中文摘要：

重载铁路站内轨道电路由于处在复杂的线路网络中,保证其正常工作并且防护强牵引电流干扰非常重要。扼流适配变压器作为轨道电路中强弱电的结合部分,特别是在重载电气化铁道中起着非常关键的双重作用。因此,扼流适配变压器的模型及其四端网参数的研究对牵引电流建模、轨道电路工作状态计算、保证铁路系统的安全运营,具有十分重要的意义和价值。

英文摘要：

Heavy haul railway station track circuit is in the severe environment with complicated line networks, so it is very important to ensure its normal operation. The impedance bond, combining track circuit system and power supply system, plays a crucial role in the heavy haul electrifi ed railway. Thus, the research on the model of the impedance match bond and four terminal network parameters is of great signifi cance and value for modeling the traction current, calculation of the track circuit working state and safe operation of railway systems.