In-situ calibration of high-voltage three-phase transformer loss measuring systems

So, E.; Hanique, E.

doi:10.1109/19.918157

Cited by 15 publications

(5 citation statements)

References 3 publications

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“…Such a "system calibration" has the major advantage that it covers all possible systematic errors of the TLMS as installed in the test bay of the power transformer manufacturer. Based on their analog current-comparator technology, NRC achieves ultimate on-site uncertainties of 0.15% in loss power at PF = 0.01 [6], [7]. RISE, Sweden, Europe, has worked on a similar system exploiting digital technologies, but their uncertainty is limited to a few percent at PF = 0.01 due to limitations of their feedback loop [8].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Reference Setups for Calibrating Power Transformer Loss Measurement Systems

Rietveld

Mohns

Houtzager

et al. 2019

IEEE Trans. Instrum. Meas.

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A unique comparison has been performed of two reference setups for the calibration of industrial power transformer loss measurement systems (TLMSs). The setups are developed by the Van Swinden Laboratorium (VSL), Delft, The Netherlands and Physikalisch-Technische Bundesanstalt (PTB), Brunswick, Germany, with the aim to calibrate industrial TLMS as a complete system, rather than just via its individual components, with an uncertainty better than 50 µW/VA, for voltages up to 100 kV, currents up to 2 kA, and power factors down to 0. The results of the comparison show excellent agreement of the PTB and VSL reference setups, both for the individual components as for the complete system. The phase agreement in the VSL and PTB component calibration results is better than (2 ± 5), (5 ± 12), and (10 ± 15) µrad for all calibration points in current ratio, voltage ratio, and power, respectively. In the full system comparison, the difference in the results of the VSL and PTB systems is less than 12 µW/VA for currents up to 1000 A and voltages up to 70 kV, with a −7 µW/VA difference averaged over all comparison measurements. This is well within the present 25 µW/VA measurement uncertainty of each of the VSL and PTB reference setups.

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Section: Introductionmentioning

confidence: 99%

Comparison of Reference Setups for Calibrating Power Transformer Loss Measurement Systems

Rietveld

Mohns

Houtzager

et al. 2019

IEEE Trans. Instrum. Meas.

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“…Therefore, a system to calibrate such high voltage revenue metering system would require an accuracy of at least 0.1%, a test uncertainty ratio (TUR) of at least 4 times, or preferably at least 10 times, that is, 0.05% At the National Research Council of Canada a computer-controlled system for calibrating high voltage revenue metering systems under actual operating conditions of high voltage and sinusoidal/non-sinusoidal voltage and current waveforms has been developed. It is based on previously developed computer-controlled systems for calibrating high voltage transformer loss Monday Tuesday Wednesday Thursday Friday measuring systems [1,2]. A unique software based feedback loop has been added to ensure that the high voltage and high current test waveforms represent the required test conditions.…”

Section: Discussionmentioning

confidence: 99%

A computer-controlled system for calibrating high voltage revenue metering systems under actual operating conditions of high voltage and sinusoidal/non-sinusoidal voltage and current waveforms

Arseneau

Bennett

et al. 2010

Cpem 2010

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The development of a computer-controlled system for the calibration of high voltage revenue metering systems under actual operating conditions of high voltage and sinusoidal/non-sinusoidal voltage and current waveforms will be described. Measurements can be made at any power factor from zero lag through unity, at voltages up to 100 kV line-toground voltage and currents up to 2000 A. The magnitude and phase uncertainties (k=2) are estimated to be not more than 50 W/VA and 50 rad, and 100 W/VA and 100 rad for sinusoidal and non-sinusoidal conditions, respectively. SummaryEnergy is a commodity product that plays a central role in the economies of all countries. The industrial and commercial sectors are very dependent upon the cost and quality of this resource. Reliable trade measurements, traceable to the primary physical standards, play a key role in facilitating commerce in energy. NMIs are essential components of the energy infrastructure of all industrialized countries.

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“…That is, a current-comparator-based system for on-site calibration of high voltage PMU systems under actual power system operating conditions with voltages up to 100 kV line-toground and currents up to 2000 A at 50 Hz or 60 Hz will be presented. The system described here will be based on a modified system used for on-site/in-situ calibrations of high voltage transformer loss and revenue metering systems [3,4]. This will allow the tested site to be a high voltage reference that can be compared with other sites.…”

Section: High Voltage Pmu Systemmentioning

confidence: 99%

A current-comparator-based system for on-site calibrations of high voltage PMU systems

Arseneau

Tang

et al. 2012

2012 Conference on Precision Electromagnetic Measurements

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In-situ calibration of high-voltage three-phase transformer loss measuring systems

Cited by 15 publications

References 3 publications

Comparison of Reference Setups for Calibrating Power Transformer Loss Measurement Systems

Comparison of Reference Setups for Calibrating Power Transformer Loss Measurement Systems

A computer-controlled system for calibrating high voltage revenue metering systems under actual operating conditions of high voltage and sinusoidal/non-sinusoidal voltage and current waveforms

A current-comparator-based system for on-site calibrations of high voltage PMU systems

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