摘要
为了获得较大的监控范围,铁路沿线及站场的视频监控设备一般架设在30 m铁塔上部。当铁塔接闪雷电后,雷电流会通过感应耦合和地电位反击方式引起视频监控设备故障,并沿线缆侵入设备机房,造成机房内部其他设备损坏。通过研究一起典型的视频监控系统雷害故障,分析了雷电流的侵入途径,给出了视频监控设备和机房内其他设备的损坏原因,并提出了在视频接线箱架设方式、浪涌保护器设置及合理布线等方面的优化建议。
In order to obtain a larger monitoring range,the video monitoring equipment along the railway,the station and yard is installed on the top of the 30 m tower.After the tower is connected with lightning,the lightning current could cause the failure of video monitoring equipment through induction coupling and ground potential counterattack,and invade the equipment room along the line,which would result in the failure of other equipment in the room.A typical video monitoring system lightning fault is studied.The intrusion path of lightning current is also analyzed and the damage reasons of video monitoring equipment and other equipment in the machine room are given.In addition suggestions on the erection mode of video junction box,SPD setting and reasonable wiring are put forward.
出处
《铁道通信信号》
2023年第4期53-57,共5页
Railway Signalling & Communication
关键词
视频监控系统
铁塔
浪涌保护器
数字调度通信
设备故障
Video monitoring system
Tower
Surge protective device(SPD)
Digital dispatching communication
Equipment fault
