考虑接触网-钢轨耦合关系及再生制动能量的新型电缆贯通供电系统电气特性  

Electrical Characteristics of New Continuous Cable Power Supply System Considering Catenary-Rail Coupling Relationship and Regenerative Braking Energy

作　　者：张丽艳[1] 郑兴 罗博 王杰 陈民武[1] ZHANG Liyan;ZHENG Xing;LUO Bo;WANG Jie;CHEN Minwu(School of Electrical Engineering,Southwest Jiaotong University,Chengdu Sichuan 611756,China;Tangshan Institute,Southwest Jiaotong University,Tangshan Hebei 063000,China)

机构地区：[1]西南交通大学电气工程学院,四川成都611756 [2]西南交通大学唐山研究院,河北唐山063000

出　　处：《中国铁道科学》2023年第3期164-177,共14页China Railway Science

基　　金：国家自然科学基金资助项目(51877182);四川省科技计划项目(2020YJ0011);中国铁道科学研究院集团有限公司院基金课题(2021YJ268)。

摘　　要：针对新型电缆贯通供电系统模型未准确反映接触网与钢轨之间的耦合关系、未考虑再生制动能量利用及环网加单边供电方案等问题,采用电流控制的电压源解耦方法反映接触网和钢轨之间的耦合关系,建立基于二端口网络的新型电缆贯通供电系统模型;在计算系统牵引网阻抗、电压损失及馈线电流的基础上,结合实际线路数据,提出3种电缆贯通供电方案,在不同运行工况下仿真分析各供电方案下系统的电气特性,并考虑再生能量利用设计牵引变压器容量,以达到降低牵引变压器容量和运营维护费用的目的。结果表明:新型电缆贯通供电系统在各种供电方案下的再生能量利用率均较高,普遍达到90%以上;在相同牵引变压器数目下,环网加单边供电方案电压损失、牵引网损耗等性能指标均优于单纯的环网结构;再生制动能量能够作为牵引变压器容量设计的参考因素。Aiming at the issues that the model of new continuous cable power supply system does not accurately reflect the coupling relationship between catenary and rail,and does not take into account the utilization of regenerative braking energy and the scheme of adding single side power supply in loop network,the current controlled voltage source decoupling method is adopted to reflect the coupling relationship between catenary and rail,and a model of new continuous cable power supply system on the basis of two-port network is established.Based on the calculation of traction network impedance,voltage loss and feeder current of the system,combined with the actual line data,three continuous cable power supply schemes are proposed.The electrical characteristics of the system under each power supply scheme are simulated and analyzed under different operating conditions,and the traction transformer capacity is designed considering the utilization of regenerated energy,so as to achieve the purpose of reducing the traction transformer capacity and the operation and maintenance costs.The results show that the regenerated energy utilization rates of the new continuous cable power supply system are high in all kinds of power supply schemes,generally reaching more than 90%.Under the same number of traction transformers,the voltage loss and traction network loss of the loop network plus single side power supply scheme are better than those of the simple loop network structure.Regenerative braking energy can be used as a reference factor in the design of traction transformer capacity.

关 键 词：新型电缆贯通供电系统 系统模型 接触网与钢轨耦合关系 供电方案 再生能量 牵引变压器容量 

分 类 号：U22.3[交通运输工程—道路与铁道工程]