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基于导线舞动的空气动力特性,依据流体动力学原理对覆冰导线绕流模型的流场进行了分析,得出不同风速、攻角下的空气动力系数,并探讨了风速、攻角等对舞动的影响。以索单元模拟输电导线,建立覆冰导线舞动的力学模型,采用Ansys软件对覆冰导线舞动进行模态分析,根据谐波叠加法研究了覆冰导线的风振响应,得出覆冰导线模型的前6阶振型并绘制导线对应振型的位移图,可为覆冰导线的优化设计提供依据。
Based on the aerodynamic characteristics of wire galloping, the flow field of ice-covered conductor around the flow model was analyzed based on the principle of hydrodynamics, and the aerodynamic coefficients under different wind speeds and angles of attack were obtained. The effects of wind speed, angle of attack, Impact. The mechanical model of the icing conductor is set up by simulating the transmission line with cable unit. The vibration of the icing conductor is analyzed by Ansys software. The wind-induced response of the icing conductor is studied according to the harmonic superposition method. The first six modes of vibration and the displacement of the corresponding vibration mode of the conductor are plotted, which can provide the basis for the optimal design of the iced conductor.