About the difference between zero-sequence magnetizing impedances of a 3-phase core-type transformer

Sorrentino, Elmer; Burgos Díaz, Juan Carlos

Publication:
About the difference between zero-sequence magnetizing impedances of a 3-phase core-type transformer

dc.affiliation.dpto	UC3M. Departamento de Ingeniería Eléctrica	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Diagnóstico de Máquinas Eléctricas y Materiales Aislantes (DIAMAT)	es
dc.contributor.author	Sorrentino, Elmer
dc.contributor.author	Burgos Díaz, Juan Carlos
dc.date.accessioned	2024-02-06T16:38:56Z
dc.date.available	2024-02-06T16:38:56Z
dc.date.issued	2014-11-01
dc.description.abstract	This paper analyzes the difference between zero-sequence magnetizing impedances (Z(0M)) of a 3-phase core-type transformer. Z(0M) in per-unit is smaller for an external winding than foran internal winding. The difference between both Z(0M) values is similar to the positive-sequence short-circuit impedance between both windings for units without magnetic shunts on the tank wall as well as for units without tank. This fact can be observed in measured values, and in the results of 3D models. However, the results of simple 2D models do not show this behavior; therefore, this paper demonstrates that this fact only can be explained from 3D models. The results are shown for different cases: transformers with and without magnetic shunts on the tank wall, and transformers without tank. In transformers with magnetic shunts on the tank wall, or in magnetostatic simulations of transformers with tank, the difference between both Z(0M) values is not very similar to the positive-sequence short-circuit impedance between both windings.	en
dc.format.extent	5
dc.identifier.bibliographicCitation	Sorrentino, Elmer, Carlos Burgos, Juan. (2014). About the difference between zero-sequence magnetizing impedances of a 3-phase core-type transformer. Electric Power Systems Research 122, (November 2014), Pages 439-443. https://doi.org/10.1016/j.epsr.2014.07.013	en
dc.identifier.doi	https://doi.org/10.1016/j.epsr.2014.07.013
dc.identifier.issn	0378-7796
dc.identifier.publicationfirstpage	439
dc.identifier.publicationissue	November	en
dc.identifier.publicationlastpage	443
dc.identifier.publicationtitle	Electric Power Systems Research	en
dc.identifier.publicationvolume	116
dc.identifier.uri	https://hdl.handle.net/10016/39896
dc.identifier.uxxi	AR/0000015710
dc.language.iso	eng	en
dc.publisher	Elsevier	en
dc.rights	© 2014 Elsevier B.V. All rights reserved	en
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España	*
dc.rights.accessRights	open access	en
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/	*
dc.subject.eciencia	Electrónica	es
dc.subject.other	Transformer zero-sequence impedances	en
dc.subject.other	3-Phase 3-limb transformers	en
dc.subject.other	Zero-sequence magnetizing impedances	en
dc.subject.other	Power transformers	en
dc.subject.other	Losses	en
dc.title	About the difference between zero-sequence magnetizing impedances of a 3-phase core-type transformer	en
dc.type	research article	en
dc.type.hasVersion	AM	en
dspace.entity.type	Publication