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Surface Discharge Measurements of Polymeric Materials

Surface Discharge Measurements of Polymeric Materials
Surface Discharge Measurements of Polymeric Materials
The measurement of surface charge is an important parameter for evaluating the electrical performance of high voltage insulation materials. The method proposed allows on line measurement of charge and can generate two-dimensional images that represent the charge behaviour on the surface of the material under test. The measurement system utilises Pockels effect by using a wafer of bismuth silicon oxide (BSO) as the sensing element. This method allows non-destructive measurements since no direct electric signal or component interferes with the surface charge. Unlike conventional surface charge measurement systems, this approach can dynamically observe and simultaneously quantify surface charge. This allows the surface charge distribution under the influence of a time varying electrical field to be studied. the system's accuracy and sensitivity have been improved through the use of an optical phase modulator. The system uses a high speed CCD camera and a purpose built synchronisation control circuit to obtain a high temporal resolution. This has allowed the study of charge behaviour at mains frequencies. Surface charge distributions have been observed by applying AC voltages to a needle electrode in direct contact with the BSO. AC surface discharge behaviour of polymeric materials bonded to the back-face of the BSO has also been investigated.
1350-2344
43-52
Sam, Y.L.
5bf15c63-43a4-4fd0-8843-47f2f5bb0a0b
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Davies, A.E.
56d95222-b259-494a-92e9-68b090ec0dcd
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Sutton, S.J.
571c7136-1eb6-44e1-8979-ca0829469a6b
Swingler, S.G.
523e8b41-6313-46a8-bda9-96e8e743810e
Sam, Y.L.
5bf15c63-43a4-4fd0-8843-47f2f5bb0a0b
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Davies, A.E.
56d95222-b259-494a-92e9-68b090ec0dcd
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Sutton, S.J.
571c7136-1eb6-44e1-8979-ca0829469a6b
Swingler, S.G.
523e8b41-6313-46a8-bda9-96e8e743810e

Sam, Y.L., Lewin, P.L., Davies, A.E., Wilkinson, J.S., Sutton, S.J. and Swingler, S.G. (2003) Surface Discharge Measurements of Polymeric Materials. IEE Proceedings - Science, Measurement and Technology, 150 (2), 43-52.

Record type: Article

Abstract

The measurement of surface charge is an important parameter for evaluating the electrical performance of high voltage insulation materials. The method proposed allows on line measurement of charge and can generate two-dimensional images that represent the charge behaviour on the surface of the material under test. The measurement system utilises Pockels effect by using a wafer of bismuth silicon oxide (BSO) as the sensing element. This method allows non-destructive measurements since no direct electric signal or component interferes with the surface charge. Unlike conventional surface charge measurement systems, this approach can dynamically observe and simultaneously quantify surface charge. This allows the surface charge distribution under the influence of a time varying electrical field to be studied. the system's accuracy and sensitivity have been improved through the use of an optical phase modulator. The system uses a high speed CCD camera and a purpose built synchronisation control circuit to obtain a high temporal resolution. This has allowed the study of charge behaviour at mains frequencies. Surface charge distributions have been observed by applying AC voltages to a needle electrode in direct contact with the BSO. AC surface discharge behaviour of polymeric materials bonded to the back-face of the BSO has also been investigated.

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Published date: March 2003
Organisations: Optoelectronics Research Centre, Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 257436
URI: http://eprints.soton.ac.uk/id/eprint/257436
ISSN: 1350-2344
PURE UUID: e5d4129a-f2fe-4467-8153-880b0b0e58f6
ORCID for J.S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

Date deposited: 04 Mar 2004
Last modified: 18 Feb 2021 16:32

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