直流牵引供电系统电感参数及短路电流计算分析  

Analysis of Inductance Parameters and Short Circuit Current Calculation of DC Traction Power Supply System

作　　者：陈国[1] 刘琛 何俊文[1] CHEN Guo;LIU Chen;HE Junwen

机构地区：[1]中铁第四勘察设计院集团有限公司电化处

出　　处：《电气化铁道》2020年第4期79-81,共3页Electric Railway

摘　　要：直流牵引供电系统短路计算是城市轨道交通供电设计中的关键过程,本文通过设计资料和实测数据构建了牵引供电回路中电气参数的计算模型,得到一种城轨牵引供电系统直流短路计算工程模型,对模型中的等效电感参数进行详细分析,推导出模型中等效电感及时间常数T随短路电流和短路位置点变化的规律,并通过现场实测验证了该模型的正确性,为城市轨道交通直流牵引供电系统设计提供参考。Short-circuit calculation of DC traction power supply system is a key process in power supply design of urban rail transit. The paper obtains an engineering model for calculation of DC short circuit for traction power supply system for urban rail transit after establishing of a calculation model of electrical parameters in traction power supply circuit on the basis of design document and tested data, analyzes in details the equivalent inductance parameters in the model, derives the regularities of the equivalent inductance and the time constant T along with the variation of short circuit and short circuit positions. The correctness of the model had been verified through tests at site and it is able to provide reference s for design of DC traction power supply system for urban rail transit.

关 键 词：牵引供电系统 短路计算 工程模型 

分 类 号：U223.2[交通运输工程—道路与铁道工程]