Results 211 to 220 of about 208,722 (254)

Proposed Friction Damper for Galloping Conductor Waves

IEEE Transactions on Power Apparatus and Systems, 1967
The standing wave effects of galloping conductor motion are analyzed in terms of parameters which may be evaluated in accordance with traditional procedures for dealing with analogous steady-state and transient phenomena in elementary electrical circuits.
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Galloping Conductors

2009
The chapter describes galloping of overhead conductors. It includes an overview on the phenomenon, with information on its characteristics, types of galloping, damage resulting from it, and causes. The chapter also covers the mechanisms of galloping and reviews protection methods.
Lilien, Jean-Louis, Havard, Dave, Van Dyke, Pierre   +2 more
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Numerical Analysis for Galloping of Iced Quad Bundle Conductors

Applied Mechanics and Materials, 2012
In order to attain the purpose of anti-galloping, a simplified model for iced quad bundle conductors of three degrees of freedom in vertical, horizontal and torsional directions is established by means of the Hamilton principle, in which the effect of spacers stiffness and damping is considered.
Jun Yan Cai, Xi Jun Liu, Su Xia Zhang
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Numerical Simulation of Galloping for Iced Quad-Bundled Conductor

Advanced Materials Research, 2014
The theoretical study of galloping can effectively promote anti-galloping techniques. Cable element is utilized to imitate the bundled conductor, and beam elements are used to simulated the spacers, established galloping finite element analysis model which can consider sub-conductors wake interference.
Jun Jie Shi, Ya Nan Li, Li Qin
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Galloping analysis of stranded electricity conductors in skew winds

Wind and Structures, 2008
When first commissioned, the 1.6 km span 275kV Severn Crossing Conductor experienced large amplitude vibrations in certain wind conditions, but without ice or rain, leading to flashover between the conductor phases. Wind tunnel tests undertaken at the time identified a major factor was the lift generated in the critical Reynolds number range in skew ...
Macdonald, JHG, Griffiths, PJ, Curry, BP
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Nonlinear numerical simulation method for galloping of iced conductor

Applied Mathematics and Mechanics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liu, Xiao-hui, Yan, Bo, Zhang, Hong-yan, Zhou, Song   +3 more
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Investigation into galloping characteristics of iced quad bundle conductors

Journal of Vibration and Control, 2014
A nonlinear finite element method for galloping of iced bundle conductor transmission lines is presented. Wind tunnel tests for galloping of quad bundle conductor segments with crescent-shaped and sector-shaped ice models were carried out, and validity of the finite element method is demonstrated by the consistency of the galloping responses ...
Bo Yan, Xiaohui Liu, Xin Lv, Linshu Zhou
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Theoretical and Numerical Analysis of Galloping of Bundle Conductors

2011 Asia-Pacific Power and Energy Engineering Conference, 2011
A 2 DOF model with the coupling of vertical and torsional motions is considered to study galloping of bundle conductors in this paper. By using the averaging method and the Routh-Hurwitz criteria, the motion equations are solved to discuss the stability of the trivial solution and find the influence of system parameters such as ice thickness, initial ...
Huabiao Zhang, Xinye Li, Lijuan Zhang, Lijuan He   +3 more
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Research on Numerical Simulation of Quad Bundle Conductor on Galloping

Applied Mechanics and Materials, 2013
The models of the multi-bundled conductors are constructed by finite element method in this paper. The numerical results are given by using the 4th order Runge-Kutta method considering aerodynamic parameter of sub-conductor. The simulation results are obtained on galloping of quad bundle conductors with the different span. Thus some effective numerical
Xue Ping Zhan, Kuan Jun Zhu, Cao Lan Liu, Bin Liu, Jun Zhang, Guang Rui Tang   +5 more
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Mechanical Characteristics of Ice-melting and Ice-shedding under Conductor Galloping

IEEE International Conference on Power System Technology, 2021
Ruihai Li, Weizhuo Chen, Weiwen Huang, Chuying Shen, Xiu Yan, Fanghui Yin   +5 more
semanticscholar   +1 more source