基于集中式交直交电源的铁路供电方案研究  

Research on the Railway Power Supply Solution Based on Centralized AC-DC-AC Power

作　　者：汪淳[1] WANG Chun(China Railway Siyuan Survey and Design Group Co.Ltd,Wuhan,Hubei 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《铁道工程学报》2021年第12期74-80,共7页Journal of Railway Engineering Society

基　　金：国家自然科学基金项目(51307143);中铁第四勘察设计院集团有限公司科技开发项目。

摘　　要：研究目的:我国铁路电力供电电源通常优先采用外部公共电网中的可靠电源,但部分铁路接引公共电网可靠电源困难,或是接引电源线路过长、工程造价高、建设难度大。针对以上问题,本文提出一种由牵引供电系统供电的设计方案,牵引供电系统中牵引变电所牵引侧母线作为电力供电电源,采用集中式交直交电源设备将单相电源变换为三相电源为电力贯通线供电。建立Matlab/Simulink仿真模型对该系统进行计算和分析论证,获得集中式交直交电源设备使用情况下电能质量及其对牵引供电系统的影响规律和效果。研究结论:(1)基于集中式交直交电源供电方案的供电质量能够满足铁路电力供电的需求;(2)集中式交直交电源适用于接引外部公共电网电源困难的铁路电力供电。Research purposes:Currently,the railway power load has been supplied by public power grid in China.However,some problems has been revealed in part of railways,including difficulties in connecting reliable power sources,hard-wiring with long distance,great investment,and difficulties in project construction.To address these issues,the power supply method by plugging the traction power supply system with centralized AC-DC-AC power unit has been proposed and discussed in this paper.The traction side bus of traction substation in traction power supply system is used as the power supply,and centralized AC-DC-AC power unit is used to transform from single-phase into three-phase.The power quality and its effect on traction power supply system with centralized AC-DC-AC power unit have been quantified and analyzed via Matlab/Simulink simulation tool.Research conclusions:(1)The power quality based on centralized AC-DC-AC power solution can satisfy the railway power supply requirements.(2)Centralized AC-DC-AC power is applicable to railways where the public power supply is difficult to get.

关 键 词：铁路供电 集中式电力供电 交直交电源 MATLAB/SIMULINK 

分 类 号：U223[交通运输工程—道路与铁道工程]