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Electric field determination of polymeric dc power cable in the presence of space charge

Electric field determination of polymeric dc power cable in the presence of space charge
Electric field determination of polymeric dc power cable in the presence of space charge
Space charge in polymeric power cables has been previously measured by the pulsed electroacoustic (PEA) technique and its influence on electric field distribution has been estimated assuming that the conductivity is independent of electric field. In this paper we proposed a method of determining electric field distribution considering the influence of the effect of electric field on the conductivity. The cable insulation is divided into thin layers with different conductivities and space charge present in the each layer is viewed as the consequence caused by difference in conductivity. Based on the hopping conduction mechanisms, it is possible to compute electric field distribution across the cable insulation. Compared with the electric field distribution without considering change in conductivity, the new proposed method shows reduction at the maximum electric field. However, the position of the maximum electric field shifts depending on space charge distribution.
978-961-90234-9-5
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Choo, W
05fc0d4b-ac1c-4481-a8be-b21fcb9d9bd4
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Choo, W
05fc0d4b-ac1c-4481-a8be-b21fcb9d9bd4
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d

(2007) Electric field determination of polymeric dc power cable in the presence of space charge. 15th International Symposium on High Voltage Engineering, Slovenia. 27 - 31 Aug 2007.

Record type: Conference or Workshop Item (Other)

Abstract

Space charge in polymeric power cables has been previously measured by the pulsed electroacoustic (PEA) technique and its influence on electric field distribution has been estimated assuming that the conductivity is independent of electric field. In this paper we proposed a method of determining electric field distribution considering the influence of the effect of electric field on the conductivity. The cable insulation is divided into thin layers with different conductivities and space charge present in the each layer is viewed as the consequence caused by difference in conductivity. Based on the hopping conduction mechanisms, it is possible to compute electric field distribution across the cable insulation. Compared with the electric field distribution without considering change in conductivity, the new proposed method shows reduction at the maximum electric field. However, the position of the maximum electric field shifts depending on space charge distribution.

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More information

Published date: 2007
Additional Information: Event Dates: 27 - 31 August 2007
Venue - Dates: 15th International Symposium on High Voltage Engineering, Slovenia, 2007-08-27 - 2007-08-31
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 264480
URI: http://eprints.soton.ac.uk/id/eprint/264480
ISBN: 978-961-90234-9-5
PURE UUID: 0946c32f-954a-4680-a00a-51a0f1576935

Catalogue record

Date deposited: 06 Sep 2007
Last modified: 18 Jul 2017 07:35

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