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.
作者
赵俊
韦朴
石亲民
许立国
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)
出处
《高压电器》
CAS
CSCD
北大核心
2018年第5期254-258,共5页
High Voltage Apparatus
关键词
光学电压互感器
螺旋形变铁电液晶
反射式
optical voltage transformer
deformed helix ferroelectric liquid crystal
reflective
