摘要
本文以钢轨为研究对象,撇开了传统的传输线方程,从场的角度出发,利用MAXWELL方程推导出了直供牵引网钢轨电流分布的数学模型。该模型考虑了直供牵引网的各种耦合因素.另外还对牵引网频响、大地电位等因素进行了讨论.该方法适合于多介质层大地情况.模型在SIEMENS 7570C计算机上给出了数值解,并在山西省阳高至王官人屯区段进行了现场测试.从理论分析和实测数据比较来看,曲线基本吻合,满足精度要求.
Based on the conventional transmission line theory, the model of rail current cannot be created very well. This paper puts forward the mathematical model from the view of both field and circuit. The earth effect is taken into consideration. The model can be applied to not only homogeneous but also multi-layer earth. In addition, many factory such as the re■istive, inductive and capacitive coupling, the earth potential and the frequency response of the traction system, are considered. The strategy of using the model to produce needed results is also given in this paper. The results of the theoretical analysis are found by the contrast between the test result and the theoretical result.
出处
《北方交通大学学报》
CSCD
北大核心
1991年第3期68-76,共9页
Journal of Northern Jiaotong University
关键词
钢轨
电流
数学模型
电气化铁道
electrified railway
rail
current
mathematical model
