Open Access

ARTICLE

Analysis of the Quasi-Static Buffeting Responses of Transmission Lines to Moving Downburst

Qigang Sun¹, Jian Wu¹, Dahai Wang^2,*, Yue Xiang², Haitao Liu¹, Xiaobin Sun³

1 Economic and Technology Research Institute of State Grid Shandong Electric Power Company, Jinan, 250000, China
2 Wuhan University of Technology, Wuhan, 430070, China
3 State Grid Shandong Electric Power Company, Jinan, 250000, China

* Corresponding Author: Dahai Wang. Email:

(This article belongs to this Special Issue: Numerical Modeling and Simulation for Structural Safety and Disaster Mitigation)

Computer Modeling in Engineering & Sciences 2020, 124(1), 287-302. https://doi.org/10.32604/cmes.2020.09118

Received 13 November 2019; Accepted 06 February 2020; Issue published 19 June 2020

Abstract

Downburst event is identified as a major cause to failure of transmission lines in non-coastal regions. In this paper, a novel nonlinear analytical frame for quasi-static buffeting responses of hinged and multi-span insulator-line systems are derived based on the theory of cable structure. The closed-form solutions are presented and applied to predict nonlinear response including displacements and other reactions of the system subjected to a moving downburst wind in a case study. Accuracy and efficiency of the derived analytical frame are validated via comparisons with results from finite element method.

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