基于反射式螺旋形变铁电液晶的光学电压互感器  

Optical Voltage Transformer Based on Reflective Deformed Helix Ferroelectric Liquid Crystal

作　　者：赵俊 韦朴[2] 石亲民[3] 许立国[3] ZHAO Jun1, WEI Pu2, SHI Qinmin3, XU Liguo3(1. Nanjing Sunlight Information Technology Co., Ltd., Nanjing 210000, China; 2. Nanjing Institute of Technology, Nanjing 211167, China; 3. Nanjing Nail-Relays Electric Co., Ltd., Nanjing 211102, Chin)

机构地区：[1]南京曦光信息科技有限公司,南京210000 [2]南京工程学院,南京211167 [3]南京南瑞继保电气有限公司,南京211102

出　　处：《高压电器》2018年第5期254-258,共5页High Voltage Apparatus

摘　　要：利用铁电液晶材料的电光效应,结合成熟的分压技术,提出一种基于反射式螺旋形变铁电液晶(R-DHFLC)的光学电压互感器设计方案,具有结构紧凑、低成本、响应速度快、温度及抗振性能优越等特点。分析了螺旋形变铁电液晶(DHFLC)材料的电压测量机理,介绍了R-DHFLC的结构,提出了电压互感器的整体架构及设计方法,完成了精度测试。结果表明,R-DHFLC具有微秒量级的阶跃响应速度,在-0.5~0.5 V的输入电压范围内具有良好的线性度,能够满足110 kV电压等级0.2/3P级的准确级限值要求,铁电液晶材料可用于高电压传感领域。A reflective deformed helix ferroelectric liquid crystal（R-DHFLC）based optical voltage transformer withadvantages such as compact structure,low cost,fast response,high temperature and anti-vibration performances isdeveloped combined with the mature partial pressure technology and electro-optic effect of ferroelectric liquid crystalmaterials. The voltage measurement mechanism of deformed helix ferroelectric liquid crystal（DHFLC）is analyzed,the structure of R-DHFLC is introduced,the overall structure and design method of the voltage transformer are pre-sented,and the accuracy test is finished. The results show that the R-DHFLC has the order of microsecond step re-sponse speed,good linearity in the input voltage range of -0.5--0.5 V,the prototype can meet the accuracy level of 0.2/3P for the 110 kV voltage level transformer,and the ferroelectric liquid crystal materials can be used in the fieldof high voltage sensing.

关 键 词：光学电压互感器 螺旋形变铁电液晶 反射式 

分 类 号：TM451[电气工程—电器]