山东大学学报 (工学版) ›› 2023, Vol. 53 ›› Issue (4): 120-127.doi: 10.6040/j.issn.1672-3961.0.2022.355
• 电气工程 • 上一篇
张思祥1,张勇1,姜伟国1,袁春元1,王晓阳2,田利2*
ZHANG Sixiang1, ZHANG Yong1, JIANG Weiguo1, YUAN Chunyuan1, WANG Xiaoyang2, TIAN Li2*
摘要: 基于输电线路实际工程,分别建立了四分裂导线风场模型和输电塔-线-间隔棒耦合模型,研究分裂导线气动特性和舞动响应受覆冰形状、覆冰厚度、风速和风攻角等参数的影响规律,明确导线与金具碰撞磨损机理。研究结果表明:各分裂导线间的气动特性存在较大差异,阻力系数受各参数的影响显著,随着覆冰厚度和风速的增加阻力系数逐渐增大;覆冰形式和覆冰厚度对升力系数的影响较小,风速和风攻角的影响较大;导线舞动过程中与连接金具发生了摩擦连续碰撞和瞬时强烈碰撞,导线最大接触法向作用力随风速增加而增大,随覆冰厚度增加而降低。本研究揭示了四分裂覆冰导线舞动特性规律和碰撞磨损机理,可以为输电线路防舞动设计和安全运营提供指导。
中图分类号:
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