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Multi-port network and 3D finite-element models for accurate transformer calculations: Single-phase load-loss test

DSpace at IIT Bombay

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Title Multi-port network and 3D finite-element models for accurate transformer calculations: Single-phase load-loss test
 
Creator ESCARELA-PEREZ, R
KULKARNI, SV
MELGOZA, E
 
Subject eddy-current problems
load loss
finite elements
transformer models
multi-port networks
 
Description A six-port impedance network for a three-phase transformer is obtained from a 3D time-harmonic finite-element (FE) model. The network model properly captures the eddy current effects of the transformer tank and frame. Ail theorems and tools of passive linear networks can be used with the multi-port model to simulate several important operating conditions without resorting anymore to computationally expensive 3D FE simulations. The results of the network model are of the same quality as those produced by the FE program. Although the passive network may seem limited by the assumption of linearity, many important transformer operating conditions imply unsaturated states. Single-phase load-loss measurements are employed to demonstrate the effectiveness of the network model and to understand phenomena that could not be explained with conventional equivalent circuits, In addition, formal deduction of novel closed-form formulae is presented for the Calculation of the leakage impedance measured at the high and low voltage sides of the transformer. (C) 2008
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-07-28T13:43:33Z
2011-12-26T12:59:33Z
2011-12-27T05:51:51Z
2011-07-28T13:43:33Z
2011-12-26T12:59:33Z
2011-12-27T05:51:51Z
2008
 
Type Article
 
Identifier ELECTRIC POWER SYSTEMS RESEARCH, 78(11), 1941-1945
0378-7796
http://dx.doi.org/10.1016/j.epsr.2008.03.026
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7416
http://hdl.handle.net/10054/7416
 
Language en