分裂导线覆冰的数值分析与实验研究

Numerical analysis and experiment of icing condition of bundled conductors

建立分裂导线覆冰的计算模型,提出分裂导线覆冰的计算方法,并应用该模型和计算方法计算分裂导线覆冰的质量和形状,分析风向与两导线连线的夹角以及导线间距对覆冰的影响。通过模拟实验对本文提出的模型和计算方法进行实验验证。研究结果表明:对于横向水平风,当2根导线位于同一水平线时,迎风导线背部的遮蔽区导致背风导线的局部碰撞系数、覆冰质量和覆冰厚度均减小,但是随着导线间距增加,减小的程度不断降低,对背风导线覆冰的影响也越来越小。

A calculation model and its calculation method for ice accretion on bundled conductors were proposed.Using the calculation model and its calculation method,the mass and shape of ice accretion on bundled conductors were calculated.The influence of wind direction,the angle between two wires,and the distance between two wires on icing prediction were also calculated and analyzed.The proposed calculation model and its calculation method were verified by the experiment.The results show that for horizontal wind,when the two wires are also on a horizontal line,the shielding portion on the back of windward wire will cause the local collision coefficient,the ice mass and thickness of leeward wire decrease.However,as the spacing of two wires increases,the impact on leeward wire icing gets smaller and smaller.