Finite element modelling of transmission line galloping

Desai, Yogesh M.; Yu, Pei; Popplewell, N.; Shah, A. H.

doi:10.1016/0045-7949(94)00630-l

Cited by 135 publications

(82 citation statements)

References 15 publications

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“…Actually, the continuous characteristics of multispan conductor are extremely important and should not be ignored. In view of this, Desai et al [13] described the galloping behavior of the multispan iced transmission line by the finite element method, in which the three-node isoparametric cable element included torsional and three translational degrees of freedom at each node. Since then, the finite element method has been widely used in the galloping research.…”

Section: Shock and Vibrationmentioning

confidence: 99%

“…Since then, the finite element method has been widely used in the galloping research. Based on the work mentioned in [13], Desai et al [14] developed an efficient perturbation method to calculate the galloping vibration of the multispan overhead transmission line. Zhang el al.…”

Section: Shock and Vibrationmentioning

confidence: 99%

“…Considering that the main range of galloping frequency is [0.1 (Hz), 3 (Hz)] [13], the modal truncation order of the ten-span catenary is set to 20 in this paper. The Runge-Kutta method is used to calculate the dynamic response of iced catenary system numerically.…”

Section: Effect Of Initial Icing Anglementioning

confidence: 99%

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Study on Galloping Oscillation of Iced Catenary System under Cross Winds

Guo

Yang

2017

Shock and Vibration

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This paper mainly aims at revealing the nature of the galloping oscillation of iced catenary system under cross winds. The aerodynamic force on the iced catenary system is assumed to be quasi-steady, and then the quasi-steady aerodynamic lift and drag coefficients are completed in FLUENT. By fitting the discrete simulation data, the expression of the vertical aerodynamic force is further obtained. According to the Den Hartog vertical galloping mechanism, the stability of iced catenary is discussed and the initial icing angle corresponding to the critical stability is obtained. On this basis, the dynamic model of the simple iced catenary system under cross winds is established. The partial differential vibration equation of the system is converted into the ordinary differential equation by the Galerkin method and then numerically solved. The condition of the unstable catenary motion in simulation is in agreement with that from theoretical stability analysis. In addition, the effects of structural damping, initial icing angle, and wind velocity on the system responses are investigated.

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Section: Shock and Vibrationmentioning

confidence: 99%

Section: Shock and Vibrationmentioning

confidence: 99%

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Study on Galloping Oscillation of Iced Catenary System under Cross Winds

Guo

Yang

2017

Shock and Vibration

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“…Calculation of the galloping characteristics of the conductor with finite element method is an effective analysis technology [10,11] . This paper realizes analysis on galloping characteristic of the conductor with 6×1520 mm 2 large cross section conductor with the non-linear finite element instantaneous dynamic method.…”

Section: Analysis Modelmentioning

confidence: 99%

“…Iced conductor galloping is one of typical structural selfexcitation vibration phenomenon, including strong nonlinearity, and galloping influence factors are complicated [4][5][6][7][8][9] . The concrete pertinent research works shall be developed according to the concrete line engineering conditions, meteorological and geographic conditions, and effective antigalloping measures shall be developed to ensure safe and stable operation of the line.…”

Section: Introductionmentioning

confidence: 99%

Untitled

Liu¹,

Zhu²,

Liu³

et al. 2015

Proceedings of the 2015 International Conference on Sustainable Energy and Environmental Engineering

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Abstract-The anti-galloping method was proposed for the 6×1520 mm2 large cross section conductor. The galloping model was established by using nonlinear finite element method and considering geometric nonlinear, aerodynamic nonlinear and initial deformation. The galloping characteristics and the critical conditions to excite galloping were obtained for the large cross section conductor. And the anti-galloping effect was also evaluated by using the rotary clamp spacers. The results show that the multi-bundled conductors are more vulnerable to the galloping phenomenon than the single conductors under the same ice and wind conditions. And the galloping characteristics obtained by 1520 mm2 large cross section conductor are basically the same with other cross section conductors. The anti-galloping effect can meet the requirement by using rotary clamp spacer for the 6×1520 mm2 large cross section conductor in the easy galloping areas. And even in the harshest ice and wind conditions, the galloping amplitude can be reduced in the largest extent and the time to excite galloping can be greatly extended.

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A robust and efficient numerical finite element method for cables

Bertrand

Acary

Lamarque

et al. 2020

Numerical Meth Engineering

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Numerical simulation of cable systems remain delicate due to their geometrical non-linearity and also to their intrinsic unilateral constitutive law. Indeed Finite Element approaches (if not implemented carefully) fail to predict accurate equilibrium for cable structures. The major issue to be addressed is the ill-conditioning, starting configuration and wrong choice of descent direction during iterative methods. An iterative scheme based on Finite Element Method is presented to overcome this issue, even with large number of elements.

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Finite element modelling of transmission line galloping

Cited by 135 publications

References 15 publications

Study on Galloping Oscillation of Iced Catenary System under Cross Winds

Study on Galloping Oscillation of Iced Catenary System under Cross Winds

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A robust and efficient numerical finite element method for cables

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