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Studies on the applicability of the Pockels technique to measure surface discharge in liquid dielectrics

Studies on the applicability of the Pockels technique to measure surface discharge in liquid dielectrics
Studies on the applicability of the Pockels technique to measure surface discharge in liquid dielectrics
This paper studies the feasibility of applying the electro-optical Pockels technique to measure surface discharge at a solid-liquid insulation interface. The principle of the method is based on the Pockels characteristic of the Bismuth Silicon Oxide (BSO) sensing crystal. The presence of surface charge induces an electric field across the crystal which in turn linearly changes the polarisation state of the incoming polarised light. This change in the light polarisation state can be deduced from the recorded light intensity and hence surface charge density can be calculated. The distribution of charge generated from a needle electrode immersed in mineral oil under two cycles of AC voltage was measured and results are compared with those obtained in gas and gas-liquid structures.
978-1-4244-1586-1
1-4
Tran, T.N.
1554bb74-41c5-437f-85f9-e262160c5432
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swaffield, D.J.
d5828393-2cfb-4f1b-ace4-cd44e0ee5542
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Tran, T.N.
1554bb74-41c5-437f-85f9-e262160c5432
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swaffield, D.J.
d5828393-2cfb-4f1b-ace4-cd44e0ee5542
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca

Tran, T.N., Lewin, P.L., Swaffield, D.J. and Wilkinson, J.S. (2008) Studies on the applicability of the Pockels technique to measure surface discharge in liquid dielectrics. ICDL 2008. IEEE International Conference on Dielectric Liquids, Poitiers, France. 29 Jun - 02 Jul 2008. pp. 1-4 . (doi:10.1109/ICDL.2008.4622465).

Record type: Conference or Workshop Item (Paper)

Abstract

This paper studies the feasibility of applying the electro-optical Pockels technique to measure surface discharge at a solid-liquid insulation interface. The principle of the method is based on the Pockels characteristic of the Bismuth Silicon Oxide (BSO) sensing crystal. The presence of surface charge induces an electric field across the crystal which in turn linearly changes the polarisation state of the incoming polarised light. This change in the light polarisation state can be deduced from the recorded light intensity and hence surface charge density can be calculated. The distribution of charge generated from a needle electrode immersed in mineral oil under two cycles of AC voltage was measured and results are compared with those obtained in gas and gas-liquid structures.

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Published date: 2008
Venue - Dates: ICDL 2008. IEEE International Conference on Dielectric Liquids, Poitiers, France, 2008-06-29 - 2008-07-02

Identifiers

Local EPrints ID: 70879
URI: http://eprints.soton.ac.uk/id/eprint/70879
ISBN: 978-1-4244-1586-1
PURE UUID: e7f6fa3f-1862-4781-8acc-9424aac5107b
ORCID for J.S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

Date deposited: 24 Feb 2010
Last modified: 21 May 2021 01:32

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