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Journal of Energy : Energija, Vol. 63 No. 1-4, 2014.

Original scientific paper

Magnetizing current of a Large Power Transformer and its Harmonic Spectrum in Normal and GIC conditions

Leonardo Štrac orcid id orcid.org/0000-0002-6017-4622 ; Končar Power Transformers Ltd.
Franjo Kelemen ; Končar Power Transformers Ltd.

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Abstract

A measurement of the harmonic spectrum of magnetizing current was performed. This paper
analyzes the results of the measurement of harmonic spectrum of magnetizing current in standard noload
test at various values of induction. Magnetizing current harmonic spectrum during single-phase noload
test was measured as well as the impact of combined AC and DC magnetization on core behavior
and harmonic spectrum. A mathematical model of transformer core is introduced. The calculated results
are presented.

Keywords

power transformer; no load condition; magnetizing current; harmonic spectrum; geomagnetically-induced currents

Hrčak ID:

199216

URI

https://hrcak.srce.hr/199216

Publication date:

15.8.2017.

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