弱输出电压传感器误差校验系统研制  

Development of error calibration system for weak output voltage sensor

作　　者：刘俭 姜春阳 周峰 殷小东 刘浩 李敏 Liu Jian;Jiang Chunyang;Zhou Feng;Yin Xiaodong;Liu Hao;Li Min(China Electric Power Research Institute Co.,Ltd.,Wuhan 430074,China;Electric Power Research Institute of State Grid Sichuan Electric Power Co.,Ltd.,Nanchang 330000,China)

机构地区：[1]中国电力科学研究院有限公司,武汉430074 [2]国网江西省电力有限公司电力科学研究院,南昌330000

出　　处：《电测与仪表》2023年第2期154-158,共5页Electrical Measurement & Instrumentation

基　　金：国家电网有限公司科技项目(JL71-18-018)。

摘　　要：目前一二次深度融合传感器在配网自动化领域不断深化推广应用。为实现弱输出交流传感器量值溯源并建立相应误差校验系统,文章以基于有源V/I转换原理的电容分压器作为标准器,并设计了精密电压匹配单元以解决标准器和弱输出传感器输出电压不匹配问题。通过设计多级屏蔽结构、二次串联升压线圈以及动态跟随反馈电路,实现精密电压匹配单元反相和比例分压功能。最终配合双通道高精度误差测量系统实现不同原理的弱输出电压传感器误差校验。At present, the primary and secondary deep fusion sensor applies in the field of distribution network automation more and more popularly. In order to realize the traceability of the weak output AC sensor and establish the corresponding error calibration system, the active V/I conversion capacitor voltage divider is developed as a standard device in this paper. A precision voltage matching unit is designed to solve the problem of voltage un-matching between the standard device and the sensor under test. Through the design of the multi-stage shielding structure, secondary series boost coil and dynamic following feedback circuit, the inverse and proportional boost functions of precision voltage matching unit are realized. Finally, the error calibration of weak output voltage sensor based on different principles is realized with two-channel precision error measurement system.

关 键 词：弱输出传感器 有源V/I转换电容分压器 精密电压匹配单元 误差校验系统 

分 类 号：TM933[电气工程—电力电子与电力传动]