Results 11 to 20 of about 2,856 (282)
Spatial Galloping Behavior of Iced Conductors under Multimodal Coupling. [PDF]
Sensors (Basel)In this study, the coupled ordinary differential equations for the galloping of the first two modes in iced bundled conductors, including in-plane, out-of-plane, and torsional directions, are derived. Furthermore, through numerical analysis, the critical conditions of this modal galloping are determined in the range of wind speed–sag parameters, and ...
Cui F, Zheng K, Liu P, Wang H.
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Prediction model for aerodynamic coefficients of iced quad bundle conductors based on machine learning method. [PDF]
R Soc Open Sci, 2021 The lift, drag and torsional moment coefficients, versus wind attack angle of iced quad bundle conductors in the cases of different conductor structure, ice and wind parameters are numerically simulated and investigated. With the Latin hypercube sampling
Mou Z, Yan B, Yang H, Cai D, Huang G.
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Buildings, 2022 The galloping condition of an iced eight-bundle conductor tower line system, under different parameters, is studied by using a finite element model of a multi-span iced eight-bundle conductor tower line system.
Bowen Tian +6 more
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Aerodynamic Instability Mechanisms of Iced Eight-Bundled Conductors: Frequency-Domain Analysis and Stability Assessment via Wind Tunnel-CFD Synergy. [PDF]
Sensors (Basel)Icing on transmission lines in cold regions can cause asymmetry in the conductor cross-section. This asymmetry can lead to low-frequency, large-amplitude oscillations, posing a serious threat to the stability and safety of power transmission systems.
Zhong B, Qiao M, Cai M, Hu M.
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Investigation Into the Galloping Characteristics of Multispan Iced Covered Conductors
IEEE Access, 2022 A full multispan two-degree-of-freedom (2-DOF) iced covered transmission line model is presented. Taking multispan conductors as the research object, based on the Hamiltonian principle, a nonlinear galloping model of multispan conductors considering the ...
Jia-Yan Zheng +2 more
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EnergiesTo study the aerodynamic and vibration characteristics of iced conductors under the influence of wind fluctuations, a harmonic superposition method is used to simulate nonuniform wind speeds.
Guifeng Zhao +3 more
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Establishment and Solution Strategy of Galloping Equation of Iced Conductors
Zhongguo dianli, 2021 The galloping of iced overhead conductors is one of the key factors for tripping fault of transmission lines, and threatens the security and stability of power system.
Hui LIU, Zengtai MA, Jikeng LIN
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Zhongguo dianli, 2022 The galloping of iced conductors seriously threatens the safety and stability of power systems, so it has become a focus for research to accurately calculate the transmission line tripping probability caused by the galloping of iced conductors.
Hui LIU +5 more
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Study on looseness characteristics of bolted joints of transmission towers under lateral vibration [PDF]
MATEC Web of Conferences, 2023 transmission towers have been subjected to alternating loads caused by the galloping of iced conductors for a long time, and their fastening bolts are easy to loosen or break, which seriously threatens the safe operation of transmission lines.
Zhu Binrong +4 more
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Modeling Sudden Ice Shedding From Conductor Bundles [PDF]
IEEE Transactions on Power Delivery, 2013 Sudden ice shedding from conductor bundles was modeled numerically and experimentally by improving the approaches proposed formerly for a single cable. The experimental study was carried out on a small-scale laboratory model of one span of a twin bundle.
Kollar, László E., Farzaneh, Masoud
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