基于电子剪切散斑干涉技术的光学电流互感器  

An Optical Current Transducer Based on the Electronic Speckle-shearing Pattern Interferometer

作　　者：张甦英[1] 王玉宏[1] 黄健[1] 

机构地区：[1]郑州电力高等专科学校,河南省郑州市450004

出　　处：《电力系统自动化》2007年第17期83-86,共4页Automation of Electric Power Systems

摘　　要：基于Faraday磁光效应的光学电流互感器的研制和试运行表明,光学电流互感器的应用能产生一定的经济效益和社会效益。作为对其应用范围的补充,提出基于电子剪切散斑干涉方法的光学电流互感器,并设计相应的磁场力敏感传感器,其原理是待测电流的磁场力作用于传感器使之变形,用电荷耦合器件记录传感器的变形图像,对图像进行处理得到待测电流的磁场力或电流大小。实验室的可重复性和抗干扰性实验表明,所设计的光学电流互感器可用于现场使用。The sustained development and trial operation of an optical current transducer based on the theory of Faraday magnetic-optic effect in power systems shows that the application of the optical current transducer has definite economic and social benefits. A new type of optical current transducer based on the electronic speckle-shearing pattern interferometer is presented in this paper and the design of the magnetic sensor is discussed. The magnetic force, which is generated by the to-bemeasured current, makes the sensor deform, and the charge-coupled device （CCD） records the deformed image to obtain the value of the current by image data processing. Experiments on the repeatability and anti-interference capability in laboratory show the optical current transducer is useful in practice.

关 键 词：光学电流互感器 电子剪切散斑干涉 传感器 变形梯度 

分 类 号：TM452[电气工程—电器]