光纤环保温腔体设计及其性能分析  

Design and Performance Analysis of a Fiber Optic Ring Heat-off Spool

作　　者：杨汉瑞[1] 杨燕[1] 黄蔚梁 刘晶晶[1] 李勇勇[1] 

机构地区：[1]东北电力大学自动化工程学院,吉林132012

出　　处：《光子学报》2017年第11期83-91,共9页Acta Photonica Sinica

基　　金：吉林市科技发展计划(No.20156404);东北电力大学博士科研启动基金(No.BSJXM-201419)资助~~

摘　　要：为了改善光纤电流互感器温度性能,设计了引入保温腔体的光纤环传感头结构.在光纤环受温度扰动引起的热致相位差基础上,推导并建立了光纤电流互感器系统输出误差离散化数学模型,利用有限元分析软件分别建立了光纤环自身和光纤环配合保温腔体的有限元模型,仿真分析了在不同温度载荷下,保温腔体的热性能和采用设计的传感头光纤电流互感器的温度性能.仿真实验结果表明:所设计的保温腔体能有效控制光纤环中各匝光纤的温度变化范围,减缓光纤的温变速率,均化光纤环温度场;采用设计的传感头的光纤电流互感器系统输出误差范围明显减小,有效提高了系统测量精度.这对高精度的光纤电流互感器的制作和应用具有重要意义.A sensor head design scheme by adding a heat-off spool to the fiber coil is studied to improve the Fiber Optic Current Sensor （FOCT） temperature performance which is vital to the precision of FOCT. The discretized mathematical model of the output error of the FOCT system is deduced and established based on the thermal phase difference caused by the temperature disturbance of the fiber coil. Then, the finite element model of the fiber coil itself and the fiber coil with the heat-off spool is established respectively by using the finite element analysis software, and the thermal performance of the heat-off spool and the temperature performance of the FOCT with new sensor head under different temperature loading schemes are simulated and analyzed. Simulation results show that the heat-off spool actually can control the temperature change range of each fiber in the fiber coil, slow down the temperature change rate of the fiber, equalize the temperature field of the fiber coil. Besides, the output error range of FOCT system with the proposed sensor head is obviously reduced, and the system measurement accuracy be improved effectively, which is important for the high-precision FOCT＇s production and application.

关 键 词：光纤电流互感器 热致相移 保温腔体 有限元法 温变速率 

分 类 号：TM452[电气工程—电器]