城市轨道交通动力电缆火灾探测方案研究

轨道交通动力电缆过热是引起电气火灾重要的原因之一,监控动力电缆的运行温度,防止其因温度过高而引起火灾十分重要。本文结合感温电缆的实际运行情况,分析分布式光纤和光纤光栅探测技术,并进行横向对比,提出了适用于轨道交通动力电缆火灾探测的方案,具有很好的工程实用价值。

Overheating of power cables for rail transit lines are an important causes of electrical fire.It is very important to monitor the operating temperature of power cables and prevent fire caused by excessive temperature.Combined with the actual operation of temperature sensing cable,the paper analyzes the distributed optical fiber and fiber Bragg grating detection technology,makes a horizontal comparison,and puts forward a scheme suitable for rail transit power cable fire detection,which has good engineering practical value.