交流小电流校准装置研究

谭向宇; 邵海明; 李灵至; 李妍; 丁志文

doi:10.3969/j.issn.1000-1158.2024.01.12

PDF(785 KB)

计量学报 ›› 2024, Vol. 45 ›› Issue (1) : 82-88. DOI: 10.3969/j.issn.1000-1158.2024.01.12

电磁学计量

交流小电流校准装置研究

谭向宇¹,邵海明²,李灵至³,李妍²,丁志文²

作者信息 +

Research on AC Low Current Calibration Device

TAN Xiangyu¹,SHAO Haiming²,LI Lingzhi³,LI Yan²,DING Zhiwen²

Author information +

文章历史 +

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(10Hz～10kHz),准确度达到0.05%。

Abstract

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 (10Hz~10kHz) with the accuracy of 0.05%.

导出引用

谭向宇,邵海明,李灵至,李妍,丁志文. 交流小电流校准装置研究[J]. 计量学报. 2024, 45(1): 82-88 https://doi.org/10.3969/j.issn.1000-1158.2024.01.12

TAN Xiangyu,SHAO Haiming,LI Lingzhi,LI Yan,DING Zhiwen. Research on AC Low Current Calibration Device[J]. Acta Metrologica Sinica. 2024, 45(1): 82-88 https://doi.org/10.3969/j.issn.1000-1158.2024.01.12

中图分类号： TB971

参考文献

［1］李正坤, 贺青, 张钟华, 等. 提高低温电流比较仪测量准确度的几方面措施［J］. 计量学报, 2004,25 (4): 289-293.
LI Z K, HE Q, ZHANG Z H, et al. Measures for improving the accuracy of cryogenic current comparator ［J］. Acta Metrologica Sinica, 2004, 25 (4): 289-293.
［2］梅国健, 李传生, 王家福, 等. 变压器工频短路电流测量技术研究［J］. 计量学报, 2021, 42 (10): 1343-1348.
MEI G J, LI C S, WANG J F, et al. Research on measurement technology of power frequency short-circuit current of transformer ［J］. Acta Metrologica Sinica, 2021, 42 (10): 1343-1348.
［3］MOHANAN S K, PFEIFFER U R, BOUKABACHE H, et al. Comparative analysis of ultra-low current measurement topologies with implementation in 130nm technology ［J］. IEEE Access, 2021, 9: 63855-63864.
［4］万翔. 基于Rogowski线圈的高频小电流测量研究［D］. 西安:西安建筑科技大学, 2020.
［5］张煌辉, 林飞鹏, 邵海明, 等. 直流高压电阻分压器泄漏电流测量研究［J］. 计量学报, 2018, 39 (1): 83-88.
ZHANG H H, LIN F P, SHAO H M, et al. Research on measuring leakage current of DC high-voltage resistive divider ［J］. Acta Metrologica Sinica, 2018, 39 (1): 83-88.
［6］KIM D, GOLDSTEIN B, TANG W, et al. Noise analysis and performance comparison of low current measurement systems for biomedical applications ［J］. IEEE Transactions on Biomedical Circuits & Systems, 2013, 7 (1): 52-62.
［7］杨冬磊. 直流皮安级微弱小电流及超高阻校准装置的研制［D］. 上海: 上海交通大学, 2016.
［8］孟凡猛, 王小松, 丁俊峰. 一种大变比电流互感器测量小电流的方法［J］. 电子技术与软件工程, 2015, 19: 242.
MENG F M, WANG X S, DING J F. A method of measuring low current with large transformation ratio current transformer ［J］. Electronic Technology & Software Engineering, 2015, 19: 242.
［9］LLOVERA P, LLISO J A, FUSTER V, et al. Improved methodology for high-frequency low-current measurement of grounding rod impedance ［J］. IEEE Transactions on Power Delivery, 2008, 23 (4): 1954-1960.
［10］BABITA, SHARMA D K, SATISH, et al. A versatile automation program using LabVIEW for low DC current measurement ［J］. Journal of scientific and industrial research, 2014, 73: 91-94.
［11］徐迎春, 莫玮, 刘冲, 等. 小电流测量单元校准技术研究［J］. 宇航计测技术, 2012, 32 (3): 35-38.
XU Y C, MO W, LIU C, et al. Research on calibration of low current measurement unit ［J］. Journal of Astronautic Metrology and Measurement, 2012, 32 (3): 35-38.
［12］彭建学, 马永军, 汤天浩. 一种微弱电流测量仪的设计［J］. 上海海事大学学报, 2008, 29 (4): 55-59.
PENG J X, MA Y J, TANG T H. Weak current detector design ［J］. Journal of Shanghai Maritime University, 2008, 29 (4): 55-59.
［13］汪小婷. 微电流测量方法探讨［J］. 计量与测试技术, 2016, 43 (12): 65-66.
WANG X T. Discussion of micro current measurement method ［J］. Metrology & Measurement Technique, 2016, 43 (12): 65-66.
［14］高晋占. 微弱信号检测［M］. 北京:清华大学出版社, 2004.
［15］焦海妮, 王斌. 交流阻抗测量系统中交流小电流测量方法［J］. 宇航计测技术, 2013, 33 (6): 66-70.
JIAO H N, WANG B. Weak AC current measurement of AC impedance measurement system ［J］. Journal of Astronautic Metrology and Measurement, 2013, 33 (6): 66-70.
［16］PETERSONS O. A self-balancing current comparator ［J］. IEEE Transactions on Instrumentation & Measurement, 1966, 15 (1): 62-71.
［17］KUSTERS N L. The precise measurement of current ratios ［J］. IEEE Transactions on Instrumentation and Measurement, 1964, 13 (4): 197-209.
［18］5700A/5720A series II multi-function calibrator service manual ［Z］. Rev. 1, 3/02. USA: 1996.