高光强的全光纤电流互感器设计  

Fiber-optic current transformer with high magneto-optical coefficient

作　　者：关鹏宇 杨耿煌[1] 董建 湾世伟 湾晓文 GUAN Pengyu;YANG Genghuang;DONG Jian;WAN Shiwei;WAN Xiaowen(School of Automation and Electrical Engineering,Tianjin University of Technology and Education,Tianjin 300222,China;Yangzhong Zhirong Power Technology Co.,Ltd.,Zhenjiang 212000,China)

机构地区：[1]天津职业技术师范大学自动化与电气工程学院,天津300222 [2]扬中智容电力科技有限公司,镇江212000

出　　处：《天津职业技术师范大学学报》2022年第2期36-40,共5页Journal of Tianjin University of Technology and Education

基　　金：天津市自然科学基金绿色通道项目(18JCYBJC43600)。

摘　　要：针对传统电磁互感器结构复杂,抗干扰能力差的问题,设计了一种基于全光纤光学干涉的全光纤电流互感器,用于测量高电压情况下的电流,其可在散杂磁场、温度和电压波动的干扰下,精准测量电流,同时体积小,可集成化。设计的全光纤电流互感器由光电及信号处理单元和传感单元组成,在光电单元中使用光纤环形器提高光束的效益。经实验检测,在室温条件下,额定电流2 000 A可以实现0.2和5P30级的准确测量;在温度循环、抗散杂磁场干扰、电压变化干扰时,均可正常工作,测得数据满足国家标准互感器测量准确度。To address the problems of complex structure and poor interference immunity of traditional electromagnetic transformers,a fiber-optic current transformer based on all fiber optical interference is designed to measure the current under high voltage,which can accurately measure the current under the interference of stray magnetic field,temperature and voltage fluctuations,while being small in size and can be integrated. The all fiber-optic current transformer designed in this paper consists of photoelectric and signal processing units and a sensing unit,and uses a fiber optic circulator in the photoelectric unit to improve the effectiveness of the beam. The experimental results show that the rated current of 2,000A can achieve accurate measurement of 0.2 and 5P30 levels at room temperature,it can work normally in temperature cycle,against stray magnetic field interference and voltage change interference,and the measured data meet the national standard instrument transformer measurement accuracy.

关 键 词：全光纤电流互感器(FCT) 法拉第磁光效应 安培环路定律 

分 类 号：TN452[电子电信—微电子学与固体电子学]