关于ZPW-2000A轨道电路小轨出电压呈正弦波动探讨  

Discussion on Small Rail Feeding out Voltage Sine Wave of ZPW-2000A Track Circuit

作　　者：唐敦辉 Tang Dunhui(Guangzhou Signaling&Communication Depot,China Railway Guangzhou Group Co.,Ltd.,Guangzhou 510665,China)

机构地区：[1]中国铁路广州局集团有限公司广州电务段,广州510665

出　　处：《铁路通信信号工程技术》2022年第5期101-103,共3页Railway Signalling & Communication Engineering

摘　　要：普速线路采用小轨道纳入联锁的ZPW-2000A制式轨道电路,当电路中存在同频干扰信号时,对小轨道电压造成周期性正弦波动,造成小轨出电压在信号集中监测上长期超限报警,因此小轨道电压异常会直接导致区间红光带故障,影响行车安全。结合处理实践,针对同频干扰产生的原因进行分析,提出查找同频干扰的基本思路与步骤,方便现场信号人员查找并解决同频干扰造成小轨出电压值呈周期性正弦波动问题。The conventional railway adopts ZPW-2000A track circuits with small rail included in the interlocking system.When there are interference signals with the same frequency in the circuit,the periodic sine wave of the small rail voltage occurs and long-term over-limit alarm of small rail feeding out voltage is caused in the microcomputer monitoring system.The abnormal voltage will directly lead to red light strip in section,which will aff ect the safety of train operation.Combining with the processing practice,this paper analyzes the causes of the same frequency interference,and puts forward the basic ideas and steps to fi nd the same frequency interference,which is convenient for the fi eld personnel to fi nd and solve the problem of periodic sine wave of small rail feeding out voltage caused by the same frequency interference signal.

关 键 词：小轨道 同频干扰 周期性正弦波动 红光带故障 

分 类 号：U284.2[交通运输工程—交通信息工程及控制]