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Plasma dynamic simulations of partial discharges within electrical tree structures

Plasma dynamic simulations of partial discharges within electrical tree structures
Plasma dynamic simulations of partial discharges within electrical tree structures
This paper is a preliminary investigation into the physical mechanisms of PD within gaseous tubules in a needle-plane electrode arrangement. It is intended as a simple representation of an experimental system which formed electrical trees. A drift diffusion model is used to simulate plasma dynamics, where it is assumed that the gas within the tubule is atmospheric pressure air. The findings were in reasonable agreement with the existing literature on the tubule length required to initiate a PD. The PDs were found to be positive streamers, which propagated towards the needle tip at negative applied voltage polarity, and away from the needle tip at positive voltage polarity. There a number of possible developments for future work with the ultimate aim of improving simulations of electrical treeing in high voltage plant.
electrical trees, partial discharge, plasma dynamics
340-343
IEEE
Callender, George
4189d79e-34c3-422c-a601-95b156c27e76
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Callender, George
4189d79e-34c3-422c-a601-95b156c27e76
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e

Callender, George and Lewin, Paul (2020) Plasma dynamic simulations of partial discharges within electrical tree structures. In 2019 IEEE Electrical Insulation Conference (EIC). IEEE. pp. 340-343 . (doi:10.1109/EIC43217.2019.9046581).

Record type: Conference or Workshop Item (Paper)

Abstract

This paper is a preliminary investigation into the physical mechanisms of PD within gaseous tubules in a needle-plane electrode arrangement. It is intended as a simple representation of an experimental system which formed electrical trees. A drift diffusion model is used to simulate plasma dynamics, where it is assumed that the gas within the tubule is atmospheric pressure air. The findings were in reasonable agreement with the existing literature on the tubule length required to initiate a PD. The PDs were found to be positive streamers, which propagated towards the needle tip at negative applied voltage polarity, and away from the needle tip at positive voltage polarity. There a number of possible developments for future work with the ultimate aim of improving simulations of electrical treeing in high voltage plant.

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More information

Accepted/In Press date: 4 May 2019
e-pub ahead of print date: 16 June 2019
Published date: 26 March 2020
Keywords: electrical trees, partial discharge, plasma dynamics

Identifiers

Local EPrints ID: 440987
URI: http://eprints.soton.ac.uk/id/eprint/440987
PURE UUID: ba3b0426-30e6-4d7f-9ac2-de9cb26ddde4
ORCID for Paul Lewin: ORCID iD orcid.org/0000-0002-3299-2556

Catalogue record

Date deposited: 27 May 2020 16:30
Last modified: 03 Dec 2021 02:35

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Contributors

Author: George Callender
Author: Paul Lewin ORCID iD

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