Physical modeling of electrical physical processes at long air gaps breakdown

• Дата: 2017
• Автори: Rezinkina, M.M., Rezinkin, O.L., Danyliuk, A.R., Revuckiy, V.I., Guchenko, A.N.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут електродинаміки НАН України 2017
• Назва видання: Технічна електродинаміка
• Теми: Теоретична електротехніка та електрофізика
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/158865
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Physical modeling of electrical physical processes at long air gaps breakdown / M.M. Rezinkina, O.L. Rezinkin, A.R. Danyliuk, V.I. Revuckiy, A.N. Guchenko // Технічна електродинаміка. — 2017. — № 1. — С. 29–34. — Бібліогр.: 11 назв. — англ.

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.