Transformers Magazine, Vol. 11 No. 2, 2024.
Izvorni znanstveni članak
Investigation of magnetic wall shunt combinations on 650 MVA power transformers by finite element methods
Ramazan Altay
İrem Hazar
Necmettin Mert Koçanalı
Caner Adışen
Mahumut Aksoy
Sažetak
Power transformer losses mainly include open circuit loss and short circuit loss. Open circuit loss is created in the iron core of the transformer. Short circuit loss, copper loss, and stray loss are known collectively as “short circuit loss”. Copper loss is created in windings: current flows through the DC resistance in windings. Stray loss is caused by eddy currents in high magnetic permeability and high conductivity of components such as tanks, windings, and structural parts. This is why the volume limit of power transformers and the ratio of stray loss in structural parts and the tank cannot be ignored. This has led transformer manufacturers to add magnetic wall shunts to reduce stray loss. But often, too many magnetic wall shunts are added or misplaced, which results in increased cost and reduced performance. By improving stray loss distribution in power transformers, magnetic wall shunt design can be optimized, and the tradeoff of cost and performance can be balanced.
Ključne riječi
Stray loss; Magnetic wall shunts; Finite Element Methods (FEM); Eddy current; Thermal analysis
Hrčak ID:
315845
URI
Datum izdavanja:
8.4.2024.
Posjeta: 60 *