On the calculation of the dielectric time constant of DC insulators containing cavities

Naderiallaf, Hadi; Seri, Paolo; Montanari, Gian Carlo

Abstract

This paper presents an analytical derivation of the dielectric time constant of DC insulators containing cavities. It is based on two different methods including Maxwell- Wagner-Sillars (MWS) equations and an equivalent charging circuit. It is shown how the time constant varies depending on the ratio between cavity height and the thickness of the dielectric in series with the cavity, and how a rough calculation on the time constant made referring only to the dielectric or medium filling the cavity can be valid when cavities with certain size are present.

Citation

Naderiallaf, H., Seri, P., & Montanari, G. C. (2021, December). On the calculation of the dielectric time constant of DC insulators containing cavities. Presented at 2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Vancouver, BC, Canada

• Presentation Conference Type: Edited Proceedings
• Conference Name: 2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
• Start Date: Dec 12, 2021
• End Date: Dec 15, 2021
• Online Publication Date: Feb 14, 2022
• Publication Date: Dec 12, 2021
• Deposit Date: Nov 26, 2024
• Peer Reviewed: Peer Reviewed
• Volume: 2021-December
• Pages: 623-626
• Book Title: 2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP 2021)
• ISBN: 9781665469128
• DOI: https://doi.org/10.1109/CEIDP50766.2021.9705335
• Keywords: Conferences , Voltage , Insulators , Mathematical models , Filling , Dielectrics , Transient analysis
• Public URL: https://nottingham-repository.worktribe.com/output/40850709
• Publisher URL: https://ieeexplore.ieee.org/document/9705335