城市轨道交通电气火灾监控系统误报警分析及治理

Analysis of Electric Fire Monitoring System False Alarm in Urban Rail Transit and Treatment

依据某城市轨道交通车站剩余电流式电气火灾监控系统误报警的实际数据,对回路固有漏电、施工不规范及N极开关选型不当等可能导致电气火灾监控系统误报警的因素进行了具体分析,并总结了各类误报警所对应的排查治理办法。最后,阐述了对城市轨道交通项目电气火灾监控系统设计方案的改进意见,并对电气火灾监控系统的施工和弱电系统转换开关的选型提出了建议,供后续项目参考。

In view of the false alarm data issued by the residual current type electric fire monitoring system at a rail transit station,factors that may lead to false alarm such as the inherent leakage current,non-standard construction,improper selection of N-pole switches and so on are analyzed in detail,corresponding check methods and treatments to all kinds of false alarm are summarized.Finally,improvements for the design of electric fire monitoring detector installed at urban rail station are expounded,suggestions for the construction of electrical fire monitoring system and the selection of switch types in the weak electricity system are proposed to provide reference for future projects.