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Space Charge Accumulation under Effects of Temperature Gradient and Applied Voltage Reversal on Solid Dielectric DC Cable

Space Charge Accumulation under Effects of Temperature Gradient and Applied Voltage Reversal on Solid Dielectric DC Cable
Space Charge Accumulation under Effects of Temperature Gradient and Applied Voltage Reversal on Solid Dielectric DC Cable
A well-known fact of the existence and accumulation of space charge within the insulating material poses threat to the reliability in the operation of dc power cables. When power cables are loaded under high voltage direct current (HVDC), temperature gradient is developed across the insulation. Results of space charge evolution in commercial ac XLPE power cables under an application of 80 kV dc supply at different temperature gradients and during external voltage reversal are discussed in this paper. The space charge distributions were measured across the insulation of the cable by means of a modified pulsed electroacoustic (PEA) system with a current transformer attached. Therefore, a replica of a power cable under load conditions could be obtained, which allows us to investigate the formation, migration and accumulation of space charges in a power cable both without and with different temperature gradients consideration across the bulk of the insulating material during voltage reversal. Discussion will be made thoroughly in order to understand the space charge phenomenon of power cable under its service temperature as space charge accumulation during polarity reversal plays an important factor on the electric field distribution within the insulation material.
PEA, space charge, XLPE insulated power cables, voltage polarity reversal, temperature gradient.
978-1-4244-4368-0
946-949
Choo, Wilson
24ec08eb-d40d-48df-a4f0-63d31c025485
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Swingler, Steve
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Choo, Wilson
24ec08eb-d40d-48df-a4f0-63d31c025485
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Swingler, Steve
4f13fbb2-7d2e-480a-8687-acea6a4ed735

Choo, Wilson, Chen, George and Swingler, Steve (2009) Space Charge Accumulation under Effects of Temperature Gradient and Applied Voltage Reversal on Solid Dielectric DC Cable. International Conference on Properties and Applications of Dielectric Materials, China. 19 - 23 Jul 2009. pp. 946-949 .

Record type: Conference or Workshop Item (Poster)

Abstract

A well-known fact of the existence and accumulation of space charge within the insulating material poses threat to the reliability in the operation of dc power cables. When power cables are loaded under high voltage direct current (HVDC), temperature gradient is developed across the insulation. Results of space charge evolution in commercial ac XLPE power cables under an application of 80 kV dc supply at different temperature gradients and during external voltage reversal are discussed in this paper. The space charge distributions were measured across the insulation of the cable by means of a modified pulsed electroacoustic (PEA) system with a current transformer attached. Therefore, a replica of a power cable under load conditions could be obtained, which allows us to investigate the formation, migration and accumulation of space charges in a power cable both without and with different temperature gradients consideration across the bulk of the insulating material during voltage reversal. Discussion will be made thoroughly in order to understand the space charge phenomenon of power cable under its service temperature as space charge accumulation during polarity reversal plays an important factor on the electric field distribution within the insulation material.

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Space_Charge_Accumulation_under_Effects_of_Temperature_Gradient_and_Applied_Voltage_Reversal_on_Solid_Dielectric_DC_Cable.pdf - Version of Record
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More information

Published date: 21 July 2009
Additional Information: Event Dates: 19 - 23 July 2009
Venue - Dates: International Conference on Properties and Applications of Dielectric Materials, China, 2009-07-19 - 2009-07-23
Keywords: PEA, space charge, XLPE insulated power cables, voltage polarity reversal, temperature gradient.
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 267709
URI: https://eprints.soton.ac.uk/id/eprint/267709
ISBN: 978-1-4244-4368-0
PURE UUID: 6e3c016f-68d1-4aa2-9a81-44ef809f4569

Catalogue record

Date deposited: 28 Jul 2009 12:50
Last modified: 30 Jul 2019 18:59

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