Projects per year
Abstract
The reliability of modern high voltage equipment strongly relies upon the prevention of partial (or complete) electrical discharges. Electric field enhancement, caused by defects and contaminants inside insulating materials, can play a major role in discharge initiation, potentially leading to the catastrophic failure of critical equipment. The problem is exacerbated when considering existing regions of nonuniform electric field, possibly caused by unintended metallic protrusions, surface roughness, and other high aspect-ratio features. In this work, gas-filled voids and conductive particles of spheroidal geometry were investigated under highly nonuniform field conditions. By employing an analytical methodology, the electric field distribution has been modelled around a spheroidal dielectric inclusion, subjected to a nonuniform electric field, and generated with a needle-plane electrode system. A systematic study was conducted to investigate the effects of inclusion type (gas-void or conductive particle); inclusion proximity to the HV electrode; inclusion radius; inclusion eccentricity; and needle curvature, on the enhancement factor of the redistributed field inside and outside of the inclusion. The results arising from this work further advances the understanding of insulation defects and contaminants near complex geometrical features, aiding the future development of high voltage power and pulsed power systems.
Original language | English |
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Title of host publication | 23rd International Symposium on High Voltage Engineering (ISH 2023) |
Place of Publication | Stevenage |
Pages | 1022-1028 |
Number of pages | 7 |
Volume | 2023 |
Edition | 46 |
ISBN (Electronic) | 9781839539923 |
DOIs | |
Publication status | Published - 9 Apr 2024 |
Event | The 23rd International Symposium on High Voltage Engineering - Glasgow, United Kingdom Duration: 28 Aug 2023 → 1 Sept 2023 https://ish2023.org/ |
Publication series
Name | IET Conference Proceedings |
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ISSN (Electronic) | 2732-4494 |
Conference
Conference | The 23rd International Symposium on High Voltage Engineering |
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Abbreviated title | ISH2023 |
Country/Territory | United Kingdom |
City | Glasgow |
Period | 28/08/23 → 1/09/23 |
Internet address |
Keywords
- electrical insulation
- dielectrics
- insulation defects
- electric field enhancement
- nonuniform electric field
Fingerprint
Dive into the research topics of 'Electrostatic modelling of gas-filled voids and conductive particles in highly non-uniform electric fields'. Together they form a unique fingerprint.Projects
- 1 Finished
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Doctoral Training Partnership 2020-2021 University of Strathclyde | Wong, Timothy
Timoshkin, I. (Principal Investigator), MacGregor, S. (Co-investigator) & Wong, T. (Research Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/10/20 → 10/09/24
Project: Research Studentship - Internally Allocated
Activities
- 1 Participation in conference
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The 23rd International Symposium on High Voltage Engineering
Wong, T. (Participant)
28 Aug 2023 → 1 Sept 2023Activity: Participating in or organising an event types › Participation in conference