交流小电流校准装置研究  

Research on AC Low Current Calibration Device

作　　者：谭向宇 邵海明[2] 李灵至 李妍 丁志文 TAN Xiangyu;SHAO Haiming;LI Lingzhi;LI Yan;DING Zhiwen(Yunnan EPRI,Kunming,Yunnan 650214,China;National Institute of Metrology,Beijing 100029,China;College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China)

机构地区：[1]云南电网有限责任公司电力科学研究院,云南昆明650214 [2]中国计量科学研究院,北京100029 [3]中国计量大学机电工程学院,浙江杭州310018

出　　处：《计量学报》2024年第1期82-88,共7页Acta Metrologica Sinica

基　　金：云南省科技揭榜制项目(202104BN050011);中国南方电网公司重点项目(YNKJXM20210075)。

摘　　要：在交流电流测试领域,交流小电流的校准溯源一直是该领域的难点。归纳分析了目前研究和生产领域常用的测试方法,并分析了各自的优劣势,提出了一种基于交流电流比较仪的新方法,将交流小电流溯源到mA级较大交流电流,并设计了校准装置,将交流电流测量能力扩展到1μA(10 Hz~10 kHz),准确度达到0.05%。AC low current calibration is always a difficult problem in AC testing field.The common testing methods in research and production field were analyzed,and the advantages and disadvantages of each method were analyzed.A new method based on AC comparator was put forward,and the AC low current was then traced to mA level alternating current.The calibration device was also developed.By carrying out a series of contrast test,the proposed method extended the measuring capability of alternating current to 1μA(10 Hz~10 kHz)with the accuracy of 0.05%.

关 键 词：交流小电流 比较法 测量 校准装置 交流电流比较仪 

分 类 号：TB971[一般工业技术—计量学]