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Computational Mechanics
Published in: Computational Mechanics 3/2018

12-11-2017 | Original Paper

Modeling of power transmission and stress grading for corona protection

Authors: T. I. Zohdi, B. E. Abali

Published in: Computational Mechanics | Issue 3/2018

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Abstract

Electrical high voltage (HV) machines are prone to corona discharges leading to power losses as well as damage of the insulating layer. Many different techniques are applied as corona protection and computational methods aid to select the best design. In this paper we develop a reduced-order model in 1D estimating electric field and temperature distribution of a conductor wrapped with different layers, as usual for HV-machines. Many assumptions and simplifications are undertaken for this 1D model, therefore, we compare its results to a direct numerical simulation in 3D quantitatively. Both models are transient and nonlinear, giving a possibility to quickly estimate in 1D or fully compute in 3D by a computational cost. Such tools enable understanding, evaluation, and optimization of corona shielding systems for multilayered coils.
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Footnotes
1
Intel Core i7-2600 at 3.4 GHz running on Ubuntu server with Linux 4.4.0-64-generic
 
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Metadata
Title
Modeling of power transmission and stress grading for corona protection
Authors
T. I. Zohdi
B. E. Abali
Publication date
12-11-2017
Publisher
Springer Berlin Heidelberg
Published in
Computational Mechanics / Issue 3/2018
Print ISSN: 0178-7675
Electronic ISSN: 1432-0924
DOI
https://doi.org/10.1007/s00466-017-1504-2

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