Simulating surface charge dynamics
Simulating surface charge dynamics
Surface charge dynamics can play an important role in electric field distributions in both AC and DC insulation systems. In this paper the theory behind surface charge dynamics is introduced with a particular focus on the calculation of surface divergence; an operator which is used to determine movement of charge constrained to a surface. A detailed discussion of the model implementation is provided and validated against an analytical solution. Surface charge dynamics in AC and DC insulation systems are then investigated. Assuming the measurement data in the literature is representative it is demonstrated that surface currents have the capability to significantly alter electric field distributions in voids, even over the timescales of an AC cycle.
charge transport, finite element methods, surface charge density
19 - 27
Callender, George
4189d79e-34c3-422c-a601-95b156c27e76
Goddard, Kevin
fe2a2194-8b55-43c1-bdca-341691b71b2d
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
9 February 2021
Callender, George
4189d79e-34c3-422c-a601-95b156c27e76
Goddard, Kevin
fe2a2194-8b55-43c1-bdca-341691b71b2d
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Callender, George, Goddard, Kevin and Lewin, Paul
(2021)
Simulating surface charge dynamics.
IEEE Transactions on Dielectrics & Electrical Insulation, 28 (1), , [9351880].
(doi:10.1109/TDEI.2020.008961).
Abstract
Surface charge dynamics can play an important role in electric field distributions in both AC and DC insulation systems. In this paper the theory behind surface charge dynamics is introduced with a particular focus on the calculation of surface divergence; an operator which is used to determine movement of charge constrained to a surface. A detailed discussion of the model implementation is provided and validated against an analytical solution. Surface charge dynamics in AC and DC insulation systems are then investigated. Assuming the measurement data in the literature is representative it is demonstrated that surface currents have the capability to significantly alter electric field distributions in voids, even over the timescales of an AC cycle.
Text
Accepted_Paper
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More information
Accepted/In Press date: 4 June 2020
e-pub ahead of print date: 9 February 2021
Published date: 9 February 2021
Additional Information:
Publisher Copyright:
© 1994-2012 IEEE.
Keywords:
charge transport, finite element methods, surface charge density
Identifiers
Local EPrints ID: 443437
URI: http://eprints.soton.ac.uk/id/eprint/443437
ISSN: 1070-9878
PURE UUID: 8cfcfc5f-f434-4a0e-898e-09d66c5f9062
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Date deposited: 25 Aug 2020 16:32
Last modified: 17 Mar 2024 05:50
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Contributors
Author:
George Callender
Author:
Kevin Goddard
Author:
Paul Lewin
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