为解决轨道电位和杂散电流治理措施开展现场验证难度大的问题,轨道电位硬件动态模拟平台近年来获得了广泛关注。但现有硬件动态模拟平台通常仅考虑走行轨纵向电阻变化,忽略了列车运行工况和走行轨-大地过渡电阻的影响,无法准确再现轨道电位随列车运行工况的动态规律。为此,本文提出一种考虑列车运行工况的轨道电位硬件动态模拟平台。首先通过直流牵引供电系统模型分析了列车运行工况对轨道电位的影响,根据接触网、走行轨及走行轨-大地过渡电阻的变化特性,研究了包括低阻模块(LRM)与高阻模块(HRM)的轨道电位硬件动态模拟平台工作原理和数学模型,并提出了考虑列车运行工况的硬件动态模拟平台控制策略。最后通过仿真和实验结果验证了本文相关理论和控制策略的正确性。

In view of the field verification challenges of rail potential and stray current mitigation measures, the rail potential hardware dynamic emulator (RPHDE) has received extensive attention in recent years. However, the existing RPHDEs generally consider the rail longitudinal resistance by ignoring the influence of train operation conditions and rail-to-earth resistance, so it cannot accurately reproduce the dynamic rail potential distribution along the line. Therefore, a novel RPHDE considering the train operating condition is proposed. This paper firstly analysis the influence of train operating conditions on rail potential with the DC traction power supply system model. Then based on dynamic characteristics analysis of the catenary, running rails and rail-to-earth resistance, the operation principles and mathematical model of proposed RPHDE are studied in detail. Moreover, the corresponding control strategies of RPHDE by considering the train operating condition is also proposed. Finally, the simulation and experimental results verify the correctness of the abovementioned theorical analysis and control strategies.

TM 922.3

国家自然科学基金项目（面上项目，重点项目，重大项目）