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Cai M.-Q.,Chongqing University | Yan B.,Chongqing University | Lu X.,Chongqing University | Zhou L.-S.,Chongqing University | And 2 more authors.
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2013

Numerical model for fluid flow around a typical iced quad bundle conductor was set up, and the aerodynamic coefficients varying with the wind attack angle of conductor were numerically investigated by means of FLUENT software. The Den Hartog and Nigol coefficients determined by numerical simulation are in agreement with those obtained by the wind tunnel test. Moreover, the galloping of iced quad bundle conductor lines based on aerodynamic coefficients obtained by numerical simulation and wind tunnel test were simulated respectively by ABAQUS software. The galloping characteristics of the transmission lines based on aerodynamic coefficients deduced by calculation and test are in coincidence, which demonstrates the availability of applying the numerical simulation method to obtain aerodynamic coefficients of iced conductors in the analysis of galloping of transmission lines. Source


Cui W.,Chongqing University | Yan B.,Chongqing University | Yang X.-H.,Henan Electrical Power Test Institute | Yang X.-H.,Shanghai JiaoTong University | LU Z.-B.,Henan Electrical Power Test Institute
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2014

Finite element models of three-phase transmission lines with triangular and vertical conductor arrangement were set up, and the anti-galloping efficiency of the interphase spacers mounted on the transmission lines was numerically investigated by means of the ABAQUS software. Galloping responses of the transmission lines in steady wind field and stochastic wind field were simulated, and the necessity to take the stochastic wind field into account in these analyses was illustrated through the comparison of dynamic responses of transmission lines in the two kinds of wind fields. The anti-galloping efficiency of the inperphase spacers on the transmission line with triangular and vertical conductor arrangement was analyzed based on the numerical simulation results. Source


Yang X.-H.,Henan Electrical Power Test Institute | Yang X.-H.,Shanghai JiaoTong University | Lu X.-G.,Chongqing University | Yan B.,Chongqing University | Zhang B.,Henan Electrical Power Test Institute
Jisuan Lixue Xuebao/Chinese Journal of Computational Mechanics | Year: 2013

Galloping of iced six bundle conductors in the test transmission line is numerically simulated by means of the finite element software ABAQUS, and the results are compared with those observed in the field test. The finite element model of the double pendulum damper is set up and the dynamic response of the transmission line with double pendulum dampers is simulated. It is shown that little anti-galloping efficiency is obtained after installation of the double pendulum dampers, which is consistent with the observed result from the field test. Further study reflects that good anti-galloping efficiency can be arrived through the parameter modification of the double pendulum dampers. Source


Zhou L.-S.,Chongqing University | Yan B.,Chongqing University | Yang X.-H.,Henan Electrical Power Test Institute | Yang X.-H.,Shanghai JiaoTong University | Lu Z.-B.,Henan Electrical Power Test Institute
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2014

The tower-line coupled finite element model of a transmission test line was set up by means of ABAQUS software. Galloping of six-bundle conductors with D-shaped ice model in the line was numerically simulated, the dynamic displacement responses, galloping orbits, galloping modes and frequencies were obtained. The numerical simulation results were consistent with those measured on the transmission test line, they verifies the correctness of the numerical model and the simulation method. The established finite element model and the numerical method could be employed to investigate galloping behaviors and assess anti-galloping techniques. Source


Yan D.,Henan Electrical Power Test Institute | Cai M.-Q.,Chongqing University | Chen R.,Henan Electrical Power Test Institute | Yan B.,Chongqing University
Jisuan Lixue Xuebao/Chinese Journal of Computational Mechanics | Year: 2013

The turbulent flow around a typical iced six bundled conductor with D-shape accretion are numerically investigated by means of FLUENT software, and the aerodynamic coefficients varying with wind attack angle are obtained. The influence of the flow of the windward sub-conductors on that of the leeward sub-conductors is analyzed. It is shown that the aerodynamic coefficients of various sub-conductors are different from each other, and it is necessary to take into account the difference of the aerodynamic coefficients of each sub-conductor in the investigation of galloping and anti-galloping technique of iced transmission lines. Source

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