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Simulation of partial discharge under impulse voltage waveforms

Simulation of partial discharge under impulse voltage waveforms
Simulation of partial discharge under impulse voltage waveforms
A drift diffusion model is used to investigate a PD between spherical electrodes coated by a dielectric material. The model geometry is an axisymmetric analog of crossed wire experiments which have been used in the literature to investigate PD activity due to impulse voltage waveforms. The simulation shows that discharges in crossed wire arrangements are likely to form surface ionising waves over the dielectric material covering the wires. This may allows the initiation of discharges at other locations where the electric field is high along the wires. The peak apparent current of this PD was found to be highly dependent on the applied voltage and exhibited a different pulse shape to PD inside spherical voids. The results suggest a significant factor behind the high magnitude discharges observed in impulse voltage waveform experiments may be the higher triggering voltage of the PD due to the impulse waveform.
IEEE
Callender, George
4189d79e-34c3-422c-a601-95b156c27e76
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Montanari, Gian Carlo
a61d4302-adc4-416f-b423-cda93218a1e1
Callender, George
4189d79e-34c3-422c-a601-95b156c27e76
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Montanari, Gian Carlo
a61d4302-adc4-416f-b423-cda93218a1e1

Callender, George, Lewin, Paul and Montanari, Gian Carlo (2018) Simulation of partial discharge under impulse voltage waveforms. In 2018 IEEE 2nd International Conference on Dielectrics (ICD). IEEE.. (doi:10.1109/ICD.2018.8514585).

Record type: Conference or Workshop Item (Paper)

Abstract

A drift diffusion model is used to investigate a PD between spherical electrodes coated by a dielectric material. The model geometry is an axisymmetric analog of crossed wire experiments which have been used in the literature to investigate PD activity due to impulse voltage waveforms. The simulation shows that discharges in crossed wire arrangements are likely to form surface ionising waves over the dielectric material covering the wires. This may allows the initiation of discharges at other locations where the electric field is high along the wires. The peak apparent current of this PD was found to be highly dependent on the applied voltage and exhibited a different pulse shape to PD inside spherical voids. The results suggest a significant factor behind the high magnitude discharges observed in impulse voltage waveform experiments may be the higher triggering voltage of the PD due to the impulse waveform.

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More information

Published date: 1 November 2018
Venue - Dates: 2nd International Conference on Dielectrics: 2ND IEEE INTERNATIONAL CONFERENCE ON DIELECTRICS, Budapest, Hungary, 2018-07-01 - 2018-07-05

Identifiers

Local EPrints ID: 425994
URI: https://eprints.soton.ac.uk/id/eprint/425994
PURE UUID: 41d7532a-d921-43c4-82e7-a1e4da3e446f

Catalogue record

Date deposited: 09 Nov 2018 17:30
Last modified: 04 Dec 2018 17:30

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