CAJ | 학술논문

输电线路覆冰后，将引发断线倒塔事故，严重威胁电网的安全运行。其覆冰受气温、风速、水滴直径和导线结构的影响，为研究这些因素影响导线覆冰的规律，在导线覆冰理论计算研究的基础上，利用有限元软件二次开发功能，编制了导线覆冰过程中过冷却水滴碰撞导线的数值模型，该模型将反馈的两随机水滴位置插值到网格节点上，最终获得过冷却水滴局部碰撞位置，实现对导线覆冰过程的模拟。通过对不同覆冰影响因素的计算，总结了覆冰强度、局部碰撞率与气温、风速、水滴直径之间的相互关系。最后进行了导线覆冰模拟试验，试验结果与数值计算结果吻合较好，表明模型正确有效，可用于导线覆冰的预测。
수전선로복빙후，장인발단선도탑사고，엄중위협전망적안전운행。기복빙수기온、풍속、수적직경화도선결구적영향，위연구저사인소영향도선복빙적규률，재도선복빙이론계산연구적기출상，이용유한원연건이차개발공능，편제료도선복빙과정중과냉각수적팽당도선적수치모형，해모형장반궤적량수궤수적위치삽치도망격절점상，최종획득과냉각수적국부팽당위치，실현대도선복빙과정적모의。통과대불동복빙영향인소적계산，총결료복빙강도、국부팽당솔여기온、풍속、수적직경지간적상호관계。최후진행료도선복빙모의시험，시험결과여수치계산결과문합교호，표명모형정학유효，가용우도선복빙적예측。
Relevanting to meteorology, thermodynamic, heat transfer theory and fluid mechanics and being regarded as the process of natural stochastic phase transition, the accreted ice is dominated by the environmental temperature, wind velocity, water-droplets diameters and conductor structure. So as to study the influence rules of these factors mentioned and to achieve the real effect-simulating of accreted ice on conductor, the algorithm simulation module of the process of perpendicular collision of super-cooled water droplets with the conductor under the airflow is developed on the basis of theoretical researches. The simulation studies on accreted ice on conductor under different conditions such as temperature, wind velocity, water droplets diameters are carried out and the conclusions of the relationship between ice intensity, local collision efficiency and the factors are drawn. Then some experiments are taken in phytotron to verify the feasibility of the calculation algorithm. From the experimental studies’ results in artificial climate room for the focus of ice intensity, the solution of numerical model agrees favorably with experimental results and can be adopted for the ice prediction.