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Space charge measurement in polymer insulated power cables using flat ground electrode PEA

Space charge measurement in polymer insulated power cables using flat ground electrode PEA
Space charge measurement in polymer insulated power cables using flat ground electrode PEA
Data processing methods used to accurately determine the space charge and electric stress distributions in DC power cables using the pulsed electroacoustic (PEA) system are described. Due to the coaxial geometry and the thick-walled insulation of highvoltage cables, factors such as divergence, attenuation and dispersion of the propagated acoustic pressure wave in the PEA can strongly influence the resultant measurements. These factors are taken into account ensuring accurate measurements to be made. Most importantly, a method is presented to determine the electric stress profile across the insulation due to both the divergent applied field and that as a consequence of trapped charge in the bulk of the insulating material. Results of spacecharge measurements and the corresponding derived electric stress distributions in XLPE DC cables are presented.
0143-702X
89-96
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819

Fu, M and Chen, George (2003) Space charge measurement in polymer insulated power cables using flat ground electrode PEA. IEE Proceedings A, 150 (2), 89-96.

Record type: Article

Abstract

Data processing methods used to accurately determine the space charge and electric stress distributions in DC power cables using the pulsed electroacoustic (PEA) system are described. Due to the coaxial geometry and the thick-walled insulation of highvoltage cables, factors such as divergence, attenuation and dispersion of the propagated acoustic pressure wave in the PEA can strongly influence the resultant measurements. These factors are taken into account ensuring accurate measurements to be made. Most importantly, a method is presented to determine the electric stress profile across the insulation due to both the divergent applied field and that as a consequence of trapped charge in the bulk of the insulating material. Results of spacecharge measurements and the corresponding derived electric stress distributions in XLPE DC cables are presented.

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Published date: March 2003
Organisations: EEE

Identifiers

Local EPrints ID: 266976
URI: http://eprints.soton.ac.uk/id/eprint/266976
ISSN: 0143-702X
PURE UUID: f4507562-1337-4cb9-b140-775c9dc44910

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Date deposited: 11 Dec 2008 12:13
Last modified: 18 Nov 2019 20:48

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Contributors

Author: M Fu
Author: George Chen

University divisions

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