Results 201 to 210 of about 208,722 (254)
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Parameter Study on Galloping of Iced Bundled Conductors
2010 Asia-Pacific Power and Energy Engineering Conference, 2010The aerodynamic coefficients of iced quad-bundled conductor varying with attack angle determined by wind tunnel test are presented. A cable element with torsional degree-of-degree used to simulate the iced conductor is obtained in ABAQUS software by releasing the two bending degrees-of-freedom and setting the material to be incompressible.
Jing Hu +5 more
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Effects of Icing and Galloping on the Insulation Performance of 10 kV Overhead Insulated Conductor
IEEE International Conference on DielectricsIcing and galloping caused by extreme weather may lead to the damage and conductor breakage of 10 kV overhead insulated conductors. In this paper, the forces on the insulation layer of overhead insulated conductors in the process of galloping are ...
Hucheng Liang +7 more
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Galloping of Lightly Iced Conductors: An Explanation
Dynamics, Acoustics and Simulations, 1998Abstract Stability of a stranded, sagged, lightly iced electrical power transmission cable subjected to aerodynamic forces and moment is studied. Small oscillations in three Cartesian directions about wind loaded equilibrium position and torsional oscillations are considered.
S. H. Venkatasubramanian +3 more
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Effect of temperature on galloping of iced conductors
Advances in Structural Engineering, 2017This article investigates the effect of temperature on galloping of iced conductors, accounting for the influence of sagging and geometric nonlinearity. By extending Irvine’s cable theory to thermo-elasticity problems, an analytical model is proposed to evaluate the effect of thermal stress on galloping of transmission lines.
Guo Li, Li Li
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Study on wind tunnel test and galloping of iced quad bundle conductor
Cold Regions Science and Technology, 2019Conductor galloping is a common phenomenon during the operation of the transmission line, which can easily result in electrical and mechanical accidents such as tower collapses and interphase flashover. And aerodynamic parameters are key factors to study
L. Jiazheng +6 more
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Galloping response of sector-shape iced eight bundle conductors
Canadian Journal of Civil Engineering, 2020Wind tunnel test results of the aerodynamic coefficients of sector-shape iced eight bundle conductors varying with wind attack angles are presented. Then, by means of the user-defined cable elements, the aerodynamic loads are applied on the cable elements of each sub-conductor through the finite element method (FEM).
Cai, Meng-qi +4 more
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Galloping Characteristics of Conductor Accreted with Crescent-Shaped Ice
Applied Mechanics and Materials, 2012Accounting for the disastrous phenomena of ice-accreted conductor galloping, wind tunnel tests of LGJ630/45 conductor accreted with crescent-shaped ice are conducted. Based on the test results, conductor galloping is simulated by employing the PCL language of ANSYS commercial software package and then the influences of span lengths as well as free ...
Hui Xue Dang +3 more
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Some Effects of Conductor Twisting on Galloping
IEEE Transactions on Power Apparatus and Systems, 1980This paper considers some simplified and approximate approaches to the effects of torsional rotation or twist on the dynamic instability of conductors. The conductor is considered in the classical sense as a beam rod having uniform torsion stiffness all along its length, and a uniform aerodynamic profile shape initially resulting from an accumulation ...
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Galloping Conductors and a Method for Studying Them
Transactions of the American Institute of Electrical Engineers, 1947This paper presents results of a study of the large amplitude oscillations of aerial conductors called galloping. The work was undertaken in an attempt to evaluate the possibility of mitigating the damage caused by these disturbances. A full scale experimental line is described which is so constructed that, without ice formation, it will gallop ...
E. L. Tornquist, C. Becker
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Numerical Investigation on Galloping of Iced Quad Bundle Conductors
IEEE Transactions on Power Delivery, 2012The aerodynamic coefficients of each subconductor in an iced quad bundle conductor covered with crescent-shaped and sector-shaped cross-sections were determined by the wind tunnel test. A cable element with torsional degree of freedom used to simulate the iced conductor is obtained in ABAQUS software by releasing the two bending degrees of freedom and ...
Jing Hu +3 more
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