摘要
提出了基于传输线法建立高速铁路贯通地线的等效电路模型,根据电磁场理论确定等效电路模型中各分布参数具体数值的计算方法。在ATP-EMTP中计算分段导体长度不同时,2根平行贯通地线上轴向电压峰值分布情况。通过与CDEGS中仿真结果的对比,得到雷电流作用下基于传输线法的贯通地线等效电路模型中分段导体长度选取的最佳值。研究结果表明当分段导体长度为4 m时,计算误差最小,能够满足工程应用的要求,也验证了本文研究方法和研究结果的有效性。
The equivalent current model of high-speed running-through earth wire based on transmission line method is put forward, and the calculation method of different distributed parameters in equivalent current model is defined by electromagnetic field theory. The axial peak voltage distributions of the two parallel running-through earth wires are calculated in ATP-EMTP when segmented conductors are different in lengths. The optimum values for selecting lengths of segmented conductors in equivalent current model based on transmission line method can be obtained by comparison between calculation results and CDEGS simulation results. The research results show that the calculation error is smallest when the length of segmented conductor is 4m and is able to meet the requirements of engineering applications And these also verify that the research methods and results in this paper are effective.
出处
《电气化铁道》
2015年第3期31-35,共5页
Electric Railway
关键词
高铁防雷
传输线法
贯通地线
均匀分段导体
轴向电压
Lightning protection of high-speed railway
transmission line method
running-through earth wire
uniform segmented conductor
axial voltage
