Ageing of High Voltage Cable Insulation
Ageing of High Voltage Cable Insulation
There is great interest in understanding the ageing and degradation of electrical insulation in an effort to improve its lifetime and efficiency. This paper investigates the affect artificial ageing by ultraviolet (UV) irradiation has on the charge movement in 100 ?m low density polyethylene (LDPE) films. Ageing takes place under a 254nm, 36W, fluorescent tube, in 3 and 7 day intervals up to a total of 17 days. Chemical changes are analyzed using Fourier transform infrared (FTIR) spectroscopy to investigate oxidation products. Samples are boiled in xylene to investigate changes in cross linking due to the UV ageing. The electrical properties are analyzed in terms of electrical strength, relative permittivity, dielectric loss and charge movement. Charge movement is investigated through space charge profiles using the pulsed electro-acoustic (PEA) technique. The emission of a faint light, known as electroluminescence (EL) is also investigated to interpret charge movement near the electrodepolymer interface. Results suggest that increases in oxidation products result in the easier conduction and recombination of charge carriers due to the carbonyl and hydroxyl groups, supported by a reduced EL emission. Space charge measurements suggest increased quantity of deep trapping sites due to slow charge decay.
978-1-4577-0276-1
438-442
Mills, D H
833beedc-68ae-4c5b-8939-47c8644a53ba
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
5 June 2011
Mills, D H
833beedc-68ae-4c5b-8939-47c8644a53ba
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Mills, D H, Lewin, P L and Chen, G
(2011)
Ageing of High Voltage Cable Insulation.
IEEE 2011 Electrical Insulation Conference, Annapolis, Maryland, United States.
05 - 08 Jun 2011.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
There is great interest in understanding the ageing and degradation of electrical insulation in an effort to improve its lifetime and efficiency. This paper investigates the affect artificial ageing by ultraviolet (UV) irradiation has on the charge movement in 100 ?m low density polyethylene (LDPE) films. Ageing takes place under a 254nm, 36W, fluorescent tube, in 3 and 7 day intervals up to a total of 17 days. Chemical changes are analyzed using Fourier transform infrared (FTIR) spectroscopy to investigate oxidation products. Samples are boiled in xylene to investigate changes in cross linking due to the UV ageing. The electrical properties are analyzed in terms of electrical strength, relative permittivity, dielectric loss and charge movement. Charge movement is investigated through space charge profiles using the pulsed electro-acoustic (PEA) technique. The emission of a faint light, known as electroluminescence (EL) is also investigated to interpret charge movement near the electrodepolymer interface. Results suggest that increases in oxidation products result in the easier conduction and recombination of charge carriers due to the carbonyl and hydroxyl groups, supported by a reduced EL emission. Space charge measurements suggest increased quantity of deep trapping sites due to slow charge decay.
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Published date: 5 June 2011
Additional Information:
Event Dates: 5 - 8 June 2011
Venue - Dates:
IEEE 2011 Electrical Insulation Conference, Annapolis, Maryland, United States, 2011-06-05 - 2011-06-08
Organisations:
Electronics & Computer Science, EEE
Identifiers
Local EPrints ID: 272422
URI: http://eprints.soton.ac.uk/id/eprint/272422
ISBN: 978-1-4577-0276-1
PURE UUID: 5b7bb219-560a-490b-8a51-a27bd3c21fcf
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Date deposited: 07 Jun 2011 12:41
Last modified: 15 Mar 2024 02:43
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Contributors
Author:
D H Mills
Author:
P L Lewin
Author:
G Chen
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