光纤Bragg光栅传感器及其应用

基于光纤B ragg光栅(FBG)特点及传感原理,将其应用在电气设备的绝缘故障检测中。电气设备的绝缘故障发生之前,通常伴随热传递,而FBG对温度非常敏感,因而,可以通过FBG传感器监测温度来确定电气设备是否有绝缘故障发生。试验结果显示:FBG抗干扰能力强,可在恶劣环境下工作,且温度分辨力为0.1℃,能够得到较传统传感器更好的效果。介绍了一种通过监测温度来检测高压设备故障的方法,阐述了高压设备故障在线监测系统的功能和应用。

Sensor of fiber Bragg grating and its application

Based on its characters and principles of transduction,fiber Bragg grating(FBG) is used in insulative fault detecting of electrical devices.Heat always transfers before insulative fault arises in electrical devices;FBG is very sensible to temperature;it is used by monitoring the temperature to monitor whether insulative fault occurs in electrical devices.The test result shows that it has high anti-jamming ability,and it can work under complicated environment.It may work better than traditional sensors when the resolution of temperature is(0.1 ℃).A method of inspecting faults in high-voltage devices by monitoring the temperature is introduced,and functions and applications for on-line watching systems of high-voltage equipments' faults are expatiated.