Abstract: In order to upgrade the signaling equipment of Guangzhou-Shenzhen Line I and Line II and avoid the "red light strip" failure caused by the low resistance value of the existing track bed in the station, this paper conducts a research on the adaptability of the low track bed of ZPW-2000A integrated track circuit in the station. Through testing and simulation calculation and analysis of the field operation data of ZPW-2000A integrated track circuit in the station after upgrading the signaling equipment of Guangzhou-Shenzhen Lines I and Line II, the variation trend of voltage and current is the same between the simulation results and the measured values, and the simulated values are consistent with the measured values. According to the calculation with the lowest track bed resistance in the section, when the track bed resistance is 0.6 Ω·km, the limit length is 300 m. The simulation calculation and actual measurement show that the track bed in the station is suitable for the application conditions of ZPW-2000A integrated track circuit, and ZPW-2000A integrated track circuit is well applied in the field.

Key words: integrated track circuit in station, low track bed, adaptability research

摘要： 对广深线I、II线信号设备升级，为避免站内既有道床电阻值过低出现“红光带”故障，开展站内ZPW-2000A一体化轨道电路低道床适应性研究。通过对广深线I、II线进行信号设备升级后的站内ZPW-2000A一体化轨道电路现场运行数据进行测试和仿真计算分析，仿真结果与实测值电压和电流变化趋势相同，仿真值与实测值相一致。通过区段最低道床电阻计算，当道床电阻为0.6 Ω·km时，极限长度为300 m。经仿真计算与实测说明，站内轨道道床适应ZPW-2000A一体化轨道电路的应用条件，ZPW-2000A一体化轨道电路在现场应用良好。

关键词: 站内一体化轨道电路, 低道床, 适应性研究