摘要
SPT电缆是实现ZPW-2000A轨道电路系统室内外设备信号传输的重要器件,其阻抗特性显著影响轨道电路信号传输质量。用轨道电路传输计算的方法,在系统研究电缆长度对ZPW-2000A轨道电路功出端口输入阻抗特性影响规律的基础上,进一步在功出端口附近采用串入电感器的方式优化轨道电路传输通道。研究表明:随电缆长度的增加,轨道电路功出端口输入阻抗由感性向容性转变,导致发送器能耗增加;而依据不同载频和电缆长度,通过采用串入电感器的方法可优化轨道电路传输通道质量,提高发送器功出能效。
SPT cable is an important device used to transmit the signals of indoor and outdoor equipment of the ZPW-2000A track circuit system.Its impedance characteristics significantly influence the signal transmission quality of the track circuit.With the transmission calculation method for the track circuit,the series inductors near the output port are used to further optimize the transmission channel of the track circuit,following a systematic study on the influence of the cable length on input impedance characteristics of the output port of the ZPW-2000A track circuit.According to the study,with the increase of the cable length,the input impedance of the output port of the track circuit changes from inductive to capacitive,resulting in the increase of transmitter energy consumption;meanwhile,depending on different carrier frequencies and cable lengths,the transmission channel quality of the track circuit and the output energy efficiency of the transmitter can be improved by using series inductors.
作者
温术来
于树永
赵寰宇
范家斌
WEN Shulai;YU Shuyong;ZHAO Huanyu;FAN Jiabin(CRSC(Beijing)Industry Group Co Ltd Beijing Railway Signal Co Ltd,Beijing 102613,China)
出处
《中国铁路》
2021年第10期119-125,共7页
China Railway
