Особенности проявления и влияния на электромагнитные процессы нестационарного поверхностного эффекта в металлических проводниках с импульсным током

Abstract

Приведен краткий обзор результатов известных теоретических исследований электрофизического явления линейно-го нестационарного поверхностного эффекта (НПЭ) в немагнитных однородных массивных плоских и цилиндрических металлических проводниках с импульсным аксиальным(азимутальным) током, формируемым в разрядной цепи высоковольтной электрофизической установки(ЭФУ). В обобщенном и систематизированном виде представлены основные особенности проявления линейного НПЭ в указанных проводниках и влияния рассматриваемого скин-эффекта на электромагнитные процессы, протекающие в проводниках и разрядной цепи ЭФУ с импульсным током, изменяющимся во времени по закону затухающей синусоиды. Описано влияние линейного НПЭ на длительность переходного процесса в разрядной цепи ЭФУ, глубину проникновения электромагнитного поля в материал проводников, собственные электрические параметры проводников и их добротность в разрядной цепи ЭФУ.

Purpose.Preparation of brief scientific review of basic results of the known theoretical researches of the electrophysics phenome-non of linear transient skin effect (TSE) in the non-magnetic homogeneous massive conductors of flat and cylindrical configura-tions on which in the discharge electric circuits of high-voltage electrophysical installations (EPHI) the pulsed currents ip (t) flow with given amplitudetemporal parameters (ATPs). Methodology. Theoretical bases of electrical engineering, bases of theoretical electrophysics, electrophysics bases of technique of high-voltage and high pulsed currents. Results.The brief scientific review of results of the known theoretical researches of the electrophysical phenomenon of linear TSE in non-magnetic homogeneous massive flat and cylindrical metal conductors with pulsed axial (azimuthal) current ip (t), formed in the discharge circuit of powerful high-voltage EPHI. In the generalized and systematized form the basic features of manifestation of linear TSE in the indicated con-ductors and influence of the considered skin effect on electromag-netic processes are presented at flow in conductors and discharge circuit of a high-voltage EPHI with the pulsed current ip (t) time-varying by law of attenuated sinewave. Influence of linear TSE is described in non-magnetic massive conductors during transient in a discharge circuit of EPHI with the pulsed current ip (t) of given ATP, depth of penetration of the electromagnetic field in materials of the indicated conductors, own integral electric parameters of the considered conductors and their good quality in the high-current discharge circuit of high-voltage EPHI. It is shown that at the analysis of electromagnetic transients in high-current discharge electric circuits of powerful high-voltage EPHI it is neces-sary to take into account flowing in materials of the examined massive conductors of such known electrophysical phenomenon as linear TSE. Originality.Generalization and systematization is first executed regarding domestic and foreign scientists-electrical engineers’ results of theoretical researches for long-term period of the electrophysics phenomenon of linear TSE in the flat and cylindrical metallic conductors of different thickness with the pulsed current ip (t) of given ATP. Practical value.The results pre-sented in the generalized and systematized form will be useful for electrical engineers in deepening of understanding of basic fea-tures of manifestation in non-magnetic massive homogeneous conductors with the pulsed current ip (t) of given ATP of such widely widespread in area of high-voltage high-current pulsed technique electrophysics phenomenon as linear TSE and its influ-ences on electromagnetic transients in similar metallic conductors and high-current discharge circuits of high-voltage EPHI.