替代制动电阻的车载储能系统容量配置研究

Study on Capacity Configuration of On-board Energy Storage Systems Substituting Braking Resistors

针对安装单一地面储能系统无法高效回收城轨列车再生制动能量的问题,提出利用车载储能系统替代车载制动电阻,通过车载-地面储能系统的协调配合实现城轨列车再生制动能量高效回收的方案。从实际工程应用出发,以列车原有车载制动电阻的质量和体积为约束条件,提出集中安装和分散安装两种车载储能安装方式,并以实际城轨列车为例分别进行两种安装方式下车载储能系统的容量配置。进一步搭建城轨牵引供电系统仿真模型,对替代后的节能稳压效果进行对比分析。结果表明:将原有制动电阻用车载储能系统替代后,节能率为7.27%,较仅安装地面储能系统提高了2.02%;稳压率为34.04%,较仅安装地面储能系统提高了22.85%,验证了利用车载储能系统替代制动电阻的优势。

To solve the problem that a single wayside energy storage system(WESS)cannot efficiently recover the regenerative braking energy of urban rail trains,a scheme is proposed to replace on-board braking resistors with on-board energy storage systems(OESSs)and then recover regenerative braking energy with on-board and wayside ESSs.Taking the weight and volume of original braking resistors as constraints,this paper proposes two ways to install OESSs,namely centralized installation and decentralized installation.Then an actual urban rail train is taken as an example to configure the capacity of OESSs.Finally,the simulation of urban rail traction power supply system is built to verify the energy-saving and voltage regulation effect of OESSs.The result shows that when the braking resistor is replaced by OESS,the energy saving rate is 7.27%,which is 2.02%higher than the case where only WESS is installed;the rate of voltage regulation is 34.04%,which is 22.85%higher than that with WESS installed.