Evaluation of Progressive Collapse of Structure in Line 230 kV Power Transmission Tower.

Document Type : Original Article

Authors

1 Persian Gulf University

2 Faculty of Engineering/ Persian Gulf University/ Bushehr/ Iran

3 clinical -laboratory center of power system & protection, engineering faculty, Persian gulf univercity, Bushehr, Iran

Abstract

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Progressive failure in the structure due to the occurrence of accidental actions and the chain effect of the failure, leads to the failure of a wide range of the structure or even the total collapse of the structure. Power transmission lines are one of the integral components in the power system. Failure of power transmission line structures is one of the main problems of power companies in different regions of the world. In this research, the progressive failure behavior of a case study of 230 kV power transmission line in Fars province has been investigated. In the present study, two methods of linear dynamic analysis and nonlinear dynamic analysis have been used to identify damage with the alternative load path method. The finite element model of the passing tower (DC0), the end tower (DC90) and the conductors of the 230 kV power transmission line have been modeled in SAP2000 software. In this research, the behavior of progressive failure due to the removal of the base of power transmission towers has been investigated and evaluated. The results showed that the passing and end masts are stable under gravity load due to the failure of one leg. Also, the results showed that due to the removal of one pillar in the progressive failure analysis, the end masts have higher resistance than the passing masts.

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References

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Journal of Advanced Defense Science & Technology
Volume 13, Issue 3 - Serial Number 49
January 2023
Pages 193-202

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History

  • Receive Date: 14 July 2021
  • Revise Date: 22 August 2022
  • Accept Date: 24 September 2022

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