基于分布式光纤的电缆温度在线监测系统设计

Design of Cable Temperature On-Line Monitoring System Based on Distributed Optical Fiber

分布式光纤测温技术中的光纤本身既是温度传感器又是温度的传输媒介的特性,特别适用于电力系统的高压电缆等高压电气设备温度的在线监测。介绍了一种分布式光纤温度在线监测系统的设计方法,系统包括测温光纤、光电监测及信号处理电路部分和主机等硬件设施,通过在线监测软件实现了对电缆局部温度过热的监测、定温报警、温升报警和特性曲线的显示等功能,达到了对高压电缆等高压电气设备的实时在线监测的目的。

The characteristic that the distributed optical fiber in temperature test technology itself is both a temperature sensor and a tempera- ture transmission media is especially adaptable for temperature on-line monitoring of high-voltage equipment, such as high-voltage cable etc. In- troduction was made to a kind of design method of distributed optical fiber temperature on-line monitoring system. The system included tempera- ture test optical fiber, photoelectricity monitoring and signal processing circuits and main machine ete hardware facility. The on-line monitoring software realized monitoring, constant temperature alarming, temperature rising alarming and characteristics displaying of overheat partial cable etc functions, which achieves on-line monitoring for high-voltage cable etc high-voltage electrical equipment.