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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/8352

Title: Improved insert geometry for reducing tank-wall losses in pad-mounted transformers
Authors: OLIVARES, JC
ESCARELA-PEREZ, R
KULKARNI, SV
DE LEON, F
MELGOZA-VASQUEZ, E
HERNANDEZ-ANAYA, O
Keywords: eddy currents
load
Issue Date: 2004
Publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation: IEEE TRANSACTIONS ON POWER DELIVERY, 19(3), 1120-1126
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.
URI: http://dx.doi.org/10.1109/TPWRD.2004.824431
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8352
http://hdl.handle.net/10054/8352
ISSN: 0885-8977
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