公交化运营模式下的城际铁路与市域铁路越区供电能力分析  

Analysis of Over-zone Power Supply Capacity of Intercity Railway and Regional Railway under Public Transport pattern

作　　者：秦晓宇 QIN Xiaoyu(China Railway Engineering Design and Consulting Group Co.,Ltd.,Beijing 100055,China)

机构地区：[1]中铁工程设计咨询集团有限公司,北京100055

出　　处：《铁道标准设计》2023年第12期182-188,共7页Railway Standard Design

基　　金：国家铁路局课题研究计划项目(SJ2021-042)。

摘　　要：近年来,城际铁路与市域铁路均提出了“公交化”的运营模式,牵引供电系统越区供电能力受该模式的影响较大。基于此,对公交化运营模式下的城际铁路与市域铁路(AC25 kV)越区供电能力展开研究,梳理城际铁路与市域铁路相关规范要求,分析“限车越区”和“全支援越区”两种方式下的供电能力校核原则,结合工程实例探讨越区供电能力对运输组织和供电设施设备规格的影响,最后给出解决方案和建议:(1)在不改变牵引供电设施分布的情况下,可通过增大接触悬挂导线截面、架设加强线、增大变压器容量等措施提高越区供电能力;(2)当工程兼具城际与市域铁路功能特性时,如建设单位或运营单位未对越区供电能力提出明确的运营需求,越区供电能力在满足城际铁路规范的前提下宜向市域铁路要求靠拢,兼顾经济性的同时尽可能保证公交化服务水平;(3)4编组CRH6动车组高峰小时3 min紧密追踪时,150 mm^(2)接触线+120 mm^(2)承力索组合、变压器40 MVA安装容量配置下的供电范围最大可达40 km,该结果可为类似项目的越区供电设计提供参考。Intercity railway and regional railway have proposed the“public transport”pattern recently,and over-zone power supply capacity is greatly affected by it.Based on this,this paper compares the specifications of intercity railway and regional railway(AC25kV),analyzes principles of“limited vehicle”and“full support”over-zone power supply mode.Finally,the influence of over-zone power supply capacity is discussed with examples.Suggestions are as follows:(1)Over-zone power supply capacity can be improved by increasing the cross section of the traction network,erecting reinforcing wires and increasing transformer capacity without changing power supply facilities distribution.(2)When construction or operating unit does not put forward a clear demand for over-zone power supply capacity,it should be close to the requirements of the regional railway on the premise that it meets the intercity railway specifications in order to improve the service level of public transport without adding more investment.(3)When 4-car CRH6 multiple units are closely tracked for 3min,the maximum power supply range can reach 40 km under the configuration of contact wire(150 mm^(2))+catenary cable(120 mm^(2))and transformer capacity(40 MVA).This result can provide reference for over-zone power supply design of similar projects.

关 键 词：城际铁路 市域铁路 公交化运营 牵引供电系统 限车越区 全支援越区 

分 类 号：U223.5[交通运输工程—道路与铁道工程] U231.8