Journal ArticleDOI
A probabilistic framework based on statistical learning theory for structural reliability analysis of transmission line systems
TLDR
In this paper, a novel application of statistical learning theory to structural reliability analysis of transmission lines considering the uncertainties of climatic variables such as, wind speed, ice thickness and wind angle, and of the resistance of structural elements is described.Abstract:
This paper describes a novel application of statistical learning theory to structural reliability analysis of transmission lines considering the uncertainties of climatic variables such as, wind speed, ice thickness and wind angle, and of the resistance of structural elements. The problem of reliability analysis of complex structural systems with implicit limit state functions is addressed by statistical model selection, where the goal is to select a surrogate model of the finite element solver that provides the value of the performance function for each conductor, insulator or tower element. After determining the performance function for each structural element, Monte Carlo simulation is used to calculate their failure probabilities. The failure probabilities of towers and the entire line are then estimated from the failure probabilities of their elements/components considering the correlation between failure events. In order to quantify the relative importance of line components and provide the ...read more
Citations
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Journal ArticleDOI
Failure analysis of a transmission line considering the joint probability distribution of wind speed and rain intensity
TL;DR: In this article, a conversion approach of rain intensities with various time resolutions based on the meteorological data of 1336 stations was presented, and the failure probability of the employed transmission line under combined wind and rain loads has reached 6.19%, and the value is only 2.88% if ignoring the rainfall effect.
Journal ArticleDOI
Effect of modelling complexities on extreme wind hazard performance of steel lattice transmission towers
TL;DR: An approach to modelling lattice towers that captures buckling and post-buckling, and joint slippage and failure and analyses their effects, while considering uncertainties, through a set of probabilistic, nonlinear pushover analyses in OpenSEES is presented.
Journal ArticleDOI
Reliability assessment of existing transmission line towers considering mechanical model uncertainties
Rafael Rodrigues de Souza,Leandro Fleck Fadel Miguel,Ghyslaine McClure,Fábio Alminhana,João Kaminski +4 more
TL;DR: In this paper, the failure probability of two real transmission line towers (TLTs) built in Brazil are investigated employing different levels of structural modeling complexity and the results show that the older tower design, which presents a topology highly impacted by bolt slippage, is associated with a lower reliability than the current target values.
Journal ArticleDOI
Wind fragility assessment and sensitivity analysis for a transmission tower-line system
TL;DR: In this paper , a wind fragility framework that incorporates the uncertainties of each line component, wind environment, and aerodynamic parameters is proposed for transmission towers, where the users can clearly observe the effect of geometric imperfections on the capacity and failure positions of transmission towers.
References
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