摘要
某站多个区段频繁发生移频报警,经分析原因为列车在主轨慢速运行时小轨出现对比不一致情况,接收器产生移频报警。现场错误使用站内电码化发送检测器内移频报警电路作为控制电路,由于发送检测器C1电容容值较小,缓放时间较短,频繁产生移频报警信息。通过修改配线,采用衰耗器中的移频报警控制电路与移频报警继电器连接,增加缓放时间,解决了列车慢速通过主轨过程频繁发生移频报警的情况。
Multiple sections of a certain station frequently experienced frequency-shift alarms.After analysis,it was found that the small track circuits showed inconsistencies when trains passed over the main track circuits at slow speeds,which caused the receivers to generate frequency-shift alarms.On site,the frequency-shift alarm circuit in the coded transmission detector in the station was incorrectly used as the control circuit.Due to the low capacitance value of capacitor C1 of the transmission detector and the short time for slow release,frequency-shift alarm messages were frequently generated.By modifying the wiring and connecting the frequency-shift alarm control circuit in the attenuator to the frequency-shift alarm relay,the time for slow release was increased,thereby solving the problem of frequent frequency-shift alarms during the slow passage of trains over the main track circuits.
出处
《铁路通信信号工程技术》
2024年第S1期21-24,共4页
Railway Signalling & Communication Engineering
