研究目的
To establish and evaluate the performance of a reference power standard at SASO NMCC through a bilateral comparison under GULFMET.EM-S2.
研究成果
The AC power measurement standard established at SASO NMCC showed good agreement with estimated measurement uncertainties in a bilateral comparison. Future work aims at improving measurement uncertainties.
研究不足
The system's accuracy is currently estimated with uncertainties of 40 ppm for power and 200 ppm for harmonics, indicating areas for future improvement.
1：Experimental Design and Method Selection
The standard is based on digital sampling wattmeter synchronized to the power source, designed for power and harmonics measurements.
2：Sample Selection and Data Sources
A well-known travelling standard (HEG C1-2) was used for comparison measurements at several AC power values.
3：List of Experimental Equipment and Materials
Fluke 6105A Calibrator as the phantom power source, NI-TestStand and LabView based software for system control and data analysis.
4：Experimental Procedures and Operational Workflow
Measurements were performed according to a technical protocol, with synchronized sampling of voltage and current signals.
5：Data Analysis Methods
DFT is used on the software for distorted waveforms and harmonic components display. Uncertainty budgets were calculated following GUM guidelines.
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