区间轨道电路分路不良情况下的防护处理研究

Research on Protection Process when Section Track Circuit in Bad Shunting Status

在CTCS-2级列控系统中,区间轨道电路有可能发生分路不良的情况。若列控中心不能及时做出判断并作出处理,可能会使闭塞分区低频码序和信号机显示错误升级,危及行车安全。文章引入联锁中的"三点检查"概念,设计出一种有效的防护算法,实现列车在区间走行过程中轨道电路发生分路不良情况下,列控中心通过改变闭塞分区码序和信号机显示,可判断出分路不良发生的位置并作出相应防护措施,避免了事故的发生,充分保障了行车安全。

Section track circuit may be possible in bad shunting situation in CTCS -2 system. In that case, the low-frequency code order and the signal aspect might update incorrectly if the train control center fails to deal with the situation quickly enough. By introducing concept of ＂inspection on three points＂ from interlocking, the paper designs an effective algorithm so that the train control center can detect the bad shunting track circuit and take steps of protection by changing blocking zone code and signal indication, thus to prevent accidents and secure traffic safety when a train run into bad shunting.