Wind fragility assessment and sensitivity analysis for a transmission tower-line system

Wang, Jia; Li, Hong‐Nan; Fu, Xing; Dong, Zhi-Qian; Sun, Zhi-Guo

doi:10.1016/j.jweia.2022.105233

Cited by 22 publications

(3 citation statements)

References 60 publications

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“…This indicates that the transmission tower structure at higher segments is influenced in all three directions under complex wind field conditions, while at lower segments, the z-direction exhibits more pronounced variations. These findings are consistent with previous research [27]. Consequently, in the lower segments of the structure, there should be a heightened focus on mitigating or eliminating potential risks associated with the self-weight of all elements in structural design and optimization.…”

Section: Simulation Of Wind Fields On Transmission Towerssupporting

confidence: 90%

Wind Field Digital Twins Sandbox System for Transmission Towers

Zhang,

Li,

Feng

et al. 2023

Sensors

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Given the digitalization trends within the field of engineering, we propose a practical approach to engineering digitization. This method is established based on a physical sandbox model, camera equipment and simulation technology. We propose an image processing modeling method to establish high-precision continuous mathematical models of transmission towers. The calculation of the wind field is realized by using wind speed calculations, a load-wind-direction-time algorithm and the Continuum-Discontinuum Element Method (CDEM). The sensitivity analysis of displacement- and acceleration-controlled transmission tower loads under two different wind direction conditions is conducted. The results show that the digital model exhibits a proportional relationship with the physical dimensions of the transmission tower model. The error between the numerical simulation results and the experimental results falls within a reasonable range. Nodes at higher positions of the transmission tower experience significantly higher forces compared to those at lower positions, and the structural forms with larger windward projected areas yield similar simulation results. The proposed digital twin system can help monitor the performance of structural bodies and assess the disaster degree in extreme conditions. It can guide specific maintenance and repair tasks.

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Section: Simulation Of Wind Fields On Transmission Towerssupporting

confidence: 90%

Wind Field Digital Twins Sandbox System for Transmission Towers

Zhang,

Li,

Feng

et al. 2023

Sensors

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“…Fan, W et al performed a vibration analysis of a periodic multi-span transmission line system, analyzing its bandgap characteristics [33]. Wang, J et al proposed a wind vulnerability framework with uncertainties in each line component, wind environment, and aerodynamic parameters of transmission towers [34]. Bai, JT et al innovatively investigated the three-point bending collapse of DRTWT by combining internal and external topological descriptor functions for structural optimization while optimizing numerical algorithms to validate the frame model [35][36][37].…”

Section: Plos Onementioning

confidence: 99%

Enhancing transmission type frame structures: A BBO algorithm-based integrated design approach

Yang,

Wang

2024

PLoS ONE

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The stable and site-specific operation of transmission lines is a crucial safeguard for grid functionality. This study introduces a comprehensive optimization design method for transmission line crossing frame structures based on the Biogeography-Based Optimization (BBO) algorithm, which integrates size, shape, and topology optimization. By utilizing the BBO algorithm to optimize the truss structure’s design variables, the method ensures the structure’s economic and practical viability while enhancing its performance. The optimization process is validated through finite element analysis, confirming the optimized structure’s compliance with strength, stiffness, and stability requirements. The results demonstrate that the integrated design of size, shape, and topology optimization, as opposed to individual optimizations of size or shape and topology, yields the lightest structure mass and a maximum stress of 151.4 MPa under construction conditions. These findings also satisfy the criteria for strength, stiffness, and stability, verifying the method’s feasibility, effectiveness, and practicality. This approach surpasses traditional optimization methods, offering a more effective solution for complex structural optimization challenges, thereby enhancing the sustainable utilization of structures.

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“…Impacts of the climatic factors and their changes on the reliability, stability and operability of electric power systems are studied for various countries: Europe [1,2], the USA [3,4], China [5,6], Russia [7,8,9]. The high relevance of this topic is linked to increased requirements towards energy security, including challenges linked with decentralization of infrastructure facilities.…”

Section: Introductionmentioning

confidence: 99%

Actual and design wind loads for overhead transmission lines in the Central European part of Russia

Loktionov,

Fedotova,

Kondrateva

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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This paper reveals an impact of the climatic loads on the sustainable operation of power grid facilities. An overview is provided considering various international standards related to the design of overhead transmission lines. The aim of the research was to analyze and compare the actual and design values of wind loads for transmission lines located in the Central European part of Russia and operated by the power grid company “Rosseti Center and Volga Region”. An analysis of wind load dynamics has been carried out considering the territory of 9 subjects of Russia and 1983-2022 timeframe. The actual climate data were computed according to the direct measurements of the weather stations. Nomograms of the maximum annual wind speeds are formed utilizing the first limiting Gumbel distribution for two climatic regions of the research area. The retrospective wind loads values were compared against the design values. The results of the study show that climate standards should be updated more frequently as it is the case nowadays, in particular, it relates to revision of existing wind loads or recalculation of wind speed correction factors for the near future.

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Wind fragility assessment and sensitivity analysis for a transmission tower-line system

Cited by 22 publications

References 60 publications

Wind Field Digital Twins Sandbox System for Transmission Towers

Wind Field Digital Twins Sandbox System for Transmission Towers

Enhancing transmission type frame structures: A BBO algorithm-based integrated design approach

Actual and design wind loads for overhead transmission lines in the Central European part of Russia

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