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DOI: https://doi.org/10.15407/techned2017.01.029

PHYSICAL MODELING OF ELECTRICAL PHYSICAL PROCESSESAT LONG AIR GAPS BREAKDOWN

Journal Tekhnichna elektrodynamika
Publisher Institute of Electrodynamics National Academy of Science of Ukraine
ISSN 1607-7970 (print), 2218-1903 (online)
Issue No 1, 2017 (January/February)
Pages 29 – 34

 

Authors
M.M. Rezinkina1, O.L. Rezinkin2, A.R. Danyliuk2, V.I. Revuckiy2, A.N. Guchenko2
1 – State Institution "Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine",
Industrialna st., 19, Kharkiv, 61106, Ukraine,
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1 – National Technical University "Kharkiv Polytechnic Institute",
Frunze st., 21, Kharkiv, 61002, Ukraine

 

Abstract

The results of physical modeling of the influence of corona discharge intensity at the grounded objects tips on the probability of their strokes by high-voltage discharges in the long air gaps "high voltage rod –rod on the grounded plane" are presented. The system consisting of a vertical high-voltage negative electrode rod, simulating the lightning channel leader, and two grounded rods, simulating lightning rods (one with a spherical and the second with a pointed tip) has been investigated. Before application of the high voltage impulse up to 1 MV to the high-voltage electrode, the pre-breakdown DC electric field (EF) was applied to the electrode system. The experiments have shown that corona presence at the pointed electrode tip increases probability of being struck by high-voltage discharges at application of the DC electrical field strength, which is of the same order as the impulse EF strength. References 11, figures 2, table 2.

 

Key words: physical modeling, electrical physical processes, the probability of hitting by high-voltage discharges, corona current, lightning.

 

Received:    08.09.2016
Accepted:    16.12.2016
Published:   19.01.2017

 

References

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