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Investigation of surface charges on polymeric insulators and the influence of sessile water droplets

Löwe, Jens-Michael ; Secklehner, Maximilian ; Hinrichsen, Volker :
Investigation of surface charges on polymeric insulators and the influence of sessile water droplets.
In: INSUCON 2017, 13th International Electrical Insulation Conference 2017, 16.05.-18.05.2017, Birmingham, Großbritannien.
[Konferenz- oder Workshop-Beitrag], (2017)

Kurzbeschreibung (Abstract)

Nowadays, polymeric insulators are preferred as outdoor insulators due to their numerous advantages in comparison to other materials like glass or ceramic. These insulators and especially their surfaces are exposed to different environmental conditions and stresses. Due to the insulating properties and the used materials like silicone rubber, electrical surface charges can accumulate on the surface of the insulator e.g. during the operation or by friction during the transportation or the mounting. Thereby, an interaction with sessile droplets on the surface is possible. The precise knowledge of the impact of surface charges on the field distribution and the influence of (charged) sessile droplets can expand the knowledge of insulator ageing processes. In this paper the surface charges on a polymeric insulator are investigated in detail by using an electrostatic voltmeter. In addition, the interaction of sessile droplets and the charge transfer between charged droplets and the silicone rubber surface are investigated. Both the charge on droplets as well as the charge on the surface and their interaction has to be taken into account while investigating sessile droplets in electric fields. The experimental results are compared to numerical simulations, which have a good agreement.

Typ des Eintrags: Konferenz- oder Workshop-Beitrag (Keine Angabe)
Erschienen: 2017
Autor(en): Löwe, Jens-Michael ; Secklehner, Maximilian ; Hinrichsen, Volker
Titel: Investigation of surface charges on polymeric insulators and the influence of sessile water droplets
Sprache: Englisch
Kurzbeschreibung (Abstract):

Nowadays, polymeric insulators are preferred as outdoor insulators due to their numerous advantages in comparison to other materials like glass or ceramic. These insulators and especially their surfaces are exposed to different environmental conditions and stresses. Due to the insulating properties and the used materials like silicone rubber, electrical surface charges can accumulate on the surface of the insulator e.g. during the operation or by friction during the transportation or the mounting. Thereby, an interaction with sessile droplets on the surface is possible. The precise knowledge of the impact of surface charges on the field distribution and the influence of (charged) sessile droplets can expand the knowledge of insulator ageing processes. In this paper the surface charges on a polymeric insulator are investigated in detail by using an electrostatic voltmeter. In addition, the interaction of sessile droplets and the charge transfer between charged droplets and the silicone rubber surface are investigated. Both the charge on droplets as well as the charge on the surface and their interaction has to be taken into account while investigating sessile droplets in electric fields. The experimental results are compared to numerical simulations, which have a good agreement.

Freie Schlagworte: surface charges, silicone rubber, sessile droplet, electrostatic voltmeter
Fachbereich(e)/-gebiet(e): 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektrische Energiesysteme > Hochspannungstechnik
DFG-Sonderforschungsbereiche (inkl. Transregio) > Transregios > TRR 75 Tropfendynamische Prozesse unter extremen Umgebungsbedingungen
18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektrische Energiesysteme
DFG-Sonderforschungsbereiche (inkl. Transregio) > Transregios
18 Fachbereich Elektrotechnik und Informationstechnik
DFG-Sonderforschungsbereiche (inkl. Transregio)
Veranstaltungstitel: INSUCON 2017, 13th International Electrical Insulation Conference 2017
Veranstaltungsort: Birmingham, Großbritannien
Veranstaltungsdatum: 16.05.-18.05.2017
Hinterlegungsdatum: 06 Jul 2017 11:09
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