Real-time electric field estimation for HVDC cable dielectrics
Real-time electric field estimation for HVDC cable dielectrics
For HVDC cables, dielectric field inversion normally occurs due to the temperature drop across the insulation. Unlike AC applications where the field distribution is primarily determined by the cable geometry, the DC field can be significantly affected by the load current and hence the dielectric temperature profile. Higher temperature drops lead to higher electrical stress at the insulation screen, increasing the risk of breakdown. Thus, a real-time dielectric DC field estimator would be very useful to prevent over-stressing the cable. Theoretically, the electrical field can be calculated from the overall dielectric temperature drop. Therefore, by monitoring the temperature profile and integrating with mathematical algorithms, the DC field distribution might be assessed in real time. In this paper, a mathematical algorithm for calculation of the DC field is demonstrated, using standard online temperature monitoring techniques.
condition monitoring, electric breakdown, power
cable insulation
978-1-4799-7354-5
1-4
Huang, Z.Y.
2895deda-7290-43b6-bf3c-3ebb118696dd
Pilgrim, J.A.
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swingler, S.G.
4f13fbb2-7d2e-480a-8687-acea6a4ed735
7 June 2015
Huang, Z.Y.
2895deda-7290-43b6-bf3c-3ebb118696dd
Pilgrim, J.A.
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swingler, S.G.
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Huang, Z.Y., Pilgrim, J.A., Lewin, P.L. and Swingler, S.G.
(2015)
Real-time electric field estimation for HVDC cable dielectrics.
2015 IEEE Electrical Insulation Conference (EIC), Seattle, United States.
07 - 10 Jun 2015.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
For HVDC cables, dielectric field inversion normally occurs due to the temperature drop across the insulation. Unlike AC applications where the field distribution is primarily determined by the cable geometry, the DC field can be significantly affected by the load current and hence the dielectric temperature profile. Higher temperature drops lead to higher electrical stress at the insulation screen, increasing the risk of breakdown. Thus, a real-time dielectric DC field estimator would be very useful to prevent over-stressing the cable. Theoretically, the electrical field can be calculated from the overall dielectric temperature drop. Therefore, by monitoring the temperature profile and integrating with mathematical algorithms, the DC field distribution might be assessed in real time. In this paper, a mathematical algorithm for calculation of the DC field is demonstrated, using standard online temperature monitoring techniques.
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More information
Published date: 7 June 2015
Venue - Dates:
2015 IEEE Electrical Insulation Conference (EIC), Seattle, United States, 2015-06-07 - 2015-06-10
Keywords:
condition monitoring, electric breakdown, power
cable insulation
Organisations:
EEE
Identifiers
Local EPrints ID: 378044
URI: http://eprints.soton.ac.uk/id/eprint/378044
ISBN: 978-1-4799-7354-5
PURE UUID: 13fc4c62-8d2c-43d6-af3a-317301272326
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Date deposited: 15 Jun 2015 12:40
Last modified: 15 Mar 2024 03:25
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Contributors
Author:
Z.Y. Huang
Author:
J.A. Pilgrim
Author:
P.L. Lewin
Author:
S.G. Swingler
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