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Space charge dynamics in pressboard-oil-pressboard multilayer system under DC voltages

Space charge dynamics in pressboard-oil-pressboard multilayer system under DC voltages
Space charge dynamics in pressboard-oil-pressboard multilayer system under DC voltages
Converter transformers play a critical role in HVDC power transmission system. Space charge is a general concern for dielectric system under DC field. In this paper, the space charge behavior in a sandwiched oil-pressboard insulation system has been investigated using the pulsed electro-acoustic (PEA) method. The presence of homo-charges in the pressboards bulk and hetero-charges at the two interfaces between oil gap and pressboards leads to the electric field enhancement in the pressboards but reduction in the oil gap. The electric field enhancement is much larger than the value estimated by the Maxwell-Wagner polarization.
978-1-4799-8903-4
112-115
Fu, Mingli
4243dd1d-68a9-43b3-b339-f8f8a28f217f
Luo, Bing
4dbe0dd5-111a-4f9b-ab64-70de9ea104e2
Hou, Shuai
cab140b3-1a0f-4db3-8246-c65ca43589c5
Liao, Yifan
76a5eef4-8312-4e34-9e7c-5392b022661d
Hao, Miao
1ca8b57a-b1a6-40f9-8308-b8dfdfb8aead
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Fu, Mingli
4243dd1d-68a9-43b3-b339-f8f8a28f217f
Luo, Bing
4dbe0dd5-111a-4f9b-ab64-70de9ea104e2
Hou, Shuai
cab140b3-1a0f-4db3-8246-c65ca43589c5
Liao, Yifan
76a5eef4-8312-4e34-9e7c-5392b022661d
Hao, Miao
1ca8b57a-b1a6-40f9-8308-b8dfdfb8aead
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819

Fu, Mingli, Luo, Bing, Hou, Shuai, Liao, Yifan, Hao, Miao and Chen, George (2015) Space charge dynamics in pressboard-oil-pressboard multilayer system under DC voltages. IEEE 11th International Conference on the Properties and Applications of Dielectric Materials, Australia. 19 - 22 Jul 2015. pp. 112-115 .

Record type: Conference or Workshop Item (Paper)

Abstract

Converter transformers play a critical role in HVDC power transmission system. Space charge is a general concern for dielectric system under DC field. In this paper, the space charge behavior in a sandwiched oil-pressboard insulation system has been investigated using the pulsed electro-acoustic (PEA) method. The presence of homo-charges in the pressboards bulk and hetero-charges at the two interfaces between oil gap and pressboards leads to the electric field enhancement in the pressboards but reduction in the oil gap. The electric field enhancement is much larger than the value estimated by the Maxwell-Wagner polarization.

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Published date: 19 July 2015
Venue - Dates: IEEE 11th International Conference on the Properties and Applications of Dielectric Materials, Australia, 2015-07-19 - 2015-07-22
Organisations: EEE

Identifiers

Local EPrints ID: 383668
URI: http://eprints.soton.ac.uk/id/eprint/383668
ISBN: 978-1-4799-8903-4
PURE UUID: b9c0d35b-bff7-49f6-a366-3d2a98089b52

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Date deposited: 17 Nov 2015 17:04
Last modified: 17 Jul 2017 20:11

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Contributors

Author: Mingli Fu
Author: Bing Luo
Author: Shuai Hou
Author: Yifan Liao
Author: Miao Hao
Author: George Chen

University divisions

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