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- 2013 (5) (entfernen)
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- Beitrag zu einem Tagungsband (3)
- Vortrag (2)
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- Field measurements (1)
- Monitoring (1)
- Overhead transmission lines (1)
- Wind loading (1)
Eingeladener Vortrag
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The paper focuses on a unique project of wind measurements along a high voltage Overhead transmission line. For reliable information on the horizontal distribution of the wind flow, 13 positions along two spans of an overhead electrical line of about 400 m length each are selected for wind velocity measurements. Simultaneously, the structural response is measured at the towers. Preliminary analyses aim at the appraisal of results what is important for the upcoming system identification. It is shown that system identification of long span transmission lines exposed to gusty wind is possible by derivation of a so called joint acceptance function which describes the admittance from wind velocity to the systems response.
The paper focuses on a recently launched project of wind measurements along a high voltage overhead transmission line. For reliable information on the actual horizontal distribution of the wind flow, 13 positions along two spans of an overhead electrical line of about 400 m length each are selected for wind measurements. Simultaneously, the structural response is measured at the towers. Preliminary analyses aim at the system identification of long span transmission lines exposed to gusty wind by derivation of a so called joint acceptance function which describes the admittance from wind velocity to the system's response. It can be shown that measured structural response can accurately be described using a statistical model which accounts for the irregularity of the wind as well as the structures behaviour.
Im Rahmen eines Forschungsprojekts zur Tragverhaltensstudie von Freileitungsseilen unter Böenbeanspruchung soll durch die Kombination von Naturmessungen, Windkanalversuchen und numerischen Simulationen versucht werden, das mechanische Verhalten von Freileitungsseilen und turbulenter Windbeanspruchung genauer abzubilden. Die Unsicherheiten bei der Modellierung dieses Zufallsprozesses sollen durch Windkanalversuche und Naturmessungen auf ein Minimum reduziert werden. Im vorliegenden Beitrag werden Ergebnisse von Simulationen mit den Beobachtungen aus den Naturmessungen verglichen und bewertet. Ziel des Forschungsvorhabens ist die Bewertung der aktuellen Bemessungsvorschriften für die Berücksichtigung von Wind auf Leiterseile.