补偿电容故障对ZPW-2000A轨道电路影响分析  

Analysis of Impacts of Compensation Capacitor Failure on ZPW-2000A Track Circuit

作　　者：罗颖 Luo Ying(Beijing Center of Research,Design&Test Co.,Ltd.,China Railway Signal&Commnication Engineering Bureau Group,Beijing 100070,China)

机构地区：[1]通号工程局集团北京研究设计实验中心有限公司,北京100070

出　　处：《铁路通信信号工程技术》2023年第5期92-96,共5页Railway Signalling & Communication Engineering

摘　　要：ZPW-2000A轨道电路超过300 m区段需要设置补偿电容,补偿电容可与钢轨的电感形成串联谐振,使钢轨趋于纯阻性,降低钢轨的阻抗,提高钢轨上信号传输的能量。补偿电容故障后,会影响轨道电路调整、分路、机车电流等轨道电路性能。通过轨道电路仿真计算平台,对电容断线、电容容值下降的故障情况下,轨道电路的性能进行定量分析,并得到电容故障后,轨道电路调整、分路、机车电流的变化规律。The sections longer than 300 m in ZPW-2000A track circuit need to be provided with compensation capacitance,which can have series resonance with rail inductance,makes the rail tend to be purely resistive,reduces the rail impedance,and increases the rail signal transmission energy.Any fault of the compensation capacitor can aff ect such track circuit performance indicators as track circuit adjustment,track circuit shunt and locomotive current.Utilizing the track circuit simulation calculation platform,this paper conducts quantitative analysis on the track circuit performance under the conditions of capacitor line breakage and capacitor capacitance drop,and proposes the change rules of track circuit adjustment,track circuit shunt and locomotive current after capacitor failure.

关 键 词：补偿电容 断线 容值降低 ZPW-2000A 轨道电路 

分 类 号：U284.2[交通运输工程—交通信息工程及控制]