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支持式管母线风致振动数值仿真分析

施浩楠 白英 冯玉清 耿小亮 席婉婉 李伟男

施浩楠, 白英, 冯玉清, 耿小亮, 席婉婉, 李伟男. 支持式管母线风致振动数值仿真分析[J]. 机械科学与技术, 2023, 42(7): 1009-1015. doi: 10.13433/j.cnki.1003-8728.20220072
引用本文: 施浩楠, 白英, 冯玉清, 耿小亮, 席婉婉, 李伟男. 支持式管母线风致振动数值仿真分析[J]. 机械科学与技术, 2023, 42(7): 1009-1015. doi: 10.13433/j.cnki.1003-8728.20220072
SHI Haonan, BAI Ying, FENG Yuqing, GENG Xiaoliang, XI Wanwan, LI Weinan. Numerical Analysis of Wind Induced Vibration of Supporting Type Tubular Busbars[J]. Mechanical Science and Technology for Aerospace Engineering, 2023, 42(7): 1009-1015. doi: 10.13433/j.cnki.1003-8728.20220072
Citation: SHI Haonan, BAI Ying, FENG Yuqing, GENG Xiaoliang, XI Wanwan, LI Weinan. Numerical Analysis of Wind Induced Vibration of Supporting Type Tubular Busbars[J]. Mechanical Science and Technology for Aerospace Engineering, 2023, 42(7): 1009-1015. doi: 10.13433/j.cnki.1003-8728.20220072

支持式管母线风致振动数值仿真分析

doi: 10.13433/j.cnki.1003-8728.20220072
基金项目: 

航空科学基金项目 20170153001

详细信息
    作者简介:

    施浩楠(1991-), 本科, 研究方向为变电站设计, 3431674@qq.com

    通讯作者:

    耿小亮, 博士, 高级工程师, gengxiaoliang@nwpu.edu.cn

  • 中图分类号: TB123

Numerical Analysis of Wind Induced Vibration of Supporting Type Tubular Busbars

  • 摘要: 支持式管母线在野外长期服役期间经常遇到风致振动的问题。本文采用数值模拟方法,对支持式管母线抗强风振动特性及阻尼对振动的影响进行了分析。计算了管母线简化模型的固有频率和振型以及受到风荷载作用时的变形特征,采用静态算法和动态算法对比分析了阻尼线对管母线抗风振动所起到的作用。进而对支持式管母线全尺寸结构在风荷载作用下的动态特性进行了计算,分析了阻尼线及管母线结构阻尼对抗风振动的影响。结果表明,理想条件下,阻尼线能有效减小受风载后管母线简化模型的振动变形,但在真实全尺寸管母线结构中,由结构连接等形成的结构阻尼比阻尼线对管母线抗风振动的效果更为显著,有无阻尼线对真实结构振动特性不产生明显区别。
  • 图  1  110 kV支持式管母线安装图

    Figure  1.  Installation diagram of the 110 kV supported bus duct

    图  2  支持式管母线典型结构尺寸

    Figure  2.  Typical structural dimensions of supported bus ducts

    图  3  管母线截面尺寸

    Figure  3.  Cross-sectional dimensions of thebus duct

    图  4  110 kV支撑式管母线三维结构图

    Figure  4.  3D structural diagram of the 110 kV supported bus duct

    图  5  阻尼线简化示意图

    Figure  5.  Simplified diagram of the damping wires

    图  6  无阻尼线管母线的前4阶振型图(变形放大1 000倍)

    Figure  6.  The preceding four first-order mode figures of undamped bus ducts (deformation amplified 1 000 times)

    图  7  有阻尼线管母线的前4阶振型图(变形放大1 000倍)

    Figure  7.  The preceding four first-order mode figures of damped bus ducts (deformation amplified 1 000 times)

    图  8  阻尼线施加前后管母线的固有频率

    Figure  8.  Natural frequencies of the bus duct before and after applying damping wires

    图  9  风荷载施加方向

    Figure  9.  Direction of wind load application

    图  10  无阻尼线管母线沿风向变形(变形最大时刻, 变形放大100倍)

    Figure  10.  Deformation of the undamped bus duct along the wind direction (at maximum deformation moment, deformation amplified 100 times)

    图  11  有阻尼线管母线沿风向变形(变形最大时刻, 变形放大100倍)

    Figure  11.  Deformation of the damped bus duct along the wind direction (at maximum deformation moment, deformation amplified 100 times)

    图  12  有/无阻尼线管母线的最大变形(静态算法)

    Figure  12.  Maximum deformation of the bus duct with and without damping wires (static analysis)

    图  13  有/无阻尼线管母线的最大变形(动态)

    Figure  13.  Maximum deformation of the bus duct with and without damping wires (dynamic analysis)

    图  14  无阻尼线110 kV支持式管母线x向变形(5 s时刻)

    Figure  14.  x-directional deformation of the undamped 110 kV supported bus duct (at 5 s moment)

    图  15  有阻尼线110 kV支持式管母线x向变形(5 s时刻)

    Figure  15.  x-directional deformation of the damped 110 kV supported bus duct (at 5 s moment)

    图  16  有/无阻尼线110 kV支持式管母线的最大变形

    Figure  16.  Maximum deformation of the 110 kV supported bus duct with and without damping wires

    表  1  材料参数表

    Table  1.   Material parameters

    材料 部件 弹性模量E/MPa 泊松比 密度ρ/(kg·m-3)
    铝合金 金具 72 000 0.3 2 800
    阻尼线 100 0.3 2 800
    金具托架、耳片 72 000 0.3 2 800
    钢Q235 底部支架、横梁、管母线 210 000 0.3 7 800
    陶瓷 支柱绝缘子 110 000 0.3 6 000
    绝缘子 下法兰盘 173 000 0.3 3 440
    法兰盘 上法兰盘 173 000 0.3 2 340
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-08-03
  • 刊出日期:  2023-07-25

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