Results 1 to 10 of about 710 (95)
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
doaj +5 more sources
Numerical Simulation of Galloping Characteristics of Multi-Span Iced Eight-Bundle Conductors
Frontiers in Energy Research, 2022 In this article, the numerical model of the multi-span iced eight-bundle conductor is established using the nonlinear finite element method, the galloping of the line under different parameters is simulated, and the tension in the galloping process is ...
Ding Shunli +8 more
doaj +5 more sources
Numerical Analysis on the Sub-Span Oscillation of Iced Eight-Bundle Conductors During Galloping
Frontiers in Energy Research, 2022 Under the excitement of wind loads, UHV transmission lines are subject to two types of vibration phenomena, namely, sub-span oscillation and galloping.
Liu Yu +10 more
doaj +5 more sources
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.
europepmc +4 more sources
SensorsIcing 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. In this study, the aerodynamic characteristics of crescent-shaped and sector-shaped iced eight-bundled ...
Bolin Zhong +3 more
openaire +3 more sources
Shock and Vibration, 2020 Due to the occurrence of whole-span and subspan vibration at the same time during the galloping of the iced bundle conductors, the distance between the subconductors changes, resulting in the variation of the aerodynamic parameters for the leeward ...
Chuan Wu +5 more
semanticscholar +3 more sources
Wind Tunnel Test Investigation on Unsteady Aerodynamic Coefficients of Iced 4-Bundle Conductors
Advances in Civil Engineering, 2019 Iced conductor motion is induced by the aerodynamic instability of these conductors. The unsteady aerodynamic characteristics are different from the steady aerodynamic characteristics.
M. Cai +3 more
semanticscholar +3 more sources
Advance in Civil Engineering, 2020 The partial differential galloping equation of iced quad conductors can be transformed into an ordinary differential galloping equation by two discrete methods: one is a direct discrete method and the other is an indirect discrete method.
Xiaohui Liu, G. Min, Chuan Wu, M. Cai
semanticscholar +1 more source
Advances in Mechanical Engineering, 2019 Ultra-high-voltage transmission line is prone to severely aeolian vibration, especially for the large crossing span. However, few studies were conducted previously, as a result of high nonlinearity and complexity of the bundled conductor aeolian ...
Y. Qi +4 more
semanticscholar +1 more source
IEEE Transactions on Power Delivery, 2021 The paper presents a modal model to describe the interaction between a 4-conductor bundle and wind. A finite-element model of the bundle is used to perform a linear analysis, to extract mode shapes and natural frequencies of the system. The motion of the
G. Diana, A. Manenti, S. Melzi
semanticscholar +1 more source