Average temperature of oil-filled transformer windings with partial cooling ducts

Peter Bokes

doi:10.2478/jee-2021-0005

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Average temperature of oil-filled transformer windings with partial cooling ducts

Journal of Electrical Engineering

Volume 72 (2021): Issue 1 (February 2021)

By: Peter Bokes

Open Access

|Mar 2021

Abstract

An effective one-dimensional model is presented that describes the temperature profile of a winding of an oil-filled distribution transformer with an arbitrary number of partial cooling ducts. An analytical solution of the model is applied to a specific example — a low voltage winding of a 400 kVA distribution transformer with one or two partial cooling ducts. Starting from the exact solution, a simple and practical formula for the temperature rise of similar windings has been derived that is suitable for transformer designers.

References

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Articles in this issue

DOI: https://doi.org/10.2478/jee-2021-0005 | Journal eISSN: 1339-309X | Journal ISSN: 1335-3632

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Language: English

Page range: 35 - 39

Submitted on: Dec 27, 2020

Published on: Mar 18, 2021

Published by: Slovak University of Technology in Bratislava

In partnership with: Paradigm Publishing Services

Publication frequency: 6 issues per year

Keywords:

heat transfer,

distribution transformers,

temperature rise,

partial cooling ducts

Related subjects:

Engineering,

Introductions and overviews,

Engineering, other

© 2021 Peter Bokes, published by Slovak University of Technology in Bratislava
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 72 (2021): Issue 1 (February 2021)