摘要
文中针对现有的互感器校验仪整检装置存在的准确度低、稳定性差、变频对误差有影响、工作回路电压(电流)检定点范围小等问题,采用直角坐标系与极坐标系的转换技术、高准确度自动测量反馈技术,设计了双路幅值和相位精密可调的数字程控标准信号源,实现了频率及负载改变后,功率源的相位幅值的自动补偿,实现了互感器校验仪和二次压降测试仪的全性能自动检定和校准。该装置经第三方机构检测,技术指标和功能达到设计要求。
The problems existing in current transformer calibrator are low accuracy,poor stability,error interference of frequency conversion,small range of voltage(current)calibration point,etc.,on this basis,this paper designs an adoptable digital program-control standard signal source with two channels of phase and amplitude through adopting adjustment technology of rectangular coordinate system and polar coordinate system,automatic measurement feedback technology with high accuracy,thus realizing automatic feedback of phase and amplitude after the frequency and load changing,and realizing the automatic verification and calibration of transformer calibrator and PT secondary drop test instrument.The device designed in this paper has already passed the test of third-party detection mechanism,and all of the technical indexes and function meet the demand.
作者
何娜
宗超
陈贤顺
黄嘉鹏
叶子阳
蒋卫
He Na;Zong Chao;Chen Xianshun;Huang Jiapeng;Ye Ziyang;Jiang Wei(Metering Center of State Grid Sichuan Electric Power Corporation,Chengdu 610045,China)
出处
《电测与仪表》
北大核心
2020年第11期141-145,共5页
Electrical Measurement & Instrumentation
基金
四川省科技厅科技项目(2017FZ0017)。
关键词
互感器校验仪
校验仪整检装置
测量反馈
傅里叶变换
transformer calibrator
calibrator overall test device
measurement feedback
Fourier transform
