Establishment of AC Power Standard at Frequencies Up to 100 kHz

Zhaomin Shi, Jiangtao Zhang, Xianlin Pan, Qing He, Jun Lin

Abstract

This paper describes the establishment of wideband power standard for traceable measurements of electrical power of sinusoidal signals. The voltage ranges from 10 V to 600 V and the current ranges from 1 A to 100 A at frequencies up to 100 kHz. The design of the power system and the components, including resistive voltage dividers (RVDs), current shunts and dual-channel digitizer have been presented. The amplitude errors of RVDs and shunts are calibrated and traceable to the dc standard based on the ac-dc transfer technique. The self-calibration of RVDs and current shunts in phase angle errors has also been described respectively. The phase angle between two channels of the digitizer has been calibrated. The measurement results of each component have been given both in the amplitude and phase angle errors. The final uncertainty of the power standard for 100 V and 100 A has been given at frequencies ranging from 400 Hz to 100 kHz.

Keywords

Power measurement, resistive voltage divider, current shunt, phase angle errors, dual-channel digitizer

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IMEKO-TC4-2017-042.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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