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

DSpace at IIT Bombay

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Title Improved insert geometry for reducing tank-wall losses in pad-mounted transformers
 
Creator OLIVARES, JC
ESCARELA-PEREZ, R
KULKARNI, SV
DE LEON, F
MELGOZA-VASQUEZ, E
HERNANDEZ-ANAYA, O
 
Subject eddy currents
load
finite-element method
low-voltage conductor
pad-mounted transformer
stainless-steel plate
stray losses
tank-wall losses
 
Description 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.
 
Publisher IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
 
Date 2011-08-01T05:25:59Z
2011-12-26T12:53:16Z
2011-12-27T05:40:32Z
2011-08-01T05:25:59Z
2011-12-26T12:53:16Z
2011-12-27T05:40:32Z
2004
 
Type Article
 
Identifier IEEE TRANSACTIONS ON POWER DELIVERY, 19(3), 1120-1126
0885-8977
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
 
Language en