Naslov
Transformer high current lead arrangement

Autori
Janić, Žarko ; Valković, Zvonimir ; Šulc, Ivan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Advanced Research Workshop on Transformers ARWtr 2010 / Lopez-Fernandez, Xose M. - Vigo : University of Vigo, 2010, 354-359

ISBN
978-84-614-3528-9

Skup
3rd International Advanced Research Workshop on transformers

Mjesto i datum
Santiago de Compostela, Španjolska, 03.10.2010. - 06.10.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
transformer; stray loss; high current; leads; magnetic shielding

Sažetak
Generator transformers have losses in the structural parts besides that due to stray fields from windings also due to high current leads. High current leads can cause high stray losses and/or high temperature rises. In this paper an overview of the advantages and disadvantages of different leads arrangement is given. Using a 3D FEM software, calculations for eight different leads arrangement are done on a model of a 220 MVA transformer with phase current of 4, 4 kA. A model with no leads, model with lead of Y-connected windings, five different arrangements of one layer winding in delta connection and a model of two-layer winding in delta connection were analyzed. Total losses and loss densities were analysed for each model. The influence of tank shields height on loss densities and loss level is considered.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA