摘要
在电气化铁道中，钢轨既是机车牵引电流回流的通道，又是自动闭塞系统传输信息的通道，两者之间存在着电磁兼容性的问题。本文首先介绍了一种现场模拟产生大牵引电流的方法，然后在实测数据的基础上，分析了钢轨回流随牵引电流的变化关系．根据轨流在一定范围内随牵引电流呈线性变化这一关系，可以在己有测试数据的基础上预测出重载运输牵引电流下，钢轨回流的大小，确定沿线扼流变压器容量的配置。这为扼流变压器容量的预先配置计算奠定了电流特性方面的理论基础。
Since rail is not only a return path of traction current for locomotives on an electrified railway,but also the transmitting channel of information for automatic block system, there is EMC problem between the two Systems.According to the linear relationship between traotion return current in rails and traction current in electrified line within certain limits,the maximum traction return current in heavy-load railway transportation could be predicted under condition of maximum traction current,and the capability of an impedance bond for a track circuit of automatic block system from the maximum traction return current in rails could also be estimated.
出处
《北方交通大学学报》
CSCD
北大核心
1994年第2期265-271,共7页
Journal of Northern Jiaotong University
关键词
电气化铁道
牵引电流
扼流变压器
ss:electrified railway
loop current
linear regressions
