Characterisation of discharges propagating over non uniformly polluted circular insulator models.

• Autorzy: Diampen S. , Beroual A.
• Konferencja: APTADM 2007, III International Conference on Advances in Processing Testing and Application of Dielectric Materials., September, 26-28, 2007 Wrocław, Poland
• Języki publikacji: EN

Abstrakty

EN

The present paper is aimed at the experimental characterization and the modeling of discharges propagating over non uniformly polluted circular insulator models under impulse voltages. It concerns more especially the influence of the width and the conductivity of contamination bands on the discharge patterns and the associated currents; the influence of the polarity of voltage is also investigated. The polluted bands are simulated by grooves of different depths filled with an electrolyte of a given conductivity. It's shown that for pollution bands of high conductivity, the discharges consist of discontinuous straight lines centered at the point electrode; the discontinuities (i.e. non visible parts of the discharge channels) appears at the polluted bands. The final length and the number of branches are more important with a positive point than with a negative one. The simulated results given by a dynamic model based on equivalent electrical circuits are presented and discussed.

Słowa kluczowe

EN

circular insulator models; discharges propagating

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
• Rocznik: 2007
• Tom: Vol. 46, nr 19
• Strony: 126--130
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Diampen S.

autor

Beroual A.

• Ecole Centrale de Lyon - AMPERE CNRS UMR 5005, 36 avenue Guy de Collongue, 69134 Ecully, France

Bibliografia

• [1] N. Dhahbi-Megriche, A. Beroual and L. Krahenbuhl. A new Proposal Model for Polluted Insulators Flashover, Journal of Physics D: Applied Physics, (30), No. 5, March 1997, pp. 889-894.
• [2] N. Dhahbi-Megriche and A. Beroual, Model for Calculation of Flashover Characteristics on Polluted Insulating Surfaces under dc Voltages, IEEE Annual Report, 1998 CE1DP, Atlanta, Georgia, USA, October 25-28, 1998, pp. 80-83.
• [3] N. Dhahbi-Megriche and A. Beroual. Flashover dynamic model of polluted insulators under AC voltage, IEEE Trans. Dielec. Electr. Insulation, Vol. 7, 2000, pp. 283-289.
• [4] N. Dhahbi-Megriche and A. Beroual, Dynamic model of discharge propagation on polluted insulator surfaces under impulse voltages, 1EE Proceedings - Generation, Transmission and Distribution, Vol. 147, No. 5, September 2000, pp. 279-284.
• [5] A. Beroual and N. Dhahbi-Megriche, Dynamic Model of Discharge Propagation on Discontinuous Pollution Layers Under AC Voltages and Experimental Validation, IEEE Annual Report, 2002 CEIDP, Cancun, Quintana Roo, Mexico, October 20-24, 2002, pp. 331-334.
• [6] R. Wilkins, Flashover Voltage of HV Insulators with Uniform Surface Pollution Films, Proc 1EE, Vol. 116, 1969, pp. 457-465.
• [7] A. Beroual, Electronic and Gaseous Processes in the Breakdown Phenomena of Dielectric Liquids. J. Appl. Phys. 73 (9), 1993, pp. 4528-^1533.
• [8] A. Beroual, Universal dynamic model of discharge propagating in air, liquids, solid/liquid interfaces and polluted. 13,h International Symposium on High Voltage Engineering, Delft, The Nedherlands, August 25-29, 2003.