【摘要】 通过八分裂输电导线的结冰风洞试验,揭示了导线的覆冰过程与规律,温度、风速及空气中的含水量都是影响导线覆冰量的重要因素。针对两类不同冰型,系统地进行了八分裂导线和覆冰八分裂导线的气动力特性试验,给出了八分裂导线的三分力系数。分析了上游导线对流场的干扰和尾流的作用对导线气动力特性的影响。试验结果反映了八分裂覆冰导线的气动力特性规律,为覆冰导线的舞动研究提供了参考。更多还原

【Abstract】 By means of wind tunnel test for ice-covering transmission line adopting 8-bundled conductor,the ice-covering process and regularity of conductor are revealed,and test results show that the temperature,wind speed and moisture content in air are important factors impacting ice-covering of conductor.The aerodynamic characteristics tests of 8-bundled conductors with or without ice-coating are systemically conducted for two different types of ice,and the aerodynamic force coefficients of the 8-bundled conductor are given;the disturbance of conductor in advanced position to flow field and the influence of wake flow on aerodynamic characteristics of conductor are analyzed.Test results reflect the aerodynamic characteristic regulation of 8-bundled conductor,thus it is available for reference to the research on the galloping of ice-coated conductors.更多还原