Electrical Detection of Creeping Discharges over Insulator Surfaces in Atmospheric Gases under AC Voltage Application
Creeping discharges over insulator surfaces have been related to the presence of triple junctions in compressed gas insulated systems. The performance of dielectric materials frequently utilised in gaseous insulating high voltage applications, stressed under triple junction conditions, has been an i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/15/2970 |
| _version_ | 1811300443743059968 |
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| author | Michail Michelarakis Phillip Widger Abderrahmane Beroual Abderrahmane (Manu) Haddad |
| author_facet | Michail Michelarakis Phillip Widger Abderrahmane Beroual Abderrahmane (Manu) Haddad |
| author_sort | Michail Michelarakis |
| collection | DOAJ |
| description | Creeping discharges over insulator surfaces have been related to the presence of triple junctions in compressed gas insulated systems. The performance of dielectric materials frequently utilised in gaseous insulating high voltage applications, stressed under triple junction conditions, has been an interesting topic approached through many different physical perspectives. Presented research outcomes have contributed to the understanding of the mechanisms behind the related phenomena, macroscopically and microscopically. This paper deals with the electrical detection of creeping discharges over disc-shaped insulator samples of different dielectric materials (polytetrafluoroethylene (PTFE), epoxy resin and silicone rubber) using atmospheric gases (dry air, N<sub>2</sub> and CO<sub>2</sub>) as insulation medium in a point-plane electrode arrangement and under AC voltage application. The entire approach implementation is described in detail, from the initial numerical field simulations of the electrode configuration to the sensing and recording devices specifications and applications. The obtained results demonstrate the dependence of the generated discharge activity on the geometrical and material properties of the dielectric and the solid/atmospheric gas interface. The current work will be further extended as part of a future extensive research programme. |
| first_indexed | 2024-04-13T06:51:16Z |
| format | Article |
| id | doaj.art-626f3b5db91a4a1786b1e3da0e5d9b76 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T06:51:16Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-626f3b5db91a4a1786b1e3da0e5d9b762022-12-22T02:57:23ZengMDPI AGEnergies1996-10732019-08-011215297010.3390/en12152970en12152970Electrical Detection of Creeping Discharges over Insulator Surfaces in Atmospheric Gases under AC Voltage ApplicationMichail Michelarakis0Phillip Widger1Abderrahmane Beroual2Abderrahmane (Manu) Haddad3Advanced High Voltage Engineering Research Centre, School of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UKAdvanced High Voltage Engineering Research Centre, School of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UKÉcole Centrale de Lyon, University of Lyon, Ampère CNRS UMR 5005, 36 Avenue Guy Collongue, 69134 Écully, FranceAdvanced High Voltage Engineering Research Centre, School of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UKCreeping discharges over insulator surfaces have been related to the presence of triple junctions in compressed gas insulated systems. The performance of dielectric materials frequently utilised in gaseous insulating high voltage applications, stressed under triple junction conditions, has been an interesting topic approached through many different physical perspectives. Presented research outcomes have contributed to the understanding of the mechanisms behind the related phenomena, macroscopically and microscopically. This paper deals with the electrical detection of creeping discharges over disc-shaped insulator samples of different dielectric materials (polytetrafluoroethylene (PTFE), epoxy resin and silicone rubber) using atmospheric gases (dry air, N<sub>2</sub> and CO<sub>2</sub>) as insulation medium in a point-plane electrode arrangement and under AC voltage application. The entire approach implementation is described in detail, from the initial numerical field simulations of the electrode configuration to the sensing and recording devices specifications and applications. The obtained results demonstrate the dependence of the generated discharge activity on the geometrical and material properties of the dielectric and the solid/atmospheric gas interface. The current work will be further extended as part of a future extensive research programme.https://www.mdpi.com/1996-1073/12/15/2970creeping dischargeAC voltagepoint-planeatmospheric gasesflashover voltagepolytetrafluoroethylene (PTFE)epoxy resinsilicone rubber |
| spellingShingle | Michail Michelarakis Phillip Widger Abderrahmane Beroual Abderrahmane (Manu) Haddad Electrical Detection of Creeping Discharges over Insulator Surfaces in Atmospheric Gases under AC Voltage Application Energies creeping discharge AC voltage point-plane atmospheric gases flashover voltage polytetrafluoroethylene (PTFE) epoxy resin silicone rubber |
| title | Electrical Detection of Creeping Discharges over Insulator Surfaces in Atmospheric Gases under AC Voltage Application |
| title_full | Electrical Detection of Creeping Discharges over Insulator Surfaces in Atmospheric Gases under AC Voltage Application |
| title_fullStr | Electrical Detection of Creeping Discharges over Insulator Surfaces in Atmospheric Gases under AC Voltage Application |
| title_full_unstemmed | Electrical Detection of Creeping Discharges over Insulator Surfaces in Atmospheric Gases under AC Voltage Application |
| title_short | Electrical Detection of Creeping Discharges over Insulator Surfaces in Atmospheric Gases under AC Voltage Application |
| title_sort | electrical detection of creeping discharges over insulator surfaces in atmospheric gases under ac voltage application |
| topic | creeping discharge AC voltage point-plane atmospheric gases flashover voltage polytetrafluoroethylene (PTFE) epoxy resin silicone rubber |
| url | https://www.mdpi.com/1996-1073/12/15/2970 |
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