bus.The characteristics of social universal service of public transport system determines that the planning of public transport charging network must meet the technical requirements of supporting the operation of public transport dispatching.Therefore,based on the technical and economic needs of the integration of public transport network and power grid,this paper studies the optimization planning of bus charging network.Firstly,based on the characteristics of bus network dispatching and operation,according to three different modes of power supply,i.e.battery swapping,slow charging and fast charging,a simulation model of electric bus charging demand is established to predict and analyze the charging demand of electric bus.Secondly,an optimization model of bus charging load demand response is established to evaluate the demand response potential of bus charging load under battery-swapping mode.Finally,an optimal planning model of electric bus fast charging network is established,which takes into account the integration of technology and economy of public transport network and distribution network.The results show that fine forecasting,orderly regulating and controlling the charging load of EBT and optimizing the planning of EBT charging network are conducive to achieving the coordinated integration of energy transport network,meeting the large-scale access of EBT charging load in a more economical way,and promoting the construction of intelligent energy system with coordinated development of low-carbon power system and public transport system.