摘要
针对高速铁路建设中出现的局部四线并行情况,为防止同载频并行轨道电路间干扰信号误动CTCS-3和CTCS-2级列控系统车载或地面设备,必须对干扰信号进行定量分析并采取防护措施。基于钢轨间的互感和线间距建立耦合干扰计算机仿真模型,定量分析近端干扰和调谐区位置不利情况下ZPW-2000A无绝缘轨道电路间的耦合干扰。分析结果表明:在等线间距条件下,调谐区对位比调谐区错位情况时耦合干扰电压大;耦合干扰电流随轨道并行长度和轨道电路载频频率增大而增大。以广深铁路并行四线为例计算同载频并行轨道电路对列控系统车载和地面设备的干扰量,并据此建议在线间距小于14 m时,对重合的调谐区改变并行区段轨道电路载频的频率或者进行调谐区错位处理。
Since the partial four-line parallel situations existed in the construction of high-speed railway,in order to prevent the undesired signals from the parallel track circuits with the same carrier frequency to incorrectly operate the onboard or the ground CTCS-3 and CTCS-2 equipments,the quantitative analysis on the interference signals must be carried out and the protective measures must be taken.Based on the mutual inductance between tracks and line spacing,the coupling disturbance computer simulation model had been established to quantitatively analyze the coupling disturbance from ZPW-2000A jointless track circuits in the conditions such as proximal interference and unfavorable tuning zone position.Analysis results show that,on the condition of the same line spacing,the coupling disturbance voltage is higher when the tuning zone is in the parallel position than that when the tuning zone is in dislocation.The coupling disturbance current increases with the growth of the parallel length of the track and the carrier frequency of the track circuit.Taking Guangzhou-Shenzhen parallel four-line as the example,the interference of the parallel track circuits with the same carrier frequency on the onboard and the ground train control system equipments was calculated.Based on this,it is proposed that the frequency of the track circuit carrier in the parallel tuning zone should be changed or the parallel tuning zone should be dislocated when the line spacing is shorter than 14 m.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2010年第3期99-106,共8页
China Railway Science
基金
国家科技支撑计划项目(2009BAG12A08)
关键词
并行轨道电路
同载频
耦合干扰
互感
近端干扰
广深铁路
四线铁路
Parallel track circuit
Same carrier frequency
Coupling disturbance
Mutual inductance
Proximal disturbance
Guangzhou-Shenzhen Railway
Four-line railway
