架空输电线路覆冰全过程预测方法研究及应用  

Research and Application of Ice Accretion Prediction Methods for Overhead Transmission Lines

作　　者：刘杰 LIU Jie(State Grid Hebei Electric Power Research Institute,Hebei Shijiazhuang 050021,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,河北石家庄050021

出　　处：《农村电气化》2025年第4期46-49,共4页Rural Electrification

摘　　要：为探究输电线路覆冰增长机制及其影响因素,文章采用计算流体力学,建立了覆冰增长全过程预测模型。基于欧拉-拉格朗日模型,分析了不同风速下空气流场特性、过冷水滴运动轨迹及其与导线的碰撞规律,并通过实例模拟覆冰外形随时间的演变过程。随时间推移,覆冰外形逐渐椭圆化并形成尖端效应,进一步影响水滴的碰撞率特性和覆冰形状,文章提出的覆冰增长动态模型为输电线路覆冰灾害预测及防护提供了理论支持。To investigate the mechanisms and influencing factors of ice accretion on transmission lines,computational fluid dynamics is employed to establish a full-process prediction model for ice accretion.Based on the Euler-Lagrange model,the air flow characteristics,motion trajectories of supercooled water droplets,and their collision patterns with conductors under varying wind speeds are analyzed.Simulations of practical cases demonstrate the evolution of ice morphology over time.As ice accretion progresses,the ice layer gradually adopts an elliptical shape and develops an aerodynamic tip effect,which subsequently alters droplet collision rates and further modifies ice morphology.The proposed dynamic model provides a theoretical foundation for predicting and mitigating ice-related hazards on transmission lines.

关 键 词：输电线路 覆冰增长 数值模拟 

分 类 号：TM752[电气工程—电力系统及自动化]