Optical investigations of pulsed sparks in soil near electrode

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Pecherkin, V.Ya.^1 ; Vasilyak, L.M.^1 ; Vetchinin, S.P.^1 ; Panov, V.A.^1,2 ; Son, E.E.^1,2 ; Danilin, A.N.^3 ; Ivonin, V.V.^3 ; Kolobov, V.V.^3 ; Kuklin, D.V.^3 ; Selivanov, V.N.^3

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13, Moscow

125412, Russia^1

Moscow Institute of Physics and Technology, Institutskiy Pereulok 9, Dolgoprudny, Moscow Region

141700, Russia^2

Center for Physical and Technological Problems of Energy in Northern Areas, Kola Science Center, Russian Academy of Sciences, Fersmana 14, Apatity, Murmansk Region

184209, Russia^3

关键词: Critical electric field;    Current pulse;    Electric power facilities;    Electrode construction;    Laboratory investigations;    Moist soil;    Nonlinear process;    Optical investigation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012151/pdf
DOI  :  10.1088/1742-6596/653/1/012151

来源: IOP

【 摘 要 】

Experimental results of laboratory investigation of nonlinear processes in moist soil near electrode simulating grounding of electric power facilities are presented. A method of optical recording of spark formation in the soil is developed. Investigations were carried out at voltage of 20-50 kV and current pulse duration of tens of microseconds. The critical electric field and delay of sparks beginning in soil in depending on the electrode construction, moisture and impulse duration are obtained. The images of sparks in soil are obtained for the first time.