Thermal Properties of Mixtures of Synthetic Ester/Mineral Oil and Synthetic Ester-Retrofilled Transformer

  • Yichen Ning
  • , Hongshen Fan
  • , Zhenfu Tang
  • , Yang Xu
  • , Feipeng Wang
  • , Xiaojing Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Based on fire safety and environmental concerns, synthetic esters are widely used in transformer retrofilling. This paper presents the thermal properties of mixtures of mineral oil and synthetic ester. Specifically, the density, viscosity, and specific heat capacity of mixtures with mineral oil content ranging from 0% to 10% are investigated. The density and kinematic viscosity are linearly correlated with mineral oil content, but the variation in specific heat capacity is insignificant. Furthermore, computational fluid dynamics (CFD) simulation is employed to study the temperature distribution of a 110 kV transformer. Although mineral oil outperforms synthetic ester in the cooling system, the simulation results prove that transformers retrofilled with synthetic ester can still meet cooling requirements.

Original languageEnglish
Title of host publication2024 IEEE International Conference on High Voltage Engineering and Applications, ICHVE 2024 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350374988
DOIs
StatePublished - 2024
Event2024 IEEE International Conference on High Voltage Engineering and Applications, ICHVE 2024 - Berlin, Germany
Duration: 18 Aug 202422 Aug 2024

Publication series

Name2024 IEEE International Conference on High Voltage Engineering and Applications, ICHVE 2024 - Proceedings

Conference

Conference2024 IEEE International Conference on High Voltage Engineering and Applications, ICHVE 2024
Country/TerritoryGermany
CityBerlin
Period18/08/2422/08/24

Keywords

  • insulation liquid
  • retrofilling
  • synthetic ester
  • thermal property
  • transformer

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