Název:
Galloping of insulated bundled overhead line simplified analysis
Autoři:
Hračov, Stanislav ; Macháček, Michael Typ dokumentu: Příspěvky z konference Konference/Akce: Engineering mechanics 2024 /30./, Milovy (CZ), 20240514
Rok:
2024
Jazyk:
eng
Abstrakt: Our paper provides an analysis of the susceptibility of a particular bundled overhead line to galloping. It presents a case study of an aerial bundled cable, consisting of four conductors insulated by polyethylene, and used for low-voltage power lines. The susceptibility to loss of stability is analyzed for cable without and with simulated icing observed on similar real conductors. In the first case, the proneness to galloping was excluded based on the results of CFD simulation and the Den Hartog criterion. In latter case, the possible occurrence of galloping was confirmed. The critical wind velocity for the ice-covered cable was calculated utilizing quasi-steady theory. Finally, the amplitudes of limit cycle oscillation for supercritical wind speeds were estimated based on simplified numerical analysis.
Klíčová slova:
aerial bundled cable; galloping; limit cycle oscillation; wind effects Číslo projektu: GA24-13061S (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: Engineering mechanics 2024. Book of full texts, ISBN 978-80-214-6235-9, ISSN 1805-8248
Instituce: Ústav teoretické a aplikované mechaniky AV ČR
(web)
Informace o dostupnosti dokumentu:
Dokument je dostupný v repozitáři Akademie věd. Původní záznam: https://hdl.handle.net/11104/0353605