不同直径下导线覆冰增长特性

发布时间：2018-06-06 05:32

本文选题：不同直径导线 + 覆冰试验　；参考：《高电压技术》2014年02期

【摘要】：为研究导线覆冰湿增长与覆冰参数之间的关系,确定导线覆冰厚度的增长特性,在人工气候室内,对不同直径导线进行了覆冰试验研究。通过控制覆冰试验条件,得到大量不同直径导线覆冰厚度增长的试验数据,对试验数据进行对比分析,得到导线覆冰增长特性,并采用MATLAB覆冰预测仿真程序进行验证。分析了温度、风速、时间等因素对不同直径导线覆冰增长特性的影响。试验结果表明:不同直径导线覆冰厚度初始时刻增长较快,随着时间延长覆冰厚度呈现饱和趋势,且导线初始直径越小,增长量越大;在湿增长情况下,导线覆冰厚度与温度成反比;通过纵向对比试验数据和模型仿真发现,风速存在临界值使得导线达到最大覆冰增长速度,并且温度越低,临界风速值越大;存在导线覆冰最大直径。
[Abstract]:In order to study the relationship between the wet growth of conductors and icing parameters and determine the growth characteristics of the ice thickness of conductors, an experimental study was carried out on different diameter conductors in an artificial climate chamber. By controlling the icing test conditions, a large number of experimental data of the ice thickness increase of different diameter conductors are obtained. The experimental data are compared and analyzed, and the characteristics of the ice coating growth of the conductors are obtained, which are verified by the simulation program of MATLAB icing prediction. The effects of temperature, wind speed and time on the ice growth characteristics of wire with different diameters are analyzed. The experimental results show that the ice thickness of wire with different diameters increases rapidly at the initial time, and the thickness of the conductor is saturated with the prolongation of time, and the smaller the initial diameter of the conductor is, the larger the increase is, and in the case of wet growth, The thickness of conductor icing is inversely proportional to the temperature, and through longitudinal comparison test data and model simulation, it is found that the existence of critical value of wind speed makes the conductor reach the maximum speed of ice growth, and the lower the temperature, the greater the critical wind speed. There is a maximum diameter of conductor icing.
【作者单位】：东南大学电气工程学院;
【分类号】：TM752.5

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