ELECTRICAL STRESSES OF DC CABLE INSULATION
Cristina Stancu, Petru Notingher
Pages: 106-123
Publié: 1 Jan 2013
Vues: 668
Téléchargements: 64
Résumé: The DC electric power transmission through power lines represents one of the most important concerns of the electricity producers and users. Unfortunately the polymeric insulated cables have an important disadvantage: the development of a space charge inside the insulation (which modifies the electric field repartition) and especially its long persistence after the voltage switching-off. In this paper a computation method of the electric field in the homogeneous polymeric insulation of a DC cable is presented. It is assumed that the cable is in operation and some charge layers near the inner and outer semiconducting layers are presented. The computations are done for a medium voltage cable and show that an important local increase of the electric field (near the inner semiconductor layer) is produced. This increase depends on the sign and amount of the charge and on the layer thickness and may lead to the breakdown of the insulation at lower voltages.
Mots-clés : power cables, lifetime, polyethylene, water trees, failure
Citer cet article : Cristina Stancu, Petru Notingher. ELECTRICAL STRESSES OF DC CABLE INSULATION. Journal of International Scientific Publications: Materials, Methods & Technologies 7, 106-123 (2013). https://www.scientific-publications.net/en/article/1003042/
Retour au sommaire du volume
© 2026 The Author(s). This is an open access article distributed under the terms of the
Creative Commons Attribution License https://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This permission does not cover any third party copyrighted material which may appear in the work requested.
Disclaimer: The Publisher and/or the editor(s) are not responsible for the statements, opinions, and data contained in any published works. These are solely the views of the individual author(s) and contributor(s). The Publisher and/or the editor(s) disclaim any liability for injury to individuals or property arising from the ideas, methods, instructions, or products mentioned in the content.
