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Space charge accumulation under the effects of temperature gradient on solid dielectric DC cable

Space charge accumulation under the effects of temperature gradient on solid dielectric DC cable
Space charge accumulation under the effects of temperature gradient on solid dielectric DC cable
It is well known that existence and accumulation of space charge within the insulating material poses threat to the reliability in the operation of dc power cables. When the cables are loaded under high voltage direct current (HVDC), temperature gradient is developed across the insulation material. In this paper, commercial ac XLPE power cables were used under an application voltage of 80 kV dc with different temperature gradients loaded between the insulating material. Space charge distributions were then measured across the insulation of the cable by means of a modified pulsed electroacoustic (PEA) system with a current transformer attached. Therefore, a replica of a power cable under load conditions could be obtained, which allows us to investigate the formation, migration and accumulation of space charges in a power cable both without and with different temperature gradients consideration across the bulk of the insulating material. Discussion will be made thoroughly in order to understand the space charge phenomenon of power cable under its service temperature.
978-0-620-44585-6
186-190
Choo, Wilson
24ec08eb-d40d-48df-a4f0-63d31c025485
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Swingler, Steve
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Choo, Wilson
24ec08eb-d40d-48df-a4f0-63d31c025485
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Swingler, Steve
4f13fbb2-7d2e-480a-8687-acea6a4ed735

Choo, Wilson, Chen, George and Swingler, Steve (2009) Space charge accumulation under the effects of temperature gradient on solid dielectric DC cable. 16th International Symposium on High Voltage Engineering, South Africa. 24 - 28 Aug 2009. pp. 186-190 .

Record type: Conference or Workshop Item (Poster)

Abstract

It is well known that existence and accumulation of space charge within the insulating material poses threat to the reliability in the operation of dc power cables. When the cables are loaded under high voltage direct current (HVDC), temperature gradient is developed across the insulation material. In this paper, commercial ac XLPE power cables were used under an application voltage of 80 kV dc with different temperature gradients loaded between the insulating material. Space charge distributions were then measured across the insulation of the cable by means of a modified pulsed electroacoustic (PEA) system with a current transformer attached. Therefore, a replica of a power cable under load conditions could be obtained, which allows us to investigate the formation, migration and accumulation of space charges in a power cable both without and with different temperature gradients consideration across the bulk of the insulating material. Discussion will be made thoroughly in order to understand the space charge phenomenon of power cable under its service temperature.

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More information

Published date: 24 August 2009
Additional Information: Event Dates: 24-28 August 2009
Venue - Dates: 16th International Symposium on High Voltage Engineering, South Africa, 2009-08-24 - 2009-08-28
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 267854
URI: https://eprints.soton.ac.uk/id/eprint/267854
ISBN: 978-0-620-44585-6
PURE UUID: f2356ced-41c1-4985-bda3-620ccfc5ba3f

Catalogue record

Date deposited: 11 Sep 2009 10:45
Last modified: 18 Jul 2017 06:59

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