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1问题提出在北京枢纽的自动闭塞和车站电码化改造过程中,北京东站对星火方向半自动闭塞接近区段的长度为1700m,此区段需要进行25Hz相敏轨道电路叠加ZPW-2000A电码化改造。在正常情况下,道碴电阻为1·0Ω·km并安装补偿电容时,轨道区段入口电流能满足电化区段机车信号接收灵敏度
1 PROBLEM PROBLEMS During the automatic blockage of Beijing hub and the station codeization process, the length of Beijing East Railway Station near semi-automatic occlusion of Spark direction is 1700m. This section needs to be modified with 25Hz phase-sensitive track circuit superimposed ZPW-2000A . Under normal conditions, when the ballast resistance is 1.0Ω · km and the compensation capacitor is installed, the orbital section inlet current can meet the electromotive sensitivity of locomotive signals