有轨电车储能式系统配置方案及供电系统研究

Study on Tram Configuration Scheme of Energy Storage System and Power Supply System

超级电容能量密度低,以超级电容为储能元件的储能式有轨电车储能能量较少,有可能出现由于能量不足而故障停车。为解决该类问题,基于对有轨电车超级电容系统和供电系统的分析,提出车载储能系统配置改进方案。通过对改进方案的仿真分析及经济性分析,认为基于锂离子电池的储能系统方案在满足有轨电车原有牵引特性不变的前提下,具有更好的经济性。在有轨电车全寿命周期(30年)内,该方案供电系统的建设成本、储能系统一次性采购及更换成本,以及运营成本都大幅下降,全寿命周期成本降低了51.14%,具有良好的工程应用前景。

The tramcar with pure super capacitor as energy storage system is possible to stop due to insufficient energy,because of the low power density in super capacitor.In order to solve the problem,with an analysis of the tram super capacitor system and the power supply system,an improved configuration scheme of on-board energy storage system is put forward.Through simulation verification and economic analysis of the improved scheme,it is concluded that the improved energy storage scheme based on LI-Ion(lithium ion)battery has higher reliability in the whole life cycle,on the premise that the original traction characteristics remain unchanged.In the period of tram life cycle(30 years),the construction cost,the one-time purchase and replacement cost of the new energy storage system,as well as the system operation cost will drop dramatically,resulting in 51.14%reduction of the power supply life cycle cost,and good engineering application prospect.