光纤环保温腔体设计及其性能分析

发布时间：2019-05-16 06:50

【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.
[Abstract]:In order to improve the temperature performance of optical fiber current transformer, the structure of optical fiber ring sensor head with thermal insulation cavity is designed. On the basis of the thermal phase difference caused by the temperature disturbance of the optical fiber ring, the discrete mathematical model of the output error of the optical fiber current transformer system is derived and established. The finite element models of the fiber ring itself and the thermal insulation cavity with the fiber ring are established by using the finite element analysis software, and the finite element models are simulated and analyzed under different temperature loads. The thermal performance of thermal insulation cavity and the temperature performance of optical fiber current transformer with designed sensor head. The simulation results show that the designed insulation cavity can effectively control the temperature variation range of each turn fiber in the fiber ring, slow down the temperature change rate of the optical fiber, and homogenize the temperature field of the fiber ring. The output error range of the optical fiber current transformer system with the designed sensor head is obviously reduced, which effectively improves the measurement accuracy of the system. This is of great significance to the manufacture and application of high precision optical fiber current transformer.
【作者单位】：东北电力大学自动化工程学院;
【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~~
【分类号】：TM452

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