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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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An Online Monitoring Device for Twist Angle of Iced Single Conductor of Transmission Line
IEEE Sensors JournalThe real-time and accurate measurement of the twist angle of the overhead conductor during the icing period of the transmission line is of great significance to the monitoring and early warning of the icing state of the power grid. In order to obtain the
Ran Li +5 more
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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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Effects of Ice Thickness on the Aerodynamic Characteristics of Crescent Shape Iced Conductors
Applied Mechanics and Materials, 2012Aerodynamic characteristics of iced conductors were investigated by the wind tunnel test. Under the homogeneous turbulence of 5% intensity, aerodynamic force coefficients of single and bundled conductors were obtained at wind angles of 0°~180°. The variation patterns of aerodynamic forces on the iced conductors with respect to wind angels of attack ...
Dong Yan +3 more
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Comparative Analysis of Dynamic Characteristics under Two Iced Conductor Galloping Models
Applied Mechanics and Materials, 2011X. Liu +4 more
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Impact of icing severity on corona performance of glaze ice-covered conductor
IEEE Transactions on Dielectrics and Electrical Insulation, 2017This paper presents the results of laboratory experiments carried out on an ac-energized stranded conductor subjected to simulated glaze icing, which were conducted in a corona cage located in an artificial climate chamber. With the increase of icing duration, the grow of icing severity of conductors lead to the corona onset voltage fell from 54.8 to ...
Gaohui He +7 more
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The effect of conductor diameter upon the thickness of icing
2016 17th International Scientific Conference on Electric Power Engineering (EPE), 2016Due to the recent situation in the neighbouring countries, where icing damaged many transmission and distribution power lines and caused financial losses, it is necessary to operate weather stations. Last icing events caught the overhead power line operators unprepared because they occurred in locations where the design did not expect any icing.
Frantisek Janicek +3 more
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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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Temperature characteristic of DC ice-melting conductor
Cold Regions Science and Technology, 2011China is developing DC ice-melting method for the de-icing of overhead transmission lines after the ice storm in 2008. Melting ice apart, the Joule heat produced by DC heats the conductor. It is significant to investigate the temperature characteristic of the ice-melting conductors in order to protect the conductor from being damaged by overheating ...
Songhai Fan +4 more
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Influence of turbulence on the galloping instability of iced conductors
IEEE Transactions on Power Apparatus and Systems, 1975Previously reported wind tunnel dynamic tests on spring-supported models of transmission line conductors with crescent-shaped accumulations of ice, showed that the galloping instability of these models was significantly affected by turbulence in the air flow.
J. Chadha, W. Jaster
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