基于普克尔效应的光学电压互感器的设计和实验  

Design and Experimental Research of Pockels Effect Based Optical Voltage Transducer

作　　者：温海燕 雷林绪 张朝阳 孙海江 

机构地区：[1]国网智能电网研究院,北京市海淀区100192

出　　处：《电网技术》2013年第4期1180-1184,共5页Power System Technology

基　　金：国家电网公司科技项目(SGKJKJ[2011]532)~~

摘　　要：随着电力系统电压等级的提高,传统电磁式电压互感器和电容分压式电压互感器的缺陷如绝缘结构复杂、存在磁饱和及铁磁谐振等将日益突出。光学电压互感器可有效克服传统电压互感器的固有缺陷。设计了一种基于普克尔效应的光学电压互感器,阐述了其结构及工作原理。设计并制作了器件化的传感头以及实验用的屏蔽装置,搭建了光学电压互感器实验系统,利用数字闭环检测技术来进行输出信号的处理。常温下,互感器在0-2.5kV直流电压下的测试结果显示,互感器的输出具有良好的线性关系,表明该光学电压互感器设计方案的可行性。Along with voltage class upgrading of power systems, defects of traditional electromagnetic voltage transformers and capacitive voltage transformer such as complex insulation structure, insufficient accuracy caused by magnetic saturation and existence of magnetic saturation and ferromagnetic resonance become more and more evident, however optical voltage transducer can effectively overcome inherent defects of traditional voltage transducers. A Pockels effect-based optical voltage transducer （OVT） is designed and its structure and working principle are expounded. The sensing head in device-level and shielding device are designed and developed, and an experimental system for the optical voltage transducer is set up and output signals are processed by digital closed-loop detection technology. In normal temperature environment, the testing results of OVT within the rising range of DC voltage from 0 kV to 2.5 kV show that there is a satisfied linear relation between the input and the output of the OVT, so it indicates the design scheme of the developed OVT is feasible.

关 键 词：光学电压互感器 普克尔效应 电光晶体 传感头 屏蔽装置 

分 类 号：TM451[电气工程—电器]