Computing the internal transient voltage response of a transformerwith a nonlinear core using Gear' s method. II. Verification

An EHV transformer's insulation structure must be designed to withstand the internal electrical stresses generated during system transients. Computer models are employed for predetermination of these stresses. Part I of this paper developed a detailed transformer model and solution method repre...

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Bibliographic Details
Published in:IEEE transactions on power systems 1995-05, Vol.10 (2), p.702-708
Main Authors: Vakilian, M, Degeneff, R C, Kupferschmid, M
Format: Article
Language:English
Online Access:Get full text
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Summary:An EHV transformer's insulation structure must be designed to withstand the internal electrical stresses generated during system transients. Computer models are employed for predetermination of these stresses. Part I of this paper developed a detailed transformer model and solution method representing the nonlinear, saturable characteristic of tire core during transients. The resulting set of stiff nonlinear differential algebraic equations are solved by application of Gear's method. Part II presents the verification of this methodology. This is accomplished by comparing the computed and measured response of a 765/345/34.5 kV 500 MVA autotransformer during energization and transient excitation
ISSN:0885-8950
DOI:10.1109/59.387906