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为了辅助运行人员在冬季不同气象条件下对输电线路的覆冰危害进行定量分析,以及合理选择直流融冰电流和融冰时间,文章对架空线路的覆冰和融冰仿真软件进行了研究,提出了一种便于使用的考虑导线所处微地形环境和风向等综合因素的覆冰增长计算方法,并分析了覆冰仿真软件程序框图;利用载流导线的热平衡方程,选择导线最高允许运行温度为70℃,计算了导线的最大融冰电流并对计算误差进行了分析;利用覆冰导线表面冰融化时的热平衡方程,分析了覆冰导线融冰时间的计算方法,并分析了融冰仿真软件的程序框图。
In order to assist the operators to quantitatively analyze the icing damage of transmission lines under different meteorological conditions in winter and to select the DC ice melting current and the ice melting time reasonably, this paper studies the simulation software of icing and melting ice on overhead lines An easy-to-use calculation method of icing growth considering the integrated factors such as micro-topography and wind direction where the conductor is located, and the program block diagram of the icing simulation software are analyzed. By using the heat balance equation of the current-carrying conductor, the maximum allowable operating temperature 70 ℃, the maximum melting current of conductor was calculated and the calculation error was analyzed. The calculation method of ice melting time of icing conductor was analyzed based on the heat balance equation of icing conductor surface ice melting. The ice melting simulation software The block diagram.