环氧树脂胶封的光纤传感器功能优化与变压器温度测量技术  

Optimization of the functionality and transformer temperature measurement technology of epoxy resin-sealed optical fiber sensors

作　　者：张琦 ZHANG Qi(Yancheng Power Supply Branch of State Grid,Yancheng 224000,Jiangsu China)

机构地区：[1]国网盐城供电公司,江苏盐城224000

出　　处：《粘接》2023年第9期155-158,共4页Adhesion

摘　　要：针对传统电网系统变压器温度测量精度低的问题,提出一种基于光纤传感器的变压器温度测量技术。采用环氧树脂封装的方式构建光纤布拉格光栅传感器(FBG),对变压器绕组的热点温度和油位进行测量,并选择适宜的光学元件进行变压器绕组热点温度测量系统硬件搭建;采用FBGA调解模块处理检测的光信号,通过USB接口连接系统硬件与上位机进行通信,最终实现温度和油位波长显示。结果表明:进行4次测温实验后,测量结果与实际温度值的误差保持在0.19~0.42℃,系统多次误差均控制在0.5℃以下。可实现变压器温度准确测量,采用光纤光栅传感器的温度测量精确度较高;实现温度报警降低事故发生率。A transformer temperature measurement technology based on fiber optic sensors is proposed to address the low accuracy of transformer temperature measurement in traditional power grid systems.Firstly,the fiber Bragg grating sensor(FBG)is constructed using epoxy resin encapsulation.Then measure the hot spot temperature and oil level of the transformer winding,and select suitable optical components to build the hardware of the transformer winding hot spot temperature measurement system.FBGA mediation module is used to process the detected optical signal.Finally,the system hardware is connected to the upper computer through a USB interface for communication,ultimately achieving temperature and oil level wavelength display.The experimental results show that after four temperature measurement experiments,the error between the measurement results of this system and the actual temperature value remains within the range of 0.19℃~0.42℃,and the system s multiple errors are controlled below 0.5℃.This indicates that this system can achieve accurate measurement of transformer temperature,and the temperature measurement accuracy using fiber Bragg grating sensors is high,which can achieve temperature alarm and reduce the incidence of accidents.

关 键 词：环氧树脂胶 光纤传感器 变压器 温度测量 FBG 上位机 

分 类 号：TQ342.82[化学工程—化纤工业]