Conference paper Open Access

Reliable Power Transformer Efficiency Tests

Gert Rietveld; Ernest Houtzager; Dennis Hoogenboom; Gu Ye

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    <subfield code="a">&lt;p&gt;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 measure&amp;shy;ment systems (LMS), optimized LMS calibration approaches, and a reference system for on-site LMS calibration.&lt;/p&gt;

&lt;p&gt;&lt;em&gt;This research is performed within the &amp;ldquo;TrafoLoss&amp;rdquo; EU joint research project, which has received funding from the EMPIR programme co-financed by the Participating States and from the European Union&amp;rsquo;s Horizon 2020 research and innovation programme. Additional funding is received from the Dutch Ministry of Economic Affairs and Climate.&lt;/em&gt;&lt;/p&gt;

&lt;p&gt;&lt;em&gt;Author&amp;#39;s accepted version of a paper presented at the 5&lt;sup&gt;th&lt;/sup&gt;&amp;nbsp;International Colloquium &amp;quot;Transformer Research and Asset Management&amp;quot; (ICTRAM),&amp;nbsp;Opatija / Croatia,&amp;nbsp;October 9&amp;nbsp;- 12, 2019&lt;/em&gt;&lt;/p&gt;

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