电网技术2024，Vol.48Issue(4)：1779-1786,中插95,9.DOI:10.13335/j.1000-3673.pst.2023.1622
强风作用下输电线路的脱冰响应研究
Research of Ice-shedding Response of Transmission Lines Under Strong Winds
摘要
Abstract
Under strong wind,the ice-shedding process of transmission lines will produce impact effects and shorten the distance between phases,greatly increasing the possibility of electrical accidents.Based on the actual parameters of a local section of a line in Xinjiang,this paper establishes a finite element model of the ice-shedding response of a"conductor-insulator"under the action of strong winds.It analyses the displacement,unbalanced dynamic tension,and minimum distance between phases of the ice-shedding profile of transmission lines under different wind speeds and wind angles of attack.The results show that the wind angle of attack on the aerodynamic coefficient and wind load increase coefficient of the shaped ice-covered conductor has a significant effect;the dynamic tension amplitude under strong wind conditions has more than the design tensile strength,there is the possibility of wire breakage;the ice-shedding process of transmission line under strong wind is an upward skewed displacement process compared with its initial configuration position,and there is a significant decrease in the inter-phase distance.The probability of the risk of discharging is far more than that of the no wind ice-shedding condition.The probability of discharge risk during operation is much higher than that of the ice-shedding condition without wind.In this paper,the study of transmission lines under strong winds is carried out to investigate the characteristics of the ice-shedding response under complex conditions and the risk of discharge during operation to provide a certain reference for emergency anti-icing and ice-shedding technology of transmission lines under strong winds.关键词
输电线路/强风/脱冰/动张力/最小相间距离Key words
transmission lines/strong winds/ice-shedd ing/dynamic tension/minimum phase distance分类
信息技术与安全科学引用本文复制引用
朱永灿,谢松林,董新胜,舒新,王帅,张怡然..强风作用下输电线路的脱冰响应研究[J].电网技术,2024,48(4):1779-1786,中插95,9.基金项目
国网新疆电力有限公司科研项目(编号5230DK230008) （编号5230DK230008）
陕西省创新人才推进计划-青年科技新星项目(2022KJXX-41) （2022KJXX-41）
陕西省秦创原科研队伍建设项目(2023KXJ-115)Project Supported by:Science and Technology of the State Grid Xinjiang Electric Power Co.,Ltd.(No.5230DK230008) （2023KXJ-115）
Shaanxi Province Innovative Talent Promotion Plan-young Science and Technology Rising Star Project(2022KJXX-41) （2022KJXX-41）
Shaanxi Qin Chuang Yuan Scientific Research Team Construction Project(2023KXJ-115). （2023KXJ-115）
