地铁直流牵引供电回路电气参量的数值计算  

Numerical Calculation of Electrical Parameters in DC Traction Power Supply Loop

作　　者：王奎鹃[1] 李夏青[2] 田行军[3] 闫明富[1] 史金京 

机构地区：[1]北京化工大学,北京硕士研究生100029 [2]北京石油化工学院,北京102617 [3]北京航空航天大学,北京100191 [4]北京地铁运营技术研发中心,北京102208

出　　处：《城市轨道交通研究》2014年第6期30-36,共7页Urban Mass Transit

摘　　要：准确掌握直流牵引供电回路的电气参量及其变化规律,是研究直流牵引供电系统电磁暂态特性和提高牵引供电系统稳定性的基础。回路电气参量与钢轨规格、负荷电流、地铁隧道等多种因素有关,造成其复杂的模型难以定解。针对此问题,建立了钢轨和地铁隧道的物理模型,提出利用非线性函数逼近原函数和模块化处理的方法,并开发适合工程计算的软件。典型的实测数据证明,利用该计算方法开发出的软件不仅原理清晰、操作简便,而且计算精度理想。To grasp accurately the electrical parameters DC traction power supply circuit and the rule of their variation is the foundation for the research on electromagnetic transient characteristics of DC traction power supply system,and for the improvement of traction power supply system stability.The loop electrical parameters are related with rail specification,load current,subway tunnel and so on,making it difficult for solutions even by establishing a complexity model.Against this problem,a physical model of rail and subway tunnel is established,nonlinear function approximate to the original function method and modular processing method are proposed,a software suitable for engineering calculations is developed.As is proved by the typical measured data,the software developed by this calculation method has not only the advantages of clear principle and easy operation,but also achieves the ideal calculation accuracy.

关 键 词：地铁 直流牵引供电 回路电气参量 牵引负荷电流 数值计算 

分 类 号：U231.8[交通运输工程—道路与铁道工程]