研究目的
To evaluate the traceability of a power calibration system developed at the Yokogawa European Standards Laboratory for calibrating electrical power meters from DC, 10 Hz up to 100 kHz through a bilateral comparison with the National Standards Institute of Sweden (RISE).
研究成果
The bilateral comparison demonstrated good agreement between the Yokogawa European Standards Laboratory and RISE, validating the traceability of the power calibration system up to 100 kHz. This was the first known comparison for power at 100 kHz at a power factor of 0 worldwide, providing confidence in the system's accuracy and precision.
研究不足
The comparison was limited by the availability of national laboratories with traceability for power up to 100 kHz. The observed drift in the transfer standard at higher frequencies (50 kHz and 100 kHz) indicates potential stability issues at these frequencies.
1：Experimental Design and Method Selection:
A bilateral comparison was conducted to evaluate the traceability of the power calibration system. The comparison involved calibrating a transfer standard (Yokogawa WT3000T Precision Power Analyzer) at both the Yokogawa European Standards Laboratory and RISE under identical conditions.
2：Sample Selection and Data Sources:
The transfer standard was selected for its wideband power capability and stability. Data were collected at frequencies of 1 kHz, 10 kHz, 50 kHz, and 100 kHz at power factors of 1 and 0 (inductive).
3：List of Experimental Equipment and Materials:
Yokogawa WT3000T Precision Power Analyzer, AC Voltmeter, AC shunt, phase standard, and phase bridges.
4：Experimental Procedures and Operational Workflow:
The transfer standard was calibrated multiple times at Yokogawa before being sent to RISE for calibration under the same settings. After returning, it was recalibrated at Yokogawa to observe any drift.
5：Data Analysis Methods:
The results were averaged over 16 measurements after stabilization. The ?En? factor was calculated to evaluate the comparison results.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
