A numerical simulation on wake-induced oscillation of twin bundle conductor lines
HE Xiaobao1,YAN Bo1,2 ,WU Chuan1,ZHANG Bo3,4,YANG Xiaohui3,4
1.College of Aerospace Engineering,Chongqing University,Chongqing 400044,China;
2.State Key Laboratory of Transmission & Distribution Equipment and Power System Safety and New Technology,Chongqing University,Chongqing 400044,China;
3. Henan Electric Power Research Institute,Zhengzhou 450052，China;
4. Key Laboratory of Galloping Simulation Technology of Transmission Line,State Grid Corporation ,Zhengzhou 450052,China
Lift coefficient and drag coefficient of leeward conductors varying with relative position of upwind conductors were simulated by fluid dynamics software Fluent. The wake-induced oscillation of typical twin bundle conductor lines were numerically simulated by ABAQUS software. The moving traces,vibration amplitude and frequency characteristics of sub-conductors were obtained. It is shown that the displacement phases of the two sub-conductors are opposite,and the moving traces are approximated as a horizontal ellipse. The simulation results are consistent with the field observation results. Finally,the characteristics of wake-induced oscillation of the twin bundle conductor line with equally and unequally installed spacers are compared.
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