双流制牵引供电系统电分相 “ 车-网 ” 电气耦合研究  

Research on“Network-locomotive”Electrical Coupling of Double Flow Modes Traction Power Supply System

作　　者：周灿伟 ZHOU Canwei(Chongqing Railway(Group)Co.,Ltd.,Chongqing 401120,China)

机构地区：[1]重庆市铁路(集团)有限公司,重庆401120

出　　处：《电工技术》2022年第21期61-64,69,共5页Electric Engineering

摘　　要：随着经济的快速发展与城市规模的不断扩张,不同供电制式的城市地铁与市域铁路的互通互联需求日益迫切。基于重庆江跳线双流制牵引供电系统实际参数,构建了双流制“车-网”耦合模型,分析了正常过分相工况的“车-网”电气暂态特性;基于动态“弓-网”电弧模型,研究了机车双流制切换失败工况下,“弓-网”弧光特性与“车-网”暂态耦合特征;充分考虑机车过分相极端故障工况,建立了分相绝缘器沿面放电模型,分析了分相绝缘损坏与双流制切换失败叠加工况下的“车-网”暂态耦合过程。基于仿真结论给出相应的运维建议,为过电压抑制、绝缘器件选型提供必要支撑。With the rapid development of economy and the continuous expansion of urban scale,the interconnection between urban subway and urban railway with different power supply systems is becoming more urgent.Based on the actual parameters of AC/DC dual-system traction power supply system of Jiang-jumper line in Chongqing,this paper constructs a double flow"Network-Locomotive"coupling model.The electrical transient characteristics of"Network-Locomotive"under normal over phase conditions are analyzed.Based on the dynamic"pantograph-network"arc model,the characteristics of"pantograph network"arc and"Network-Locomotive"transient coupling under the condition of dual flow switching failure are studied.Considering the extreme fault condition,the surface discharge model of insulator is established.Transient coupling process of the"Network-Locomotive"under the condition of insulation damage and dual flow switching failure is analyzed.Based on the simulation results,the corresponding operation and maintenance suggestions are given to provide necessary support for overvoltage suppression and insulation device selection.

关 键 词：双制式 电分相 建模 电弧 

分 类 号：U223[交通运输工程—道路与铁道工程]