基于直流远供技术的市域快线LTE远端设备供电方案研究

Research on the Power Supply Scheme for LTE Remote Equipment on Urban Rapid Transit Lines Based on DC Remote Power Supply Technology

[目的]针对市域快线长大区间设备供电需求,传统城市轨道交通区间的WLAN(无线局域网络)、TD-LTE(分时长期演进)远端设备的点对点、交叉冗余供电方式,存在线缆浪费、电力资源损耗、冗余度低等问题。[方法]尝试提出运用直流远供技术解决电力资源远距离输送,进而优化长大区间远端设备供电方案。[结果及结论]直流远供技术可以满足市域快线长大区间供电需求,单点故障不会造成无线通信中断,可进一步提升供电系统冗余度、可靠性。设备配备的监控子系统,可同步纳入信号微机监测系统,以实现供电系统闭环管理。

[Objective]With regard to the equipment power supply demand for long-distance section of urban rapid transit lines,the traditional point-to-point and cross-redundant power supply method for remote equipment in urban rail transit sections with WLAN(wireless local area network)and TD-LTE(time division long term evolution)exhibits various defects such as cable waste,power resource wastage,and low redundancy.[Method]A resolution of using DC remote power supply technology for the long-distance power resource transmission is put up,thereby optimizing the power supply scheme for the remote equipment in long-distance sections.[Result&Conclusion]The DC remote power supply technology can meet the power supply demand for long distance section of urban rapid transit lines,and a single point failure will not cause interruption of wireless communication,thus further improve the redundancy and reliability of the power supply system.The monitoring subsystem installed in the equipment can be synchronously integrated into the signal microcomputer monitoring system to realize the closed-loop management of the power supply system.