Numerical Simulation Study on Galloping of Iced Quad Bundle Conductor

Yan Bo;Li Wen-yun;Zhou Song;Zhang Hong-yan

Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (9) : 102-107.

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PDF(1802 KB)
Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (9) : 102-107.
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Numerical Simulation Study on Galloping of Iced Quad Bundle Conductor

  • Yan Bo1;Li Wen-yun1;Zhou Song2;Zhang Hong-yan3
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Abstract

The dynamic system equation of iced quad bundle conductor is deduced out by means of the Hamilton variational principle. The constraint conditions of the clamp points of the sub-conductors connected by a spacer are introduced by the penalty function. The Newmark method is used in the time integration and the Newton-Raphson iteration is applied to solve the nonlinear equation. The presented method is justified by means of a numerical example. The effects of attack angle, wind speed and span length on the galloping of quad bundle conductor are numerically investigated based on the aerodynamic coefficients determined by wind tunnel experiments. It is demonstrated that the galloping amplitude is different if the difference of aerodynamic load on each sub-conductor is taken into account; the attack angle is a key factor for the occurrence of galloping phenomenon and the galloping amplitude increases with the wind speed and span length.

Key words

Quad bundle conductor / ice / galloping / penalty function method / numerical simulation

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Yan Bo;Li Wen-yun;Zhou Song;Zhang Hong-yan. Numerical Simulation Study on Galloping of Iced Quad Bundle Conductor[J]. Journal of Vibration and Shock, 2010, 29(9): 102-107
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