溯源至脉冲驱动型交流量子电压的功率测量系统

doi:10.3969/j.issn.1000-1158.2024.11.01

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Abstract An AC power measurement system based on the pulse-driven AC Josephson voltage standard is developed. By using a precision inductive voltage divider, two-stage current transformers and a sampling resistor, the system converts the voltage and current of AC power into two AC voltages within 1V. They are referenced to two pulse-driven AC Josephson voltage standards. The phase difference between two AC voltages is obtained with complex ratio measurement. The phase difference between the voltage and current of the AC power source is achieved by phase difference correction. This system needs only one set of voltage comparison module and has a simpler structure compared to state-of-the-art system structures. Under the conditions of voltage equal to 220V, current equal to 1A, frequency equal to 60Hz and power factor equal to 1.0, the uncertainty is 5.6μW/VA (k=2). The results are consistent with the results provided by a standard power meter.The mentioned study provides supports for establishing a new generation of AC power standards referenced to the pulse-driven AC Josephson voltage standard.

Key words： electrical metrology AC power measurement ACJVS switch complex ratio

Received: 07 December 2023 Published: 29 November 2024

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TB971

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	Articles by authors
	LU Qiliang
	ZHOU Kunli
	HAN Qina
	SHI Yang
	ZHAO Jianting
	YANG Yan
	XU Lei
	LU Yunfeng
	HUANG Lu
	ZHAI Changwei
	QU Jifeng

Cite this article:

LU Qiliang,ZHOU Kunli,HAN Qina, et al. Power Measurement System Referenced to the Pulse-driven AC Josephson Voltage Standard[J]. Acta Metrologica Sinica, 2024, 45(11): 1585-1592.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2024.11.01 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2024/V45/I11/1585

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