输电线路覆冰脱冰跳跃抑制措施的仿真研究  

A Simulation Study on Ice Shedding Bouncing Suppression Measures for Transmission Lines

作　　者：董新胜 马树阳 王帅 赵蓂冠 李孟 朱永灿[2] DONG Xinsheng;MA Shuyang;WANG Shui;ZHAO Mingguan;LI Meng;ZHU Yongcan(Electric Power Science Research Institute of State Grid Xinjiang Electric Power Company,Urumqi 830011,Xinjiang,China;School of Electronics and Information,Xi'an Polytechnic University,Xi'an 710048,Shaanxi,China)

机构地区：[1]国网新疆电力有限公司电力科学研究院,新疆乌鲁木齐830011 [2]西安工程大学电子信息学院,陕西西安710048

出　　处：《电网与清洁能源》2024年第10期24-30,39,共8页Power System and Clean Energy

基　　金：国网新疆电力有限公司科研项目资助(5230DK230008)。

摘　　要：覆冰脱落可导致架空线纵向弹跳和动态张力增加,对电力系统的稳定性和安全性构成极大的威胁。首先建立输电导线有限元模型,并通过力学等效进行牵引力及相间间隔棒施加,进而通过数值模拟的方法探究各因素下输电线脱落弹跳抑制措施的效果。结果表明,施加牵引力对导线的弹跳位移和幅值的影响并不显著,不恰当的施加位置反而可能增大闪络风险。加装相间间隔棒对于脱冰弹跳抑制效果明显,其中在导线档中附近加装间隔棒效果最优。强风会导致覆冰导线伴随明显的横向位移,导致更高的闪络风险,而施加间隔棒对导线的横向、纵向位移都有明显的抑制效果,避免闪络事故的发生。The shedding of ice from overhead power lines can cause longitudinal bouncing and increase dynamic tension,posing a significant threat to the stability and safety of the power system.This article first establishes a finite element model of transmission lines and applies traction forces and inter-phase spacer rods through mechanical equivalence.The effects of various factors on the suppression of line shedding are then explored through numerical simulations.The results show that the influence of traction forces on the displacement and amplitude of the line's bouncing is not significant,and the inappropriate application position can even increase the risk of flashovers.The installation of inter-phase spacer rods has a significant effect on the suppression of bouncing,with the best results achieved when the rods are installed near the line attachment points.Strong winds can cause significant lateral displacement of ice-covered lines,leading to a higher risk of flashovers.However,the application of spacer rods has a noticeable inhibitory effect on both the lateral and longitudinal displacement of the lines,preventing flashover accidents from occurring.

关 键 词：输电线路 脱冰弹跳 牵引力 间隔棒 强风脱冰 

分 类 号：TM752[电气工程—电力系统及自动化]