摘要
介绍了法拉第磁光效应光学电流互感器(optical current transformer,OCT)的基本原理,在分析其实用化问题的基础上提出了自愈OCT技术,有效地提高了OCT的测量精度和运行稳定性。根据IEC60044-8标准,对设计的自愈OCT进行性能测试,试验结果表明研制的样机具有很好的测量线性度,在-40～+60℃的温度范围内,稳态测量精度优于0.2%。多年的工程应用情况表明,自愈OCT测量持续准确,精度明显高出常规电流互感器,具有工程实用化前景。
A type of optical current transducer （OCT） of Faraday magnetooptic effect is introduced. From an aspect of prac tical utilization for OCT, the selfhealing OCT is proposed to greatly improve the measuring accuracy and operation stabili ty. According to the standard of IEC 600448, the performance of OCT is validated by detail tests. The results indicates that the proposed OCT has a good linear measuring ability, and the steady state measuring accuracy is better than 0.2% for the temperature range from 40 °C to ＋ 60°C. The field data for several years shows that the proposed OCT has successive measuring accuracy, and its measuring precision is higher than the traditional current transformer. The designed OCT has practical value for engineering application.
出处
《广东电力》
2012年第1期100-104,共5页
Guangdong Electric Power
关键词
自愈光学电流互感器
法拉第磁光效应
温度漂移
运行稳定性
工程应用
self-healing OCT
Faraday magneto-optic effect
temperature drift
operation stability
engineering application
