Space charge dynamics in oil-impregnated pressboard under AC
electric field
Space charge dynamics in oil-impregnated pressboard under AC
electric field
Space charge has been a general concern related with the reliability and the life-time of HVDC components. In this present work, the space charge profiles in oil-impregnated pressboards are investigated by the means of the pulsed electroacoustic (PEA) technique under AC voltage with 50 Hz at the room temperature. It has been observed that the ageing status of the mineral oil and the presence of the oil gap can influence the charge accumulation significantly. In the fresh oil impregnated pressboard, considerable negative charges are accumulated near the aluminium electrode. However, only little or no space charge can be detected in the aged oil impregnated pressboard and the oil gap and pressboard composite insulation system. The results may suggest that the amount of the AC space charge is highly dependent on the charge mobility within the dielectrics. The higher charge mobility can result in a smaller amount of AC space charge.
9781467374989
Hao, Miao
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Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Fu, Jin
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Wang, Qian
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Tang, Chao
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Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
18 October 2015
Hao, Miao
1ca8b57a-b1a6-40f9-8308-b8dfdfb8aead
Hao, Jian
01bbfea6-2a3e-40b3-bb0c-1c16d6dcd66d
Fu, Jin
ffe9caa5-b98c-41af-aac2-948ad3de0287
Wang, Qian
a9a64412-49cc-4ab7-9bb6-646551219d66
Tang, Chao
2aa1528d-e0fb-4f9a-ba6b-fe98d714c36f
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Hao, Miao, Hao, Jian, Fu, Jin, Wang, Qian, Tang, Chao and Chen, George
(2015)
Space charge dynamics in oil-impregnated pressboard under AC
electric field.
IEEE Conference on Electrical Insulation and Dielectric Phenomena, Ann Arbor, United States.
18 - 20 Oct 2015.
4 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Space charge has been a general concern related with the reliability and the life-time of HVDC components. In this present work, the space charge profiles in oil-impregnated pressboards are investigated by the means of the pulsed electroacoustic (PEA) technique under AC voltage with 50 Hz at the room temperature. It has been observed that the ageing status of the mineral oil and the presence of the oil gap can influence the charge accumulation significantly. In the fresh oil impregnated pressboard, considerable negative charges are accumulated near the aluminium electrode. However, only little or no space charge can be detected in the aged oil impregnated pressboard and the oil gap and pressboard composite insulation system. The results may suggest that the amount of the AC space charge is highly dependent on the charge mobility within the dielectrics. The higher charge mobility can result in a smaller amount of AC space charge.
Text
CEIDP2015-000426.pdf
- Accepted Manuscript
More information
Published date: 18 October 2015
Venue - Dates:
IEEE Conference on Electrical Insulation and Dielectric Phenomena, Ann Arbor, United States, 2015-10-18 - 2015-10-20
Organisations:
EEE
Identifiers
Local EPrints ID: 383635
URI: http://eprints.soton.ac.uk/id/eprint/383635
ISBN: 9781467374989
PURE UUID: 8faa8374-fa7e-4240-9ac3-d8ff20076060
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Date deposited: 30 Nov 2015 11:32
Last modified: 14 Mar 2024 21:46
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Contributors
Author:
Miao Hao
Author:
Jian Hao
Author:
Jin Fu
Author:
Qian Wang
Author:
Chao Tang
Author:
George Chen
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