Results 181 to 190 of about 208,722 (254)
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Effectiveness of a Roller Damper in Suppressing Conductor Galloping
International Applied Mechanics, 2016A new method to suppress conductor galloping with a roller damper as a component of a vibration isolation system is proposed. The dynamic behavior of the system is mathematically modeled taking into account the turn of the system together with damper due to the vertical deviation of the insulator set.
V. Legeza
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Energy harvesting from iced-conductor inspired wake galloping
Extreme Mechanics Letters, 2020Abstract Energy harvesting from wake galloping of crescent-shape and D-shape cross-section bluff bodies inspired by galloping of iced conductors is investigated. Analytical models are derived in the framework of electromechanical extension of the Hamilton’s principle, Euler–Bernoulli beam assumption and quasi-steady hypothesis.
Zhimiao Yan +5 more
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Conductor Galloping Detection on Imbalanced Dataset: SVM with Smart Sampling
2020 IEEE Power & Energy Society General Meeting (PESGM), 2020Conductor galloping is the high-amplitude, low-frequency oscillation of overhead power lines due to wind. Such movements may lead to severe damages to transmission lines, and hence pose significant risks to the power system operation. In this paper, we target to design a detection framework for conductor galloping. The difficulty comes from limited and
Kui Wang, Jian Sun, Chenye Wu, Yang Yu
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2022 IEEE 4th International Conference on Civil Aviation Safety and Information Technology (ICCASIT), 2022
The phenomenon of ice-covered transmission conductors that often gallop under wind loads and can be a great threat to the national economy. And in consideration of the impact of multi-degree of freedom coupling of ice-covered multi-split conductor gallop
Ying Lan +3 more
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The phenomenon of ice-covered transmission conductors that often gallop under wind loads and can be a great threat to the national economy. And in consideration of the impact of multi-degree of freedom coupling of ice-covered multi-split conductor gallop
Ying Lan +3 more
semanticscholar +1 more source
Analysis of Galloping Amplitude of Iced Conductor with Three-Degree of Freedom
2023 5th Asia Energy and Electrical Engineering Symposium (AEEES), 2023The galloping of ice-covered transmission lines will cause conductor strand breakage and phase-to-phase flashover, even serious safety accidents such as tower toppling.
Xu Yu, Xiao Hui Liu, Jing-feng Sun
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Advances in Structural Engineering, 2022
Based on the nonlinear strain-displacement relationship of spatial curved beam theory, a finite element model for galloping analysis of iced transmission lines is established, which involves three translational degrees of freedom (DOF) and one rotational
Yan Han +4 more
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Based on the nonlinear strain-displacement relationship of spatial curved beam theory, a finite element model for galloping analysis of iced transmission lines is established, which involves three translational degrees of freedom (DOF) and one rotational
Yan Han +4 more
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Journal of Sound and Vibration, 2000
A useful design tool is developed for a bundle conductor of an electrical transmission line by using a three-degree-of-freedom hybrid model. The model is adaptable because it incorporates numerical mode shapes determined by numerically employing the finite element technique to form relevant matrices.
Q. ZHANG, N. POPPLEWELL, A.H. SHAH
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A useful design tool is developed for a bundle conductor of an electrical transmission line by using a three-degree-of-freedom hybrid model. The model is adaptable because it incorporates numerical mode shapes determined by numerically employing the finite element technique to form relevant matrices.
Q. ZHANG, N. POPPLEWELL, A.H. SHAH
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Effect of conductor geometry on bundle conductor galloping
Electric Power Systems Research, 1978Abstract A computer simulation of an elastic catenary was used to study the wake-induced galloping of a two-conductor bundle transmission line. It was shown that increasing the conductor separation reduces the region of galloping instability and decreases the amplitude of the resulting galloping.
Kenneth E. Gawronski, Roger J. Hawks
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Modelling And Boundary Control Of Conductor Galloping
Journal of Sound and Vibration, 1993Abstract A distributed parameter model for wind induced "galloping" of overhead electric power lines is investigated. The partial differential equation obtained is a non-linear wave equation and numerical solutions are obtained using the method of characteristics.
Wang, H., Elcrat, A. R., Egbert, R. I.
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Conductor Galloping-Part II Torsional Mechanism
IEEE Transactions on Power Apparatus and Systems, 1981A detailed aerodynamic wind tunnel study on conductors with natural ice shapes shows that, over a practical range of ice conditions and wind speeds, conductor galloping on overhead lines is caused largely by the self-excited torsional mechanism.
O. Nigol, P. Buchan
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