防冰临界电流的研究与仿真

为输电线路防冰技术及实验室模拟导线覆冰和防冰研究提供理论参考,对导线表面覆冰过程中的热平衡过程进行了研究,并提出和分析了目前影响临界电流不足的因素.通过仿真实验,得出了覆冰条件下,环境温度、风速和空气含湿量与临界电流之间的关系.结果表明,当风速达到一定值时,液滴收集系数,撞击动能及空气动力热能的综合影响使临界电流仿真计算值小于文献值.

Research and Simulation on Anti-icing Critical Current

To supply a theoretical reference for the anti-icing technology of electrical transmission line,icing and anti-icing research of conductors in a laboratory,the process of heat balance during the icing process on the surface of a conductor is studied. The disadvantages of the present critical current technology are mentioned and analyzed.The relationships between the critical current and the ambient temperature,the wind velocity and the moisture content are gained by simulation experiments.Under certain wind velocity,the simulation value of critical current is lower than the literature by influence of liquid-drop collecting coefficient, impinging kinetic energy and aerodynamic heating energy.