Electric Field Models for Liquid-Filled Insulation of Medium-Voltage AC/DC Distribution Technology

Andrea Cremasco, Mitrofan Curti, Jeroen van Duivenbode, Elena A. Lomonova, Daniel Rothmund

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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Samenvatting

The electric field in a liquid-filled insulation system at uniform temperature, subjected to constant dc voltage is investigated. This work emphasizes the importance of charge transport modeling by electro-hydro dynamic (EHD) equations. The EHD model is compared with the quasi-ohmic conduction (qΩ) model, often preferred for the lower computational cost, by analyzing the electric field intensity between two electrodes separated by mineral oil and impregnated paper insulation. First, the EHD model is verified by measurements available from the literature. Next, to compare the models consistently, the apparent conductivities used in the qΩ model are extrapolated by the verified EHD model, as a function of the electric field intensity. A significant deviation of the qΩ model from both the EHD model and the measurements is observed, due to the presence of space charge in the solid insulation.

Originele taal-2Engels
Titel2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
UitgeverijInstitute of Electrical and Electronics Engineers
Pagina's450-453
Aantal pagina's4
ISBN van elektronische versie978-1-6654-1907-9
DOI's
StatusGepubliceerd - 14 feb. 2022
EvenementIEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2021 - Vancouver, Canada
Duur: 12 dec. 202115 dec. 2021
https://ceidp.org/

Congres

CongresIEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2021
Land/RegioCanada
StadVancouver
Periode12/12/2115/12/21
Internet adres

Bibliografische nota

Funding Information:
ACKNOWLEDGMENT This paper is part of the project Advanced Solid State TRAnsformers (ASSTRA), which is an EU funded Marie Curie ITN project, grant number 765774.

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