Title:	Investigation of Natural Ester Insulating Fluid Properties and Thermal Model of a Transformer in Wide Temperature Range
Authors:	Leffler, Jan Sobotka, Lukáš Mokrá, Zdislava Pechánek, Roman Trnka, Pavel
Citation:	LEFFLER, J. SOBOTKA, L. MOKRÁ, Z. PECHÁNEK, R. TRNKA, P. Investigation of Natural Ester Insulating Fluid Properties and Thermal Model of a Transformer in Wide Temperature Range. In Proceedings of the 2022 International Conference on Diagnostics in Electrical Engineering (Diagnostika) : CDEE 2022. Pilsen: University of West Bohemia in Pilsen, 2022. s. nestránkováno. ISBN: 978-1-66548-082-6
Issue Date:	2022
Publisher:	University of West Bohemia in Pilsen
Document type:	konferenční příspěvek ConferenceObject
URI:	2-s2.0-85141441967 http://hdl.handle.net/11025/50533
ISBN:	978-1-66548-082-6
Keywords in different language:	transformer;electrical insulation system;natural ester;thermal properties;thermal model
Abstract in different language:	Currently, a significant number of transformers are designed and used in the electricity distribution network. Since these machines are commonly based on an oil-paper electrical insulation system, it is crucial to know how certain important parameters of an oil behave within a wide range of ambient temperatures. Therefore, the range of temperatures should also include low temperature region as these conditions might occur in real application. The aim of this paper is to focus on the temperature dependent viscosity, density, thermal conductivity and specific heat of an oil in order to develop a strongly coupled thermal model of a transformer which is filled with biodegradable natural ester insulation fluid. Obtained results can be well applied within the design, operation and diagnostics phase of these types of electrical machines.
Rights:	© IEEE
Appears in Collections:	OBD

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