Abstract
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.
| Original language | English |
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| Title of host publication | 2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) |
| Publisher | Institute of Electrical and Electronics Engineers |
| Pages | 450-453 |
| Number of pages | 4 |
| ISBN (Electronic) | 978-1-6654-1907-9 |
| DOIs | |
| Publication status | Published - 14 Feb 2022 |
| Event | IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2021 - Vancouver, Canada Duration: 12 Dec 2021 → 15 Dec 2021 https://ceidp.org/ |
Conference
| Conference | IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2021 |
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| Country/Territory | Canada |
| City | Vancouver |
| Period | 12/12/21 → 15/12/21 |
| Internet address |
Bibliographical note
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.
Funding
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.