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Space charge characteristics of multi-layer oil-paper insulation under different DC voltages

Space charge characteristics of multi-layer oil-paper insulation under different DC voltages
Space charge characteristics of multi-layer oil-paper insulation under different DC voltages
In this paper, space charge in oil-paper insulation system has been investigated using the pulsed electroacoustic (PEA) technique. A series of measurements were carried out when the insulation system was subjected to different applied voltages. Charge dynamics in the insulation system during the volts-on, volts-off and decay have been analyzed. It has been found that homocharge injection occurred both at the anode and the cathode. Positive charges are observed to accumulate in the layers, which indicate that the oil-paper layer interfaces act as a barrier for positive charges. The decay tests showed that after 30min, about a quarter of space charges remained in the sample, about 90% charges disappeared after 2 hours. Finally, total charge variation in these tests were analyzed.
Space Charge, Oil-paper, DC Voltage, Multi-layer
978-1-4244-4366-6
914-917
Tang, Chao
dcd2c9bd-9fa4-4b23-bb5b-b0295aaba4cf
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Fu, Mingli
4243dd1d-68a9-43b3-b339-f8f8a28f217f
Liao, Ruijing
9ab10925-24e6-481a-8a0e-af34260afea2
Tang, Chao
dcd2c9bd-9fa4-4b23-bb5b-b0295aaba4cf
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Fu, Mingli
4243dd1d-68a9-43b3-b339-f8f8a28f217f
Liao, Ruijing
9ab10925-24e6-481a-8a0e-af34260afea2

Tang, Chao, Chen, George, Fu, Mingli and Liao, Ruijing (2009) Space charge characteristics of multi-layer oil-paper insulation under different DC voltages. The 9th International Conference on Properties and Applications of Dielectric Materials, China. 19 - 23 Jul 2009. pp. 914-917 .

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper, space charge in oil-paper insulation system has been investigated using the pulsed electroacoustic (PEA) technique. A series of measurements were carried out when the insulation system was subjected to different applied voltages. Charge dynamics in the insulation system during the volts-on, volts-off and decay have been analyzed. It has been found that homocharge injection occurred both at the anode and the cathode. Positive charges are observed to accumulate in the layers, which indicate that the oil-paper layer interfaces act as a barrier for positive charges. The decay tests showed that after 30min, about a quarter of space charges remained in the sample, about 90% charges disappeared after 2 hours. Finally, total charge variation in these tests were analyzed.

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More information

Published date: 19 July 2009
Additional Information: Event Dates: 19 - 23 July 2009
Venue - Dates: The 9th International Conference on Properties and Applications of Dielectric Materials, China, 2009-07-19 - 2009-07-23
Keywords: Space Charge, Oil-paper, DC Voltage, Multi-layer
Organisations: EEE

Identifiers

Local EPrints ID: 267784
URI: http://eprints.soton.ac.uk/id/eprint/267784
ISBN: 978-1-4244-4366-6
PURE UUID: d97a7217-30d8-4765-949d-946f4b422304

Catalogue record

Date deposited: 18 Aug 2009 09:42
Last modified: 28 Oct 2019 21:21

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