刘俭,姜春阳,周峰,殷小东,刘浩,李敏.弱输出电压传感器误差校验系统研制[J].电测与仪表,2023,60(2):154-158. LIU Jian,JIANG Chun-yang,ZHOU Feng,YIN Xiao-dong,LIU Hao,LI Min.Development of error calibration system for weak output voltage sensor[J].Electrical Measurement & Instrumentation,2023,60(2):154-158.
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
At present, the primary and secondary deep fusion sensor apply 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 check system, the active capacitive voltage divider is developed as a standard device in this paper. A precision voltage matching unit is designed to solve the problem of voltage unmatching between the standard device and the sensor under test. Through 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. The error analysis and test are carried out by self-calibrating single-disk induction voltage divider. Finally, the error calibration of weak output voltage sensor is realized with active standard and error measurement system.
