光学电压传感器中λ/4器件的设计与应用  

Design and Application of the Quarter Wave Plate in Optical Voltage Transformer

作　　者：崔瑛[1] 叶妙元[1] 朱勇[1] 徐雁[1] 

机构地区：[1]华中科技大学电力工程系,武汉430074

出　　处：《压电与声光》2001年第1期8-10,共3页Piezoelectrics & Acoustooptics

摘　　要：从光学电压传感器的基本原理出发 ,应用电磁场理论讨论了线偏振光经全反射后的相位差问题 ,提出了用 90°直角棱镜的组合代替 1/ 4波长板 (λ/ 4波片 )的设计原则 ,给出了光学电压传感器结构设计方案。将该结构的光学电压传感器用于 110 k V光学电压互感器中 ,试验表明 :在 2 0 % UN 以上电压时 ,系统的线性相对偏差在± 0 .2 %以内。Starting from the basic principle of optical voltage transformer,this paper discussed the problem of phase retardation due to the total internal reflection of a polarized beam using the electromagnetic field theory.A design which utilizes the combination of two prisms of different types of glass to replace a quarter wave plate is presented here.The structure disign scheme of optical voltage sensor is also provided.The test result shows that the linearity of the system is within ±0 2% after employing this kind of optical voltage sensor into a 110 kV optical voltage transformer.

关 键 词：光学电压传感器 线偏振光 λ/4波片 直角棱镜 设计 电磁场 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]