Wind and Structures

  • 제33권2호
  • /
  • Pages.155-168
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  • 2021
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Study of structural-thermal characteristics of electrified conductors under aeolian vibration

  • Zhang, Meng (School of Civil Engineering, Zhengzhou University) ;
  • Zhou, Jian (School of Civil Engineering, Zhengzhou University) ;
  • Zhao, Guifeng (School of Civil Engineering, Zhengzhou University) ;
  • Xu, Jiankun (School of Civil Engineering, Zhengzhou University) ;
  • Sun, Chao (Department of Civil and Environmental Engineering, Louisiana State University)
  • 투고 : 2021.06.11
  • 심사 : 2021.08.11
  • 발행 : 2021.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

High-voltage transmission lines are featured by electrical and structural properties. Current studies on aeolian vibration of transmission lines focus primarily on structural responses of unenergized conductors. However, moderate aeolian vibration can also enhance the convection heat transfer capability of a transmission line, which improves the steady current-carrying capacity. In this paper, a fluid-structure interaction (FSI) model is established to study the structural thermal characteristics of overhead electrified aluminum conductor steel-reinforced cable (ACSR) conductors. Moreover, the fatigue damage of the energized conductor is analyzed under operational conditions. Results show that there is considerable influence from aeolian vibration on the current-carrying capacity of energized conductors. Compared with the nonelectrical conductors, aeolian vibration can enhance the convective heat transfer effect of energized conductors. Additionally, fatigue life of electrified transmission lines is larger than that of nonelectrical conductors under aeolian vibration. The developed structure-fluid-thermal model can be used to aid design and operation optimization of transmission lines.

키워드

과제정보

This work was funded by the National Natural Science Foundation of China (grant nos. 51578512 and 51108425) and the China Scholarship Council.

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