基于多折线外特性模型的直流牵引供电系统稳态短路计算  

Steady-state Short-circuit Calculation of DC Traction Supply System Based on Polygonal External Characteristic

作　　者：刘炜[1] 李群湛[1] 李良威[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《机车电传动》2008年第1期61-64,共4页Electric Drive for Locomotives

摘　　要：直流牵引供电网络故障分析对城市轨道交通牵引供电系统设计有着重要的作用。针对整流机组,采用多段折线的外特性模型,使用变化理想电压源、内阻的戴维南等效电路模拟,并通过迭代的方法确定短路时的工作区间。建立了包括杂散电流收集网在内的供电系统仿真模型,可较准确地仿真短路时各整流机组负荷以及接触网、钢轨与杂散电流收集网电位等的变化情况。The fault analysis of DC traction power supply system is important for the design of mass transit power supply system. For the rectifier, with the polygonal external characteristic model, the working range during the short circuit is determined by using Thevenin＇s Equivalent Circuit simulation of variation of ideal power supply and internal resistance and by way of iterative method. The simulation model of the power supply system is built, with the stray current mat included. The variation of the rectifier load, the catenary, rail and stray current mat can be simulated correctly.

关 键 词：城市轨道交通 整流机组 稳态短路计算 供电系统 直流牵引 

分 类 号：U223[交通运输工程—道路与铁道工程]