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Lightning Impulse Ageing of HV Cable Insulation

Lightning Impulse Ageing of HV Cable Insulation
Lightning Impulse Ageing of HV Cable Insulation
Lightning impulses can lead to accelerated ageing of extruded cables. Electrical behaviour of a dielectric material when experiencing a lightning impulse is different to that for DC or power frequency applied voltages. Pre-designed shaped HDPE material samples have been manufactured using a mould tool. The samples then have been electrically aged using an impulse generator. A real-time software based monitoring tool has been designed to control the impulse wave-shape and process the measurement data. Sets of identical lightning impulses were applied to samples and this was then followed by ramped AC breakdown tests. The obtained results were analyzed using Weibull distribution to identify any differences in lifetime between aged and unaged samples. Measurements of dielectric loss and space charge were also undertaken to identify the impulse ageing mechanism.
978-0-620-44585-6
562-565
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 (2009) Lightning Impulse Ageing of HV Cable Insulation. 16th International Symposium on High Voltage Engineering, South Africa. 24 - 28 Aug 2009. pp. 562-565 .

Record type: Conference or Workshop Item (Paper)

Abstract

Lightning impulses can lead to accelerated ageing of extruded cables. Electrical behaviour of a dielectric material when experiencing a lightning impulse is different to that for DC or power frequency applied voltages. Pre-designed shaped HDPE material samples have been manufactured using a mould tool. The samples then have been electrically aged using an impulse generator. A real-time software based monitoring tool has been designed to control the impulse wave-shape and process the measurement data. Sets of identical lightning impulses were applied to samples and this was then followed by ramped AC breakdown tests. The obtained results were analyzed using Weibull distribution to identify any differences in lifetime between aged and unaged samples. Measurements of dielectric loss and space charge were also undertaken to identify the impulse ageing mechanism.

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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: 267819
URI: https://eprints.soton.ac.uk/id/eprint/267819
ISBN: 978-0-620-44585-6
PURE UUID: 9ffcdcf2-4a39-41d3-aa34-d16abc597f72

Catalogue record

Date deposited: 02 Sep 2009 13:45
Last modified: 18 Jul 2017 06:59

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Contributors

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

University divisions

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