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Electric Field Determination in DC Polymeric Power Cable in the Presence of Space Charge

Electric Field Determination in DC Polymeric Power Cable in the Presence of Space Charge
Electric Field Determination in DC Polymeric Power Cable in the Presence of Space Charge
The pulsed electroacoustic (PEA) technique was used to perform space charge measurements in polymeric power cables. However, for a practical dc power cable the electric field is affected by conductivity of the material, which is a function of both temperature and electric field. The coupled problems inflict difficulties to identify the electric field distribution in high voltage (HV) cables, which therefore poses threat to the reliability in operation of dc power cables. In this paper we proposed a method of determining electric field distribution in XLPE power cable, where under temperature gradient the existence of space charge density of the cable is determined by means of a modified PEA system. Commercial 11 kV ac XLPE power cable is applied and measured under an applied dc voltage of 80 kV. The space charge across the insulation was obtained and COMSOL Multiphysics software package is used to accurately determine the electric field distribution in the dc power cable by considering the influences of both the effects of temperature and electric field on the conductivity of the insulating material. Therefore, the results of the numerical modelling shall give us a clearer representation of the electric field distribution in HVDC cables.
Space Charge, HVDC, Electric Field
1-4244-1482-2
489-492
Choo, Wilson
24ec08eb-d40d-48df-a4f0-63d31c025485
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Choo, Wilson
24ec08eb-d40d-48df-a4f0-63d31c025485
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819

Choo, Wilson and Chen, George (2007) Electric Field Determination in DC Polymeric Power Cable in the Presence of Space Charge. At IEEE Conference on Electrical Insulation and Dielectric Phenomena IEEE Conference on Electrical Insulation and Dielectric Phenomena, Canada. 14 - 17 Oct 2007. pp. 489-492.

Record type: Conference or Workshop Item (Poster)

Abstract

The pulsed electroacoustic (PEA) technique was used to perform space charge measurements in polymeric power cables. However, for a practical dc power cable the electric field is affected by conductivity of the material, which is a function of both temperature and electric field. The coupled problems inflict difficulties to identify the electric field distribution in high voltage (HV) cables, which therefore poses threat to the reliability in operation of dc power cables. In this paper we proposed a method of determining electric field distribution in XLPE power cable, where under temperature gradient the existence of space charge density of the cable is determined by means of a modified PEA system. Commercial 11 kV ac XLPE power cable is applied and measured under an applied dc voltage of 80 kV. The space charge across the insulation was obtained and COMSOL Multiphysics software package is used to accurately determine the electric field distribution in the dc power cable by considering the influences of both the effects of temperature and electric field on the conductivity of the insulating material. Therefore, the results of the numerical modelling shall give us a clearer representation of the electric field distribution in HVDC cables.

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More information

Published date: 2007
Additional Information: Event Dates: OCTOBER 14-17, 2007
Venue - Dates: IEEE Conference on Electrical Insulation and Dielectric Phenomena, Canada, 2007-10-14 - 2007-10-17
Keywords: Space Charge, HVDC, Electric Field
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 264767
URI: https://eprints.soton.ac.uk/id/eprint/264767
ISBN: 1-4244-1482-2
PURE UUID: 6c314e83-1d2e-4a69-b0f1-9c0308198779

Catalogue record

Date deposited: 31 Oct 2007
Last modified: 18 Jul 2017 07:32

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