Naslov
ESTIMATION OF ADDITIONAL LOSSES OF LARGE POWER TRANSFORMERS USING STATISTICS

Autori
Kelemen, Franjo ; Berberović, Sead

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, ostalo, znanstveni

Izvornik
17th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering / Magele, Christian - Graz, 2016

Skup
17th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering

Mjesto i datum
Graz, Austrija, 18.09.2016. - 21.09.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
eddy losses, finite element method, power transformer, stray field, stray losses

Sažetak
Total losses of a power transformer are subdivided in several distinctive parts. The I2R losses are easy to calculate and can be precise to a level of measurement repeatability and tolerances of the guaranteed material properties. The additional losses inside the windings can be calculated almost with the same precision using analytic methods. The third part of the load losses that consists of stray losses is the smallest and the most difficult to estimate. However, stray losses estimation is very important in the design phase of a power transformer. Not only because the guaranteed design parameters have to be satisfied, but also the utmost care has to be taken that local losses density across the power transformer does not exceed levels that are permissible in the long term loading conditions of a transformer. The additional losses estimation process presented in this paper models the additional losses level in a transformer as a unit.

Izvorni jezik
Engleski

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