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Article

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Title

Dielectric properties and fire safety of mineral oil and low-viscosity natural ester mixtures in various concentrations

Authors

[ 1 ] Instytut Elektroenergetyki, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.10] Environmental engineering, mining and energy

Year of publication

2023

Published in

Energies

Journal year: 2023 | Journal volume: vol. 16 | Journal number: iss. 10

Article type

scientific article

Publication language

english

Keywords
EN
  • power transformers
  • dielectric liquids
  • flash point
  • fire point
  • net calorific value
  • permittivity
  • dielectric losses
  • conductivity
  • breakdown voltage
Abstract

EN This paper presents the results of testing the electrical and fire properties of mineral oil and low-viscosity natural ester mixtures. Properties such as breakdown voltage, relative permeability, dispersion coefficient, conductivity, flash and burn point, and lower heating values were investigated in different concentrations of mixtures of the two liquids, as well as for the base liquids. To ensure equal humidity levels, the prepared samples of mixtures and base liquids were conditioned under identical climatic conditions, resulting in samples with similar relative humidity (9 ± 3)%. The obtained measurement results for mixtures of the two fluids were related to the values obtained for the base liquids and analyzed in terms of changes in electrical properties and fire safety when used as insulating liquids in transformers. The presented results are useful for supplementing knowledge on the possibilities of using dielectric liquid mixtures in high-voltage power devices, with to the aim of using mixtures as alternatives to mineral oil.

Pages (from - to)

4195-1 - 4195-14

DOI

10.3390/en16104195

URL

https://www.mdpi.com/1996-1073/16/10/4195

Comments

article number: 4195

License type

CC BY (attribution alone)

Open Access Mode

open journal

Open Access Text Version

final published version

Date of Open Access to the publication

at the time of publication

Full text of article

Download file

Access level to full text

public

Ministry points / journal

140

Impact Factor

3,2 [List 2022]

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