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Simulating surface charge dynamics

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.
1070-9878
Callender, George
4189d79e-34c3-422c-a601-95b156c27e76
Goddard, Kevin
fe2a2194-8b55-43c1-bdca-341691b71b2d
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
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 (2020) Simulating surface charge dynamics. IEEE Transactions on Dielectrics & Electrical Insulation. (In Press)

Record type: Article

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.

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Accepted/In Press date: 4 June 2020

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: 06 Oct 2020 17:12

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