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Space Charge Behavior in Polyethylene under AC Electric Fields

Space Charge Behavior in Polyethylene under AC Electric Fields
Space Charge Behavior in Polyethylene under AC Electric Fields
Polyethylene has been widely used as the insulation of high voltage power cables due to its excellent dielectric properties and electrical performance. The existence of space charge in polymeric insulators is a significant issue with respect to life expectation. It can alter the local electric field and initiate possible partial discharge or eventual breakdown. This appears relatively more severe under dc applied fields than in the ac case. Research results have been extensively reported about space charge in polymers under dc electric stress. In contrast, space charge behavior under ac stress has not been fully examined or understood. However, the improvements in material processing and manufacturing have led to these materials being used under high ac electric fields. The effect of space charge under ac conditions can be an issue affecting the electrical performance of the material and needs to be carefully examined. At Southampton, a fast pulsed electro-acoustic (PEA) system equipped with 2 kHz HV pulse generator has been developed in order to acquire the fast dynamics of space charge in polyethylene under ac voltages. Space charge in low density polyethylene under ac voltages of 0.1 Hz to 50 Hz has been measured and detailed results are discussed in the paper.
105-108
Zhao, J
ccf4084e-9736-4a9a-8a46-92a83257bca7
Xu, Zhiqiang
797f8b0e-a035-4cf9-ac3f-99098a3fdb50
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Zhao, J
ccf4084e-9736-4a9a-8a46-92a83257bca7
Xu, Zhiqiang
797f8b0e-a035-4cf9-ac3f-99098a3fdb50
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e

Zhao, J, Xu, Zhiqiang, Chen, G and Lewin, P L (2011) Space Charge Behavior in Polyethylene under AC Electric Fields. 2011 Conference on Electrical Insulation and Dielectric Phenomena, Cancun, Mexico. 15 - 18 Oct 2011. pp. 105-108 .

Record type: Conference or Workshop Item (Paper)

Abstract

Polyethylene has been widely used as the insulation of high voltage power cables due to its excellent dielectric properties and electrical performance. The existence of space charge in polymeric insulators is a significant issue with respect to life expectation. It can alter the local electric field and initiate possible partial discharge or eventual breakdown. This appears relatively more severe under dc applied fields than in the ac case. Research results have been extensively reported about space charge in polymers under dc electric stress. In contrast, space charge behavior under ac stress has not been fully examined or understood. However, the improvements in material processing and manufacturing have led to these materials being used under high ac electric fields. The effect of space charge under ac conditions can be an issue affecting the electrical performance of the material and needs to be carefully examined. At Southampton, a fast pulsed electro-acoustic (PEA) system equipped with 2 kHz HV pulse generator has been developed in order to acquire the fast dynamics of space charge in polyethylene under ac voltages. Space charge in low density polyethylene under ac voltages of 0.1 Hz to 50 Hz has been measured and detailed results are discussed in the paper.

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More information

Published date: 16 October 2011
Additional Information: Event Dates: 16-19 October 2011
Venue - Dates: 2011 Conference on Electrical Insulation and Dielectric Phenomena, Cancun, Mexico, 2011-10-15 - 2011-10-18
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 272941
URI: http://eprints.soton.ac.uk/id/eprint/272941
PURE UUID: 7b451d8c-555b-4bf9-8926-98708a9da0eb
ORCID for Zhiqiang Xu: ORCID iD orcid.org/0000-0002-6640-7335

Catalogue record

Date deposited: 20 Oct 2011 14:00
Last modified: 18 Feb 2021 17:14

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Contributors

Author: J Zhao
Author: Zhiqiang Xu ORCID iD
Author: G Chen
Author: P L Lewin

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