基于约瑟夫森量子电压的交流功率测量系统及方法研究

doi:10.3969/j.issn.1000-1158.2020.04.013

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摘要基于约瑟夫森量子电压标准设计了交流功率差分测量系统。通过分析差分采样系统的误差分布及误差传递函数,提出换向差分测量方法,减小了差分采样系统的增益误差,提高了电压幅值测量准确度;通过分析衰减系数η,证明了采用换向差分测量较容易实现10-7量级电压幅值测量。通过评估差分采样系统零相位,结果证明了差分采样系统具有较好的相位测量稳定性。分析了交流功率差分测量系统的不确定度分量,评估了功率因数为1.0,0.5L和0.5C时的功率测量不确定度,通过与国家交流功率基准装置进行实验比对,证明了基于约瑟夫森量子电压交流功率测量系统不确定度评估的合理性。

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	贾正森
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	周天地
	潘仙林
	石照民
	张江涛

关键词 ：计量学, 可编程约瑟夫森电压标准, 换向差分, 交流功率测量

Abstract：An AC power differential measurement system was designed based on the Josephson quantum voltage standard.By analyzing the error distribution and error transfer function of the differential sampling system, the sampling switching differential measurement method was proposed, which reduced the gain error of the differential sampling system and improved the accuracy of voltage amplitude measurement.By analyzing the attenuation coefficient η, it was proved that it is easy to realize voltage amplitude measurement of 10-7 magnitude by using switching differential measurement.By evaluating the zero phase of the differential sampling system, the results showed that the differential sampling system has better phase measurement stability.The uncertainty component of the AC power differential measurement system was analyzed, and the power measurement uncertainty of the power factor of 1.0, 0.5L and 0.5C was evaluated. Through the experimental comparison with the AC power national reference instrument, the rationality of the power measurement of the AC power measurement system based on Josephson quantum voltage was proved.

Key words： metrology programmable Josephson voltage standard switching differential AC power measurement

收稿日期: 2019-10-17

PACS:

TB971

基金资助:国家高科技研究发展计划(2015AA050404);国家自然科学基金(51877202)

通讯作者: 王磊(1973-),男,辽宁彰武人,中国计量科学研究院研究员,从事采样技术,数字输入功率的测量、合成和采集,及电信号的重构技术研究。Email:wl@nim.ac.cn

作者简介: 贾正森(1986-),男,山东济宁人,中国计量科学研究院副研究员,博士,主要从事基于量子技术的交流电量测量研究。Email:jizs@nim.ac.cn

引用本文:

贾正森, 王磊, 徐熙彤, 周天地, 潘仙林, 石照民, 张江涛. 基于约瑟夫森量子电压的交流功率测量系统及方法研究[J]. 计量学报, 2020, 41(4): 469-474.
JIA Zheng-sen, WANG Lei, XU Xi-tong, ZHOU Tian-di, PAN Xian-lin, SHI Zhao-min, ZHANG Jiang-tao. Research on AC Power Measurement System and Method Based on Josephson Quantum Voltage. Acta Metrologica Sinica, 2020, 41(4): 469-474.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2020.04.013 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2020/V41/I4/469

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