摘要
高压电缆的温度会严重影响电缆的使用,通过表皮温度监测线芯内部温度情况,具有重要的意义。利用光纤光栅温度传感器,可以实现电缆温度的精确测量,通过分析其工作原理和解调机制,证明温度和光纤光栅中心波长具有一定线性关系。通过形状因子改进三芯电缆的标准关系,实现线芯温度与表皮温度间的方程构建,并证明其准确性。搭建光纤光栅实时测温系统,通过标定实验和误差分析,证明测温系统的有效性。通过实验验证,证明该测温系统能够有效实现高压电缆的温度测量,并对于异常状态电缆进行辨别。
The temperature of high-voltage cable will seriously affect the use of cable. It is of great significance to monitor the internal temperature of wire core through skin temperature. By analyzing its working principle and demodulation mechanism, it is proved that there is an obvious linear relationship between the temperature and the central wavelength of the fiber Bragg grating. The standard relationship of three core cable is improved by shape factor, the equation between core temperature and skin temperature is constructed, and its accuracy is proved. The fiber Bragg grating real-time temperature measurement system is built. Through 20 ~ 100 ℃ calibration experiment and error analysis, the effectiveness of the temperature measurement system is proved, and the linear relationship between temperature and central wavelength is verified. Through experimental verification, it is proved that the temperature measurement system can effectively realize the temperature measurement of high-voltage cable and distinguish the abnormal cable.
作者
丁杨
林孟豪
李泽伟
刘洋
DING Yang;LIN Menghao;LI Zewei;LIU Yang(State Grid Xinjiang Company Limited,Electric Power Research Institute,Urumqi 830000,China)
出处
《光学技术》
CAS
CSCD
北大核心
2023年第1期85-90,共6页
Optical Technique
基金
高干热典型环境联合实验室新电科[2021]60号
关键词
光纤光栅
实时测温
高压电缆
优化设计
Fiber Bragg grating
real time temperature measurement
high voltage cable
optimal design
