不同覆冰状态下导线风致振动响应仿真  

Simulation of Conductor Wind-induced Vibration Response under Different Icing Conditions

作　　者：路国闯 李新梅[1] 商利 陈文杰 田鹿岩 陈霸 LU Guo-chuang;LI Xin-mei;SHANG Li;CHEN Wen-jie;TIAN Lu-yan;CHEN Ba(Department of Mechanical Engineering,Xinjiang University,Urumqi 830000,China)

机构地区：[1]新疆大学机械工程学院,乌鲁木齐830000

出　　处：《科学技术与工程》2023年第11期4677-4685,共9页Science Technology and Engineering

基　　金：国家自然科学基金(52161017,51865055)。

摘　　要：为研究动态风载作用下不同覆冰状态下输电导线的动力响应,利用谐波叠加法模拟多点相关的脉动风速时程曲线,得到不同覆冰形式下的风荷载,建立导线有限元模型,对不同覆冰状态下输电导线各特征参数和风速的相关性,并对导线振动特性以及动张力特性进行分析。结果表明:在随机风作用下,不均匀覆冰对风速的相关性最强;相同风速下,覆冰厚度和覆冰形式对导线振动特性影响不大;均匀覆冰时,导线张力峰值在15 mm覆冰时达到最大,张力峰值为69180.4 N;不均匀覆冰状态下,中央重覆冰对导线张力的影响强于两侧重覆冰。In order to study the dynamic response of transmission conductors with different ice-coating types under dynamic wind loads.The harmonic superposition method was used to simulate the time-history curve of muti-point correlation pulsating wind speed to obtain the wind load under different icing forms.The finite element model of the conductor was established.The correlation between characteristic parameters and wind speed of transmission wire and the vibration characteristics and dynamic tension characteristics of transmission wire were analyzed under different icing conditions.The results show that the uneven icing has the strongest correlation with the wind speed under the action of random wind.Under the same wind speed,the thickness and form of icing have little effect on the vibration characteristics of the conductor.When the wire is uniformly coated with ice,the peak tension reaches the maximum when the wire is coated with ice at 15 mm,and the peak tension is 69180.4 N.Under the condition of inhomogeneous icing,the influence of thick ice in the middle of the conductor tension is stronger than that of thick ice on both sides of the conductor.

关 键 词：输电线路 覆冰导线 风荷载 有限元 动力响应 

分 类 号：TM753[电气工程—电力系统及自动化]