On single pole instrument voltage transformer overheating

František Janíček; Lukáš Český; Filip Skudřík

doi:10.2478/jee-2021-0004

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On single pole instrument voltage transformer overheating

Journal of Electrical Engineering

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

By: František Janíček, Lukáš Český and Filip Skudřík

Open Access

|Mar 2021

Abstract

The paper deals with calculation of overheating of a voltage instrument transformer used in medium voltage substations. Calculation of the primary and secondary windings is compared with measured values. These values are evaluated according to IEC 618691:2007, IEC 61869-3:2011 and IEC 60085:2007. In evaluation we focused on the state 1.9 × nominal voltage and thermal limiting output state. The article also compares the results for various parameters of instrument transformers that are necessary for clarification of calculation.

References

[1] IEC 61869-1:2007 Instrument Transformers – part 3: General Requirements, 1 st edition, Geneva, 2007.
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[2] IEC 61869-3:2011 Instrument Transformers – part 3: Adittional Requirements for Inductive Voltage Transformers, 1 st edition, Geneva, 2011, 28 p.
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[3] IEC 60085:2007 Electrical Insulation – Thermal Evaluation and Designation, 4 th edition, Geneva, 2007.
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[4] L. Cesky, F. Janicek, J. Kubica, and F. Skudrik, “Overheating of Primary and Secondary Coils of Voltage Instrument Transformers”, 18 th International Scientific Conference on Electric Power Engineering (EPE), Kouty nad Desnou, 2017, pp. 1–6, ISBN: 978-1-5090-6405-2.10.1109/EPE.2017.7967359
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[5] DIN 42600-8:2013-10 Messwandler für 50 Hz, Um 0,72 kV bis 52 kV - Teil 8: Stützer-Stromwandler 12 kV und Um = 24 kV – Schmale Bauform, Hauptmasse, Innenraumausführung, Berlin, 2013, 5p.
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[8] Dělená C jádra, Liberty Ostrava, https://libertyostrava.cz/o-spolecnosti/zavody/liberty-technotron-s-r-o/produkty/delena-c-jadra [03.11.2020].
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Articles in this issue

DOI: https://doi.org/10.2478/jee-2021-0004 | Journal eISSN: 1339-309X | Journal ISSN: 1335-3632

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Language: English

Page range: 29 - 34

Submitted on: Oct 29, 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:

instrument transformer of voltage,

overheating according to IEC 618693:2011,

numerical model of over-heating,

IEC 60085:2007

Related subjects:

Engineering,

Introductions and overviews,

Engineering, other

© 2021 František Janíček, Lukáš Český, Filip Skudřík, 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)