РАСПРЕДЕЛЕНИЕ ЭЛЕКТРИЧЕСКОГО ПОЛЯ И ПЛОТНОСТИ ТОКА ВОЗЛЕ ВОДНЫХ ВКЛЮЧЕНИЙ ПОЛИМЕРНОЙ ИЗОЛЯЦИИ ВЫСОКОВОЛЬТНЫХ КАБЕЛЕЙ С УЧЕТОМ ЕЕ НЕЛИНЕЙНЫХ СВОЙСТВ

M.A. Shcherba; O.D. Podoltsev

doi:10.15407/techned2016.01.011

No. 1 (2016), Theoretical Electrical Engineering and Electrophysics

No. 1 (2016)

Theoretical Electrical Engineering and Electrophysics

ELECTRIC FIELD AND CURRENT DENSITY DISTRIBUTION NEAR WATER INCLUSIONS OF POLYMER INSULATION OF HIGH-VOLTAGE CABLES IN VIEW OF ITS NONLINEAR PROPERTIES

Published 2016-01-29

https://doi.org/10.15407/techned2016.01.011

M.A. Shcherba⁺⁻
O.D. Podoltsev⁺⁻

M.A. Shcherba

Institute of Electrodynamics of the National Academy of Sciences of Ukraine, pr. Peremohy, 56, Kyiv, 03057, Ukraine

O.D. Podoltsev

Institute of Electrodynamics of the National Academy of Sciences of Ukraine, pr. Peremohy, 56, Kyiv, 03057, Ukraine

ARTICLE_2_PDF (Українська)

Keywords

electric field
polyethylene insulation
non-linear properties
inhomogeneity
micro-inclusions электрическое поле
полиэтиленовая изоляция
нелинейные свойства
неоднородность
микровключение
кабельная линия
математическое моделирование

How to Cite

[1]

Щерба, М. and Подольцев, А. 2016. ELECTRIC FIELD AND CURRENT DENSITY DISTRIBUTION NEAR WATER INCLUSIONS OF POLYMER INSULATION OF HIGH-VOLTAGE CABLES IN VIEW OF ITS NONLINEAR PROPERTIES. Tekhnichna Elektrodynamika. 1 (Jan. 2016), 011. DOI:https://doi.org/10.15407/techned2016.01.011.

Abstract

The mathematical model and the analysis of inhomogeneous electric field and total current density distribution in micro-volumes of crosslinked polyethylene (XLPE) insulation on ultrahigh voltage near water micro-inclusions extracted along the field have been made. The analysis was made considering a nonlinear conductivity dependence on the electric field. The multi-physical character of possible degradation processes of solid polymer insulation of ultra high voltage cables in the appearance of conducting ellipsoidal inclusions and branched water dendrites has been specified. The studies were made with taking into account the calculation results of electric field macro-inhomogeneity distribution along the cross-section of XLPE insulation of ultra high voltage cables. References 17, figures 4.

https://doi.org/10.15407/techned2016.01.011

ARTICLE_2_PDF (Українська)

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