Influence of oil mixtures on creeping discharges over solid/liquid interface.

• Autorzy: 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 deals with the influence of oil mixtures based on mineral oil on the morphology and final length Lf of creeping discharges over solid/liquid interface. Two mixtures are considered: a mixture (A) consisting of mineral oil with 20 prec. by volume of silicon oil, and a mixture (B) consisting of mineral oil with 20 prec. by volume of synthetic ester. The solid samples are issued from bakelite, glass or polycarbonate. The experiments are achieved under impulse voltages using a point-plane electrode arrangement. It is shown that the dielectric strength of solid/mineral oil structures is improved when mineral oil is replaced by one of these mixtures. Lf is shorter in mixture B than in mineral oil; Lt is in between with mixture A. It results in an increase of flashover voltage of the insulator when mineral oil is replaced by mixture B. L/(U) increases quasi-linearly with the voltage whatever the interface.

Słowa kluczowe

EN

creeping discharge; morphology length; final length; oil mixtures

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
• Rocznik: 2007
• Tom: Vol. 46, nr 19
• Strony: 122--125
• Opis fizyczny: Bibliogr. 4 poz.

Twórcy

autor

Beroual A.

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

Bibliografia

• [1] Ch. Perrier, A. Beroual and J.L. Bessede, Experimental study of breakdown voltage and electrostatic charging tendency of insulating liquids and mixtures for power transformers, IEEE Trans. Dielectrics and Electrical Insulation, Vol. 13, No. 3, 2006, pp. 556-564.
• [2] L. Kebbabi and A. Beroual, Influence of the properties of materials and the hydrostatic pressure on creepage discharge characteristics over solid/liquid interfaces, IEEE Annual Report, 2003 CEIDP, Albuquerque, New Mexico, USA, October 19-22, 2003, pp. 293-296.
• [3] L. Kebbabi and A. Beroual, Influence of solid insulating thickness on the morphology of creeping discharges propagating over solid/liquid interfaces - Fractal analysis, J. of Physics D: Applied Physics, Vol. 39, 2006, pp. 177-183.
• [4] L. Kebbabi and A. Beroual, Optical and Electrical Investigations on Creeping Discharges over Solid/Liquid Interface under Lightning Impulse Voltage, IEEE Trans. Dielectrics and Electrical Insulation, Vol. 13, No. 3, 2006, pp. 565-571.