Rating methods for cables installed in unventilated and partially ventilated surface troughs
Rating methods for cables installed in unventilated and partially ventilated surface troughs
Cables installed in surface troughs are a critical part of many transmission circuits. This paper presents a method for calculating the rating of such circuits using computational fluid dynamics techniques, applied to two common trough designs. One design has solid concrete lids while for the second some lids are replaced by grilles to encourage natural air circulation. For the case of covered troughs with solid concrete lids, the IEC 60287 method was found to be conservative owing to its failure to consider the thermal impact of the ground. Good agreement was observed between the CFD model and an improved analytical formulation by Anders. Modeling of partially ventilated troughs, which at present cannot be rated analytically, shows continuous rating increases of up to 31% over the covered design owing to greater air circulation.
978-1-4577-0276-1
74-78
Pilgrim, J.A.
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Swaffield, D.J.
a49c59cd-9f76-456a-a948-a479b9a1c154
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Payne, D.
9a783127-bf02-4dfd-9a73-501a091a80df
5 June 2011
Pilgrim, J.A.
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Swaffield, D.J.
a49c59cd-9f76-456a-a948-a479b9a1c154
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Payne, D.
9a783127-bf02-4dfd-9a73-501a091a80df
Pilgrim, J.A., Swaffield, D.J., Lewin, P.L. and Payne, D.
(2011)
Rating methods for cables installed in unventilated and partially ventilated surface troughs.
IEEE 2011 Electrical Insulation Conference, Annapolis, Maryland, United States.
05 - 08 Jun 2011.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Cables installed in surface troughs are a critical part of many transmission circuits. This paper presents a method for calculating the rating of such circuits using computational fluid dynamics techniques, applied to two common trough designs. One design has solid concrete lids while for the second some lids are replaced by grilles to encourage natural air circulation. For the case of covered troughs with solid concrete lids, the IEC 60287 method was found to be conservative owing to its failure to consider the thermal impact of the ground. Good agreement was observed between the CFD model and an improved analytical formulation by Anders. Modeling of partially ventilated troughs, which at present cannot be rated analytically, shows continuous rating increases of up to 31% over the covered design owing to greater air circulation.
Text
016.pdf
- Version of Record
Restricted to Registered users only
Request a copy
More information
Published date: 5 June 2011
Additional Information:
Event Dates: 5 - 8 June 2011
Venue - Dates:
IEEE 2011 Electrical Insulation Conference, Annapolis, Maryland, United States, 2011-06-05 - 2011-06-08
Organisations:
Electronics & Computer Science, EEE
Identifiers
Local EPrints ID: 272416
URI: http://eprints.soton.ac.uk/id/eprint/272416
ISBN: 978-1-4577-0276-1
PURE UUID: 01af6729-25f3-45f3-b2a6-9735515b0d2c
Catalogue record
Date deposited: 06 Jun 2011 14:37
Last modified: 15 Mar 2024 03:25
Export record
Contributors
Author:
J.A. Pilgrim
Author:
D.J. Swaffield
Author:
P.L. Lewin
Author:
D. Payne
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics