基于PJVS型下采样的宽频量子功率及电能标准设计

钱璐帅; 施杨; 周琨荔; 贾依辰; 赵建亭; 屈继峰

钱璐帅,施杨,周琨荔,贾依辰,赵建亭,屈继峰.基于PJVS型下采样的宽频量子功率及电能标准设计[J].电测与仪表,2025,62(1):13-19.
QIAN Lushuai,SHI Yang,ZHOU Kunli,JIA Yichen,ZHAO Jianting,QU Jifeng.Design of a wideband quantum power and energy standard based on the sub-sampling method with programmable Josephson voltage standard[J].Electrical Measurement & Instrumentation,2025,62(1):13-19.

基于PJVS型下采样的宽频量子功率及电能标准设计

Design of a wideband quantum power and energy standard based on the sub-sampling method with programmable Josephson voltage standard

DOI：10.19753/j.issn1001-1390.2025.01.002

中文关键词: 电力量子计量功率及电能标准约瑟夫森电压差分测量下采样测量不确定度

英文关键词:quantum electrical metrology, power and energy standard, Josephson voltage, differential measurement, sub-sampling, measurement uncertainty

基金项目:国家自然科学基金资助项目（52307021）,国家重点研发计划资助项目（2021YFF0603702）

作者中文名	作者英文名	单位
钱璐帅	QIAN Lushuai	中国计量大学机电工程学院
施杨	SHI Yang	中国计量科学研究院
周琨荔	ZHOU Kunli	中国计量科学研究院
贾依辰	JIA Yichen	中国计量大学机电工程学院
赵建亭	ZHAO Jianting	中国计量科学研究院
屈继峰	QU Jifeng	中国计量科学研究院

摘要点击次数: 521

中文摘要:

随着新型电力系统的“双高”特征凸显，电网中的宽频动态成分日益复杂，对功率及电能计量技术提出了新的需求与挑战。发展量子功率及电能标准是电力量子计量技术研究的主流趋势，但传统的差分测量方法在传递交流量子电压阶梯波量值时，量子电压的合成频率被限制在1 kHz以下，以确保测量准确度达到10-6量级。针对上述问题，文中提出了一种基于可编程约瑟夫森电压的宽频量子功率及电能标准设计方案，通过下采样原理的宽频量子差分测量方法，实现宽频信号向低频量子电压阶梯波的可靠量值溯源，有望将功率及电能的量子测量频率从当前的工频提升至10 kHz以上。通过构建实验系统，以脉冲驱动型交流约瑟夫森电压标准的输出为被测信号，证明所述下采样测量方法在1 kHz频点上的有效值测量结果与传统差分测量结果的一致性优于3×10-6，扩频测量至10 kHz时没有显著的测量偏差，以上测量结果为构建最优合成不确定度达到10-6量级的宽频量子功率及电能标准提供了技术支撑。

英文摘要:

With the emergence of “dual-high” characteristics in new power system, the wideband dynamic components in power grid have become increasingly complex, posing new demands and challenges for power and energy metrology technologies. The development of quantum power and energy standards represents the mainstream trend in quantum electrical metrology research. However, traditional differential sampling methods, widely used for transferring AC quantum voltage step waveform values, are limited within frequencies below 1 kHz to maintain a measurement accuracy at the 10-6 level. To address these issues, this paper proposes a wideband quantum power and energy standard design based on programmable Josephson voltage standard. By utilizing a wideband quantum differential measurement method based on the principle of sub-sampling, the precise traceability of wideband signals to low-frequency quantum voltage step uave is achieved, offering the potential to extend the quantum measurement frequency of power and energy from the current power frequency to beyond 10 kHz. An experimental system was constructed using the output of a pulse-driven AC Josephson voltage standard as the test signal. Preliminary results show that the sub-sampling method achieves a consistency of better than 3×10-6 with traditional differential measurement method at 1 kHz, and reveals no new obvious discrepancies when extending the frequency to 10 kHz. These findings provide essential technical support for the development of a wideband quantum power and energy standard with an optimal combined uncertainty at the 10-6 level.

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