Physical modeling of electrical physical processes at long air gaps breakdown

• Main Authors: Rezinkina, M.M., Rezinkin, O.L., Danyliuk, A.R., Revuckiy, V.I., Guchenko, A.N.
• Format: Article
• Language: English
• Published: Інститут електродинаміки НАН України 2017
• Series: Технічна електродинаміка
• Subjects: Теоретична електротехніка та електрофізика
• Online Access: http://dspace.nbuv.gov.ua/handle/123456789/158865

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.