铌酸锂Z向通光的光学电压传感器设计研究及现场应用  

Design and application of the optical voltage sensor based on LiNbO_3 with the laser propagated along Z-axis

作　　者：郑丰[1] 贤天华[1] 程果 郭树永[1] 韩睿[2] 孙尚鹏[2] 

机构地区：[1]中国南方电网有限责任公司超高压输电公司天生桥局,贵州兴义562400 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《中国科技论文》2015年第23期2786-2790,共5页China Sciencepaper

基　　金：中央高校基本科研业务费专项资金资助项目(106112014CDJZR155501;CDJZR14150001);国家创新研究群体基金资助项目(51321063);重庆大学输配电装备及系统安全与新技术国家重点实验室自主研究课题(2007DA10512713206)

摘　　要：基于Pockels效应,选取具有较高电光系数的LiNbO3晶体,采用横向调制方式,设计制作了光学电压传感器,以Z向通光消除自然双折射对传感器响应特性的影响。分别在实验室和户外搭建试验平台测试传感器的各项特性,并与非接触感应单元组合使用,挂网试运行于南方电网兴仁±500kV换流站进行过电压在线监测,传感器的实验结果及试运行状态表明该传感器具有较高工程应用价值。Based on Pockels effect, lithium niohate （LN） electro-optical crystal is selected to design and fabricate optical voltage sensor with crosswise modulation method, in which the light goes along the z axis and the electric field goes along the x axis. This sensor is small in size, passive sensor with high stability in temperature and time, high sensitivity, which is also immune to the electromagnetic interference. Characteristics of the sensor are tested both in experiment platforms in laboratory and outdoor, the results show that the sensor is of good value to be applied in practice, and is easy in extensive use. It is applied to the prwtical measuremeot of ourvoltage in xingreu ±50 kV Comertor station which behings to China southru power Grid.

关 键 词：POCKELS效应 LINBO3 横向调制 电压传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TM732[自动化与计算机技术—控制科学与工程]