Amir Tokić (Author), Ivo Uglešić (Author), Gorazd Štumberger (Author)

Abstract

This paper describes three different ways of transformer modeling for inrush current simulations. The developed transformer models are not dependent on an integration step, thus they can be incorporated in a state-space form of stiff differential equation systems. The eigenvalue propagations during simulation time cause very stiff equation systems. The state-space equation systems are solved by using A- and L-stable numerical differentiation formulas (NDF2) method. This method suppresses spurious numerical oscillations in the transient simulations. The comparisons between measured and simulated inrush and steady-state transformer currents are done for all three of the proposed models. The realized nonlinear inductor, nonlinear resistor, and hysteresis model can be incorporated in the EMTP-type programs by using a combination of existing trapezoidal and proposed NDF2 methods.

Keywords

simulations;transformers;numerical methods;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
UDC: 004.8
COBISS: 17118486 Link will open in a new window
ISSN: 1024-123X
Views: 1220
Downloads: 337
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary keywords: simulacije;transformatorji;numerične metode;
URN: URN:SI:UM:
Type (COBISS): Scientific work
Pages: 1-10 str.
Issue: ǂVol. ǂ2013
Chronology: 2013
DOI: 10.1155/2013/215647
ID: 10842821
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