Title :
Thermodynamic models and three-dimensional analysis for determination of Load Limits Transformers
Author :
Pontes, C.E.V. ; Costa, S.F. ; Costa, M.C. ; Henriques, H.O. ; Aires, J.C.O. ; Fortes, M.Z.
Author_Institution :
LIGHT S.E.S.A., Rio de Janeiro, Brazil
Abstract :
The power transformer thermal response related to a load curve can be verified by a tridimensional model using finite elements. This paper presents the modeling and the software developed for this purpose and compares the results with local tests data of two critical points - the top of the oil and the winding hot spot. Using the technique described, the maximum load limit of power transformers can be determinate, and operation costs and system expansion can be analyzed.
Keywords :
power transformer insulation; thermodynamics; transformer oil; transformer windings; finite elements; load curve; loading transformer limit determination; local test data; maximum load limit; oil; operation costs; power transformer thermal response; system expansion; thermodynamic model; three-dimensional analysis; tridimensional model; winding hot spot; Atmospheric modeling; Computational modeling; Face; Load modeling; Power transformers; Software; Thermodynamics; load limits; overload; transformers;
Journal_Title :
Latin America Transactions, IEEE (Revista IEEE America Latina)
DOI :
10.1109/TLA.2013.6684397
