Evaluation of critical volume in strongly inhomogeneous electric fields

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I. ADJIM, N. ADJIM

Abstract. On the basis of an experimental study of the dielectric strength of air with different densities and for inter-electrode distances of 1 and 2 cm, we evaluated by simulation, the variation of critical volume based on the of electric potential difference applied to a system “point-plane” electrodes in which the field is highly non-homogeneous. The boot discharge delay time, the mode of evolution of the landfill and the probability of the dielectric strength are resulting from the value of this volume. We also took into account the change in net ionization coefficient on the likely path of the discharge between the two electrodes. The results confirm that in strongly inhomogeneous field, the critical volume in positive polarity is slightly different from the volume of the ionization zone and increases exponentially with the applied voltage.

Keywords
Electric Field, Free Electrons, Critical Volume, Net Ionization Coefficient, Electrical Discharge

Published online 12/10/2016, 4 pages
Copyright © 2016 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: I. ADJIM, N. ADJIM, ‘Evaluation of critical volume in strongly inhomogeneous electric fields’, Materials Research Proceedings, Vol. 1, pp 143-146, 2016
DOI: https://dx.doi.org/10.21741/9781945291197-36

The article was published as article 36 of the book Dielectric Materials and Applications

References
[1] N. ADJIM, M. KAMLI, B, SENOUCI, Identification des électrons germes dans l’air en champ électriques non homogènes (Identification of electron germs in the air in inhomogeneous electric field). 5ème Conférence sur la haute tension USTMB. Oran 2003.
[2] N. ADJIM, M. SEBBANI et M. RAHLI, Influences de la polarité de l’électrode active sur la tension d’amorçage et sur le taux de production des électrons initiaux dans l’air (Influences the polarity of the active electrode on the ignition voltage and on the production rate of the initial electrons in air). CNHT 2007, Algerian Journal of Technology, Number Special (2007)
[3] N. ADJIM, Identification et evolution de la population d’electrons germes en champ electrique fortement non homogene (Identification and evolution of the population of germ electrons in a strongly inhomogeneous electric field.). Thèse de doctorat. USTO-MB (2008)
[4] N. ADJIM, A. ALLALI and B. SENOUCI, Experimental study of the rate of initial the electrons sources in the air between 1 and 3 absolute bars in no homogeneous electric field. International Journal of Applied Engineering Research, ISSN 0973-4561 Volume 2, Number 3 September (2007)
[5] M. AGUET, M. IANOZ, Haute tension – traite d’électricité d’électronique et d’électrotechnique (High voltage – Treaty of electricity, electronics and electrotechnical engineering). Publié sous la direction de J. Neirynck, Dunod.
[6] J.M. MEEK, A theory of spark discharge. Physical review, volume 57 (1940). https://dx.doi.org/10.1103/PhysRev.57.722
[7] J.M. MEEK, J.D. Craggs, Electrical Breakdown of Gases, Clarendon, Oxford (1953).
[8] G.BERGER « Retard à la formation de la décharge couronne positive dans l’air ». Thèse de Doctorat ès-sciences, Université Paris-Sud, 1980.