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 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.
