石太客运专线跳变HU码原因及对策分析

Causes and Countenneasures of Jumping HU Code Shijiazhuang-Taiyuan PDL

石太客运专线SEI信号系统采用UM2000轨道电路,由于设计原因,在当前车流密度增大情况下,当列车运行至进站外方第2个区段时由U2码跳变为HU码的降级非常严重,经常造成运行中的列车突然停车,极大地影响了石太客专的正常行车秩序。经修改采集电路后,彻底解决了该问题。

The UM2000 track circuit of SEI Signal system is used for Shijiazhuang-Taiyuan passenger special line.Due to design reasons,the degradation of code U2 jumping into code HU is too serious and a running train may stop suddenly when a train runs into the second section ahead of the station under the current condition of traffic density so that the normal traffic order of the line would be affected seriously.After modifying the data collection circuit,the problem has been completely solved.