随机脉动风场作用下输电塔线体系的动力响应分析
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TM726

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国家自然科学基金资助项目(52377157)


Dynamic response analysis of transmission tower line system under random fluctuating wind field
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    摘要:

    输电杆塔及塔线体系(简称塔线体系)是整个电力系统中输电环节的核心部分,沿海地区的强风对塔线体系有着重要影响。为研究在随机脉动风场作用下塔线体系的动力响应特性,文中以广东某地区的1W2C9型鼓型自立式输电杆塔为研究对象,建立输电杆塔的单塔及一塔两线的塔线耦联有限元模型,结合Davenport风速谱与四阶自回归法模拟具有空间相关性的单塔9节点及塔线体系49节点的脉动风场,研究在此脉动风场下的单塔及塔线体系的动力响应,并探究不同风向角对其动力响应的影响。研究结果表明:单塔及塔线体系的动力响应最大值大于其拟静力响应;由于塔线耦联效应的存在,输电线会增加塔线体系的稳定性,降低其动力响应;90°是输电杆塔单塔及塔线体系动力响应的最不利风向角。

    Abstract:

    The transmission tower and tower line coupling system is an important carrier of the power system transmission process. Strong winds in coastal areas have a significant impact on the transmission tower and tower line system. To study the dynamic response characteristics of tower line system under the action of random fluctuating wind fields,the 1W2C9 drum-type self-supporting transmission tower in Guangdong is taken as the research object. Finite element models for the single tower and one tower two-line tower line coupling system are established. By combining the Davenport wind speed spectrum with the fourth order autoregressive method,the fluctuating wind fieldswith spatial correlation are simulated for a single tower with 9 nodes and tower line system with 49 nodes. The dynamic response of a single tower and tower line system under this fluctuating wind field is studied,and the influence of different wind direction angles on theirdynamic response is explored. The results indicate that the maximum dynamic response of both the single tower and tower line system is greater than their pseudo-static response. The existence of transmission lines enhances the stability of the transmission tower line system,reducing its dynamic response. A wind direction angle of 90° proves to be the most unfavorable for the dynamic response of the single tower and tower line system.

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鄢呈旸,王立军,张闻哲,李威,周旋.随机脉动风场作用下输电塔线体系的动力响应分析[J].电力工程技术,2024,43(4):116-126

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  • 收稿日期:2023-12-15
  • 最后修改日期:2024-02-23
  • 录用日期:2023-10-26
  • 在线发布日期: 2024-07-23
  • 出版日期: 2024-07-28
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