Improved insert geometry for reducing tank-wall losses in pad-mounted transformers

Juan Carlos Olivares, Rafael Escarela-Perez, S. V. Kulkarni, Francisco De Leon, Enrique Melgoza-Vasquez, Octavio Hernández-Anaya

Research output: Contribution to journalArticle

Abstract

This paper presents a numerical analysis of losses generated in the tank-wall surrounding the high-current bushings of pad-mounted transformers using a three-dimensional (3-D) finite-element approach. Two cases are analyzed to study the impact of inserting small plates of different geometry (located near the high-current phases) on the reduction of tank losses. Significant reductions in stray losses occurring in the tank wall are obtained with plate inserts of low-cost. With the "T" configuration proposed in this paper, we reduce the tank-wall losses by a factor of 1/21 at rated current when compared with the case of tank wall without the stainless-steel plate. A 3-D time-harmonic finite-element model is used to determine the losses in the tank wall. Two load loss tests were carried out on experimental transformers to validate the simulations and effectiveness of the low-cost inserts.

Original languageEnglish (US)
Pages (from-to)1120-1126
Number of pages7
JournalIEEE Transactions on Power Delivery
Volume19
Issue number3
DOIs
StatePublished - Jul 2004

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Electric load loss
Bearing pads
Bushings
Geometry
Costs
Numerical analysis
Stainless steel

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Olivares, J. C., Escarela-Perez, R., Kulkarni, S. V., De Leon, F., Melgoza-Vasquez, E., & Hernández-Anaya, O. (2004). Improved insert geometry for reducing tank-wall losses in pad-mounted transformers. IEEE Transactions on Power Delivery, 19(3), 1120-1126. https://doi.org/10.1109/TPWRD.2004.824431

Improved insert geometry for reducing tank-wall losses in pad-mounted transformers. / Olivares, Juan Carlos; Escarela-Perez, Rafael; Kulkarni, S. V.; De Leon, Francisco; Melgoza-Vasquez, Enrique; Hernández-Anaya, Octavio.

In: IEEE Transactions on Power Delivery, Vol. 19, No. 3, 07.2004, p. 1120-1126.

Research output: Contribution to journalArticle

Olivares, JC, Escarela-Perez, R, Kulkarni, SV, De Leon, F, Melgoza-Vasquez, E & Hernández-Anaya, O 2004, 'Improved insert geometry for reducing tank-wall losses in pad-mounted transformers', IEEE Transactions on Power Delivery, vol. 19, no. 3, pp. 1120-1126. https://doi.org/10.1109/TPWRD.2004.824431
Olivares JC, Escarela-Perez R, Kulkarni SV, De Leon F, Melgoza-Vasquez E, Hernández-Anaya O. Improved insert geometry for reducing tank-wall losses in pad-mounted transformers. IEEE Transactions on Power Delivery. 2004 Jul;19(3):1120-1126. https://doi.org/10.1109/TPWRD.2004.824431
Olivares, Juan Carlos ; Escarela-Perez, Rafael ; Kulkarni, S. V. ; De Leon, Francisco ; Melgoza-Vasquez, Enrique ; Hernández-Anaya, Octavio. / Improved insert geometry for reducing tank-wall losses in pad-mounted transformers. In: IEEE Transactions on Power Delivery. 2004 ; Vol. 19, No. 3. pp. 1120-1126.
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