电力电缆火灾在线监测系统的设计

火电厂、变电站电力电缆长期运行在高电压、大电流环境下，其接头容易超温过热，引起爆炸，导致火灾，建立电力电缆火灾在线监测系统具有必要性。为此，介绍发电厂电力电缆火灾在线监测系统的总体设计，硬件结构及接口设计。该系统的现场子站设计采用了新型数字式温度传感器，不仅功能强、可靠性高，而且兼有耗能低，体积小的优点。

The design of on-line monitoring system of electric power cable

Because power cable of the power plant and substation works in a high voltage and large current working conditions for a long time so that the over temperature power cable connection would explode and fire easily. It is necessary to set up a on line power cable fire supervise system. This paper introduces the design of the hardware and the communication interface in the electric power cable on line monitoring system. A new digital temperature sensor is used in the scene work substation, it makes the system having much more functions, high reliability, low power consumption and small package.