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Reliable Power Transformer Efficiency Tests

Authors: Rietveld, Gert; Houtzager, Ernest; Hoogenboom, Dennis; Ye, Gu;

Reliable Power Transformer Efficiency Tests

Abstract

Power transformer efficiency measurements are a crucial part of the acceptance tests of a power transformer. These tests have increased importance since the EU Ecodesign Directive per 1 July 2015 has put efficiency limits to power transformers that are sold on the European market. In this paper we present a series of measures to assure that power transformer efficiency tests performed by power transformer manufacturers are accurate and reliable. This includes the development of more accurate industrial loss measure­ment systems (LMS), optimized LMS calibration approaches, and a reference system for on-site LMS calibration. This research is performed within the “TrafoLoss” EU joint research project, which has received funding from the EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme. Additional funding is received from the Dutch Ministry of Economic Affairs and Climate. Author's accepted version of a paper presented at the 5th International Colloquium "Transformer Research and Asset Management" (ICTRAM), Opatija / Croatia, October 9 - 12, 2019

Subjects by Vocabulary

Microsoft Academic Graph classification: Reliability (semiconductor) Computer science Acceptance testing Calibration European market Automotive engineering Ecodesign

Keywords

power transformers, efficiency, loss, loss measurement, reliability, calibration, accuracy, uncertainty

23 references, page 1 of 3

[1] VITO, ErP study, Final Report, LOT 2: Distribution and power transformers, 2010/ETE/R/106, 2011.

[2] Commission Regulation No 548/2014, "on implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to small, medium and large power transformers", Official Journal European Union, L285, pp. 10-35, May 2014.

[3] TrafoLoss joint research project. https://www.euramet.org/research-innovation/search-research-projects/details/project/lossmeasurements-on-power-transformers-and-reactors/

[4] J. Havunen, E.-P.Suamalainen, J. Tornberg, J. Hällström, T. Lehtonen, and A. Merviö, “Measuring losses of an air-core shunt reactor with an advanced loss measuring system,” SPRINGER series Lecture Notes in Electrical Engineering, pp. 1- 12 (2019).

[5] E. Mohns, J. Chunyang, H. Badura, and P. Raether, “A fundamental step-up method for standard voltage transformers based on an active capacitive high-voltage divider, IEEE Trans. Instr. Meas., Vol. 68, No. 6, pp. 2121-2128, 2019. [OpenAIRE]

[6] EPRO standard voltage transformer https://www.epro.at/en/products/test-bay-equipment/standard-voltage-transformers/

[7] White rabbit. https://www.ohwr.org/projects/white-rabbit/

[8] E. Houtzager, R. Hornecker, and G. Rietveld, “Compact distributed digitizers with metrological precision,” IEEE Trans. Instr. Meas., 68, No. 6, pp. 1653 - 1658 (2019).

[9] IEEE standard C57.12.00-2010, "IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers," IEEE Power & Energy Society, 2010.

[10] IEC 60076-8:1997, “Power transformers - Part 8: Application Guide”

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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