The University of Southampton
University of Southampton Institutional Repository

Effect of Cross-Linking on the Electrical Properties of LDPE and its Lightning Impulse Ageing Characteristics

Effect of Cross-Linking on the Electrical Properties of LDPE and its Lightning Impulse Ageing Characteristics
Effect of Cross-Linking on the Electrical Properties of LDPE and its Lightning Impulse Ageing Characteristics
Cross-linked polyethylene (XLPE) is commonly used within high voltage cable insulation. It has improved thermal and mechanical resistance compared to normal low density polyethylene (LDPE). However, the cross-linking process may also vary the electrical characteristics of the material. This paper investigates changes in electrical properties of one type of LDPE before and after cross-linking. The effective lightning resistance is also considered, as the application of repetitive lightning impulse overvoltages can be a factor in insulation material ageing of high voltage cables. The material was cross-linked using trigonox-145 peroxide with controlled concentration. Samples were moulded to have a Rogowski profile and gold coated to make sure that they are evenly electrically stressed. Obtained results show that there are reductions in both space charge injection and the permittivity of the material after it is cross-linked. The breakdown strength of the material was also improved. However, the samples studied are more susceptible to ageing due to lightning impulses.
CD-ROM
Dao, N L
747dde4f-7c71-46cb-b9dd-0ceb36a38688
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swingler, S G
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Dao, N L
747dde4f-7c71-46cb-b9dd-0ceb36a38688
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swingler, S G
4f13fbb2-7d2e-480a-8687-acea6a4ed735

Dao, N L, Lewin, P L and Swingler, S G (2011) Effect of Cross-Linking on the Electrical Properties of LDPE and its Lightning Impulse Ageing Characteristics. 17th International Symposium on High Voltage Engineering, Hannover, Germany. 21 - 25 Aug 2011. CD-ROM .

Record type: Conference or Workshop Item (Paper)

Abstract

Cross-linked polyethylene (XLPE) is commonly used within high voltage cable insulation. It has improved thermal and mechanical resistance compared to normal low density polyethylene (LDPE). However, the cross-linking process may also vary the electrical characteristics of the material. This paper investigates changes in electrical properties of one type of LDPE before and after cross-linking. The effective lightning resistance is also considered, as the application of repetitive lightning impulse overvoltages can be a factor in insulation material ageing of high voltage cables. The material was cross-linked using trigonox-145 peroxide with controlled concentration. Samples were moulded to have a Rogowski profile and gold coated to make sure that they are evenly electrically stressed. Obtained results show that there are reductions in both space charge injection and the permittivity of the material after it is cross-linked. The breakdown strength of the material was also improved. However, the samples studied are more susceptible to ageing due to lightning impulses.

Text
B-039-DAO-F.pdf - Version of Record
Download (652kB)

More information

Published date: 22 August 2011
Additional Information: Event Dates: 22-26 August 2011
Venue - Dates: 17th International Symposium on High Voltage Engineering, Hannover, Germany, 2011-08-21 - 2011-08-25
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 272707
URI: http://eprints.soton.ac.uk/id/eprint/272707
PURE UUID: a085ca9f-7228-47ce-95e4-ae73f053e117

Catalogue record

Date deposited: 24 Aug 2011 07:15
Last modified: 01 Jul 2020 16:31

Export record

Contributors

Author: N L Dao
Author: P L Lewin
Author: S G Swingler

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×