高精度直流大电流源的两种校准方法及其应用限度  

Two Calibration Methods of High-precision DC Large Current Source and the Application Limits

作　　者：陈习权[1,2] 刘珂 林婷 曾佳旭[1] CHEN Xiquan;LIU Ke;LIN Ting;ZENG Jiaxu

机构地区：[1]浙江省计量科学研究院 [2]浙江省声学振动精密测量技术研究重点实验室

出　　处：《计量与测试技术》2023年第6期15-18,共4页Metrology & Measurement Technique

基　　金：国家重点研发计划项目(项目编号:2018YFF0212903);浙江省市场监督管理局科研计划项目(项目编号:ZC2021A012)。

摘　　要：基于当前100A以上高精度直流大电流源国家计量技术规范缺失的现状,介绍两种计量校准方法,即精密电流转换标准、数字多用表为测量标准的电流电压转换法、高精度直流大电流表为测量标准的标准电流表法。阐述两种校准方法的工作原理和注意事项,通过相应的测量不确定度对比分析和实验验证,证明其合理可行,并给出二者的应用限度。In view of the current situation of the absence of national metrological technical specifications for high-precision DC large current sources over 100A,two metrological calibration methods are introduced,namely,the current-voltage conversion method with precision current conversion standard and digital multimeter as the meas-urement standard,and the standard ammeter method with high-precision DC large current meter as the measure-ment standard.The working principles and precautions of the two calibration methods are described in detail,and the corresponding measurement uncertainty comparative analysis and experimental verification are carried out.It is proved that the two methods are reasonable and feasible,and the application limits of both are given.

关 键 词：直流大电流源 电流电压转换法 标准电流表法 测量不确定度 

分 类 号：TM933.1[电气工程—电力电子与电力传动]