铁路枢纽牵引供电系统方案优化设计

大型枢纽是不同铁路干线牵引供电系统交汇的地方,对牵引供电系统的安全性和可靠性要求较高。研究牵引供电能力及牵引供电设施分布、牵引供电设施选址、供电分区划分对大型枢纽变电所设计方案的影响;基于现有设计现状,着重阐述“由里向外”与“由外向里”2种典型枢纽变电所供电方案的应用现状及问题;提出通过调整供电设施布置,在大型站场、动车所以及负荷集中区域设置开闭所的方案优化设计建议,并提出枢纽内牵引变电所的相互备用方案,提高供电安全性和可靠性,可实现技术经济性最优。

Optimization and Design of Traction Power Supply System at Railway Hub

As the intersection of the traction&power supply systems of different railway trunk lines,large transport hub raises high requirements for the safety and reliability of such systems.The paper analyzes the influence of system capacity,facility distribution,site selection and power zoning on the design of substations at large hub.Based on existing design,the paper focuses on two typical design schemes,namely“inward supply”and“outward supply”,as well as the problems occurred.It proposes an optimized plan where subsection post is set at large stations&yards,EMU workshop and heavily loaded areas via the adjustment of facility arrangement.At the same time,a mutual standby scheme for traction substations at hubs is put forward to improve the safety and reliability of power supply and maximize technical and economic performance.