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논문 상세정보

Unifying calculation of vortex-induced vibrations of overhead conductors

Wind & structures v.8 no.2 , 2005년, pp.79 - 88  

This paper deals with a unified way for calculating vortex-induced vibrations (Aeolian vibrations in transmission line parlance) of undamped single overhead conductors. The main objective of the paper is to identify reduced parameters which would unify the predicted vibration response to the largest possible extent. This is actually done by means of a simple mathematical transformation resulting, for a given terrain (associated to a given wind turbulence intensity), into a single, unified response curve that is applicable to any single multi-layered aluminium conductor. In order to further validate the above process, the predicted, unified response curve is compared with measured response curves drawn from tests run on a full-scale test line using several aluminium-conductor-steel-reinforced (ACSR), all-alloy-aluminium-conductor (AAAC) and aluminium-conductor-alloy-reinforced (ACAR) conductors strung at different tensions. On account of the expected scatter in the results from such field tests, the agreement is shown to be good. The final results are expressed by means of only four different curves pertaining to four different terrain characteristics. These curves may then be used to assess the vibration response of any undamped single, multi-layer aluminium conductor of any diameter, strung at any practical tension.

참고문헌 (15)

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  7. Houle, S., Hardy, C., Lapointe, A. and St-Louis, M. (1987), "Experimental assessment of spacer-damper performance with regard to control of wind-induced vibrations of high voltage transmission lines", IEEE/CSEE Joint Conference on High Voltage Transmission Systems in China, Beijing, China, October. 
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  9. Leblond, A. and Hardy, C. (2000), "Assessment of safe design tension with regard to aeolian vibrations of single overhead conductors", Proceedings of the ESMO Conference, Montreal, October, 202-208. 
  10. Leblond, A. and Hardy, C. (2003), "A unified way for presenting aeolian vibration response of single undamped overhead conductors", Proceedings of the Fifth International Symposium on Cable Dynamics, Santa Margherita Ligure, Italy, September, 263-270. 
  11. Brika, D. and Laneville, A. (1996), "A laboratory investigation of the aeolian power imparted to a conductor using a flexible circular cylinder", IEEE Transactions on Power Delivery, 11(2), 1145-1152. 
  12. CIGRE Study Committee 22 - Working Group 11 - Task Force 1 (1998), "Modelling of aeolian vibration of single conductors : assessment of the technology", Electra, (181), 52-69. 
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  14. CIGRE Study Committee 22 - Working Group on Mechanical Oscillations (1979), "Guide on conductor selfdamping measurements," Electra, (62), 79-90. 
  15. Rawlins, C.B. (1998), "Model of power imparted to a vibrating conductor by turbulent wind", Alcoa Conductor products company, Technical Note no 31. 

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