Case study of galloping in a low-voltage insulated bundled overhead line

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00600488" target="_blank" >RIV/68378297:_____/24:00600488 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Case study of galloping in a low-voltage insulated bundled overhead line
Original language description
An analysis of the susceptibility of a bundled overhead line to galloping is presented, focusing on a case study of an aerial cable composed of four conductors insulated with polyethylene, used in low-voltage power lines. The susceptibility to instability is analyzed for the cable both with and without simulated icing, as observed on similar real conductors. In the first case, the proneness to galloping was ruled out based on the results of a CFD simulation and the Den Hartog criterion. In the second case, the potential for galloping was confirmed. The critical wind velocity for the ice-covered cable was calculated using quasi-steady theory. Finally, the amplitudes of limit cycle oscillation for supercritical wind speeds were estimated through a simplified numerical analysis. Numerical simulations were also carried out for several different angles of attack—i.e., various rotational angles of the line's cross-section relative to the wind direction—particularly close to the critical angles, to determine and analyze the maximum possible dynamic response.
Czech name
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Czech description
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Project
<a href="/en/project/GA24-13061S" target="_blank" >GA24-13061S: The Combined Effects of Aeroelastic Instabilities on Civil Engineering Structures</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Computational mechanics 2024. Proceedings of computational mechanics 2024
ISBN
978-80-261-1249-5
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
40-43
Publisher name
University of West Bohemia
Place of publication
Plzeň
Event location
Srní
Event date
Nov 4, 2024
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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