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An improved optically based PD detection system for continuous on-line monitoring of HV cables

An improved optically based PD detection system for continuous on-line monitoring of HV cables
An improved optically based PD detection system for continuous on-line monitoring of HV cables
An optically-based remote sensing technique using a laser source, polarization scrambler, standard single mode fibers, fiber polarizer, electro-optic (EO) modulator and optical receiver, for continuous on-line monitoring of partial discharges (PD) in high voltage cable joints is proposed. Both the fiber polarizer and EO modulator, which are placed near cable joints, are passive without any power requirements. An EO modulator with no electrical bias, which operates close to the half-intensity point, was used and proved to have much better light transmission performance and higher measurement sensitivity than the bias modulator approach investigated earlier.

Various multiplexing techniques including optical switches and a fused fiber coupler have been investigated in order to implement multi-channel monitoring so that one laser source can be used to provide light to several fibers. The revised PD optical remote sensing technique has been applied to practical PD measurements on both 132 kV cable joint at the University of Southampton in the UK and 400 kV cable joints at Südkabel GmbH in Germany. Obtained results have verified the principle and demonstrated the effectiveness of the developed technique.
partial discharge, electro-optic modulator, optical remotesensing, continuous on-line monitoring, high voltage cable joints, capacitive coupler
1070-9878
1222-1234
Tian, Y.
8d1f8d1c-71f3-4f17-b254-d925b9aa6061
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Schroeder, G.
65d3de47-cade-41b3-aad2-50717eeb371d
Sutton, S.J.
571c7136-1eb6-44e1-8979-ca0829469a6b
Swingler, S.G.
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Tian, Y.
8d1f8d1c-71f3-4f17-b254-d925b9aa6061
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Schroeder, G.
65d3de47-cade-41b3-aad2-50717eeb371d
Sutton, S.J.
571c7136-1eb6-44e1-8979-ca0829469a6b
Swingler, S.G.
4f13fbb2-7d2e-480a-8687-acea6a4ed735

Tian, Y., Lewin, P.L., Wilkinson, J.S., Schroeder, G., Sutton, S.J. and Swingler, S.G. (2005) An improved optically based PD detection system for continuous on-line monitoring of HV cables. IEEE Transactions on Dielectrics & Electrical Insulation, 12 (6), 1222-1234. (doi:10.1109/TDEI.2005.1561802).

Record type: Article

Abstract

An optically-based remote sensing technique using a laser source, polarization scrambler, standard single mode fibers, fiber polarizer, electro-optic (EO) modulator and optical receiver, for continuous on-line monitoring of partial discharges (PD) in high voltage cable joints is proposed. Both the fiber polarizer and EO modulator, which are placed near cable joints, are passive without any power requirements. An EO modulator with no electrical bias, which operates close to the half-intensity point, was used and proved to have much better light transmission performance and higher measurement sensitivity than the bias modulator approach investigated earlier.

Various multiplexing techniques including optical switches and a fused fiber coupler have been investigated in order to implement multi-channel monitoring so that one laser source can be used to provide light to several fibers. The revised PD optical remote sensing technique has been applied to practical PD measurements on both 132 kV cable joint at the University of Southampton in the UK and 400 kV cable joints at Südkabel GmbH in Germany. Obtained results have verified the principle and demonstrated the effectiveness of the developed technique.

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More information

Published date: 2005
Keywords: partial discharge, electro-optic modulator, optical remotesensing, continuous on-line monitoring, high voltage cable joints, capacitive coupler
Organisations: Optoelectronics Research Centre, EEE

Identifiers

Local EPrints ID: 30217
URI: https://eprints.soton.ac.uk/id/eprint/30217
ISSN: 1070-9878
PURE UUID: fa1ad1d6-3a70-4243-a779-c513ae989c93
ORCID for J.S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

Date deposited: 11 May 2006
Last modified: 19 Jul 2019 01:25

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