光学电压传感器温度响应特性分析与实验研究  

Analysis and experimental study on temperature response characteristics of optical voltage sensor

作　　者：陈胜硕 胡杰祥 李志 康世佳 李岩松[1] 刘君[1] Chen Shengshuo;Hu Jiexiang;Li Zhi;Kang Shijia;Li Yansong;Liu Jun(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China;State Grid Fujian Electric Power Co.,Ltd.,Fuzhou Power Supply Company,Fuzhou 350009,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]国网福建省电力有限公司福州供电公司,福州350009

出　　处：《电子测量与仪器学报》2023年第3期169-178,共10页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(51277066)项目资助。

摘　　要：光学电压传感器面临温度稳定性问题。本文以BGO晶体的Pockels效应模型为基础,结合热光效应等推导出光学电压传感器在多物理场作用下的温度响应模型,并对输出信号进行频谱分析,得到温度对传感器输出的影响规律,即由温度引起的输出漂移属于低频分量。在卡尔曼滤波降噪的基础上,提出了一种基于频谱分析的高通滤波温度补偿方法,通过滤除低频分量提高温度稳定性,并进行标定实验和温度响应特性实验。实验结果表明,传感器在[0℃,50℃]温度范围内输出电压测量精度优于±1.79%,与同平台下BP神经网络温度补偿方法进行对比,该方法易于实现且有效地抑制了温度漂移的影响。Optical voltage sensors face the problem of temperature stability.Based on the Pockels effect model of BGO crystal and the thermo-optic effect and so on,the temperature response model of the optical voltage sensor under the action of multi-physical fields is derived and the spectrum analysis of the output signal is carried out to obtain the effect law of temperature on the output of the sensor,i.e.,the output drift caused by temperature belongs to the low frequency component.Based on the Kalman filtering noise reduction,a high-pass filtering temperature compensation method based on spectral analysis is proposed to improve the temperature stability by filtering out the low frequency components,and calibration experiments and temperature response characteristics are conducted.The experimental results show that the accuracy of the output voltage measurement is better than±1.79%in the temperature range of[0℃,50℃],and the method is easy to implement and effectively suppresses the influence of temperature drift when compared with the BP neural network temperature compensation method in the same platform.

关 键 词：光学电压传感器 温度稳定性 高通滤波 POCKELS效应 热光效应 

分 类 号：TN98[电子电信—信息与通信工程] TM933[电气工程—电力电子与电力传动]