摘要
针对光纤光栅(FBG)电流互感器容易受到温度影响这一特性,设计了一种基于STM32单片机的光纤光栅电流互感器温度补偿系统。通过单片机实现PID自适应控制算法,锁定电流互感器输出的电压值恒定在静态工作点,从而实现电流互感器不受外界温度影响得到稳定的电流信号输出。实验结果表明,在22~39℃范围内,输出电压稳定度在±1%以内,解决了电流互感器受限于环境温度的问题,实现了电流与温度的同时测量。经过此方法改进后的电流互感器测量精度高、系统结构简单、成本低、可靠性高,加快了光纤光栅电流互感器的实用化进程。
Under the influence of temperature change,the measurement performance of FBG current transformer is reduced.To improve this performance,a temperature compensation system based on single chip microcomputer is designed.PID adaptive control algorithm is realized through single-chip microcomputer.The output voltage value of current transformer is constant at the quiescent operation point,so that the current transformer obtains stable current signal output without the influence of external temperature.The experimental results show that the stability of output voltage is within±1%from 22℃to 39℃,which solves the problem that the current transformer is limited by environmental temperature,and realizes the simultaneous measurement of the current and temperature.The designed current transformer has high measurement accuracy,simple system structure,low cost and high reliability,which is more conducive to the practical production and marketization of fiber Bragg grating current transformer.
作者
施磊
王珊珊
宋友
顾然
SHI Lei;WANG Shan-shan;SONG You;GU Ran(Wuhan NARI Limited Liability Company State Grid Electric Power Research Institute,Wuhan 430074,China)
出处
《测控技术》
2020年第9期60-63,共4页
Measurement & Control Technology
基金
国家自然科学基金青年科学基金项目(51607049)
黑龙江省自然科学基金项目(F2016022)。
