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Space charge dynamics in lapped dielectric

Space charge dynamics in lapped dielectric
Space charge dynamics in lapped dielectric
The lapped dielectric which has superior electrical, mechanical and chemical properties has been used for HVDC cable insulation for many years. Space charge dynamics in such insulation have been studied in this paper. Three kinds of laboratory made samples with polypropylene and Kraft paper laminated have been investigated by the pulsed electroacoustic (PEA) technique under 5kV/mm up to 50kV/mm at room temperature. No charge injection was observed in polypropylene sample when stressed from 5kV/mm to10 kV/mm. The results of polypropylene lapped Kraft paper (PPLP) sample show that charge peaks at the two electrodes drop very quickly after applying voltage. At the same time, a large amount of charges accumulate at the interface area with the same polarity as the closed electrode. The other lapped sample with Kraft paper between two polypropylene layers was also studied at 5kV/mm. The opposite charge polarity peaks were found from the interfaces, suggesting that the ionization in Kraft paper may have a major influence on the electrical performance of the lapped dielectric
978 - 1 - 4673 - 7498 - 9
Xu, Zhiqiang
797f8b0e-a035-4cf9-ac3f-99098a3fdb50
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Xu, Zhiqiang
797f8b0e-a035-4cf9-ac3f-99098a3fdb50
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819

Xu, Zhiqiang and Chen, George (2015) Space charge dynamics in lapped dielectric. IEEE Conference on Electrical Insulation and Dielectric Phenomena, United States. 18 - 20 Oct 2015. 4 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

The lapped dielectric which has superior electrical, mechanical and chemical properties has been used for HVDC cable insulation for many years. Space charge dynamics in such insulation have been studied in this paper. Three kinds of laboratory made samples with polypropylene and Kraft paper laminated have been investigated by the pulsed electroacoustic (PEA) technique under 5kV/mm up to 50kV/mm at room temperature. No charge injection was observed in polypropylene sample when stressed from 5kV/mm to10 kV/mm. The results of polypropylene lapped Kraft paper (PPLP) sample show that charge peaks at the two electrodes drop very quickly after applying voltage. At the same time, a large amount of charges accumulate at the interface area with the same polarity as the closed electrode. The other lapped sample with Kraft paper between two polypropylene layers was also studied at 5kV/mm. The opposite charge polarity peaks were found from the interfaces, suggesting that the ionization in Kraft paper may have a major influence on the electrical performance of the lapped dielectric

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More information

Published date: 18 October 2015
Venue - Dates: IEEE Conference on Electrical Insulation and Dielectric Phenomena, United States, 2015-10-18 - 2015-10-20
Organisations: EEE

Identifiers

Local EPrints ID: 383627
URI: http://eprints.soton.ac.uk/id/eprint/383627
ISBN: 978 - 1 - 4673 - 7498 - 9
PURE UUID: 657c599a-c915-4a28-96bf-a88d8b4b1930
ORCID for Zhiqiang Xu: ORCID iD orcid.org/0000-0002-6640-7335

Catalogue record

Date deposited: 27 Nov 2015 14:18
Last modified: 21 Nov 2019 01:33

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