| 吕中宾,司佳钧,张博,邹乔戈,李冬青,李黎.脱冰工况下特高压直流输电线路耐张联板动态响应分析[J].计算力学学报,2023,40(4):656~664 |
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| 脱冰工况下特高压直流输电线路耐张联板动态响应分析 |
| Dynamic response analysis of UHVDC transmission lines’ tension plates under deicing conditions |
| 投稿时间：2021-12-07 修订日期：2022-02-10 |
| DOI：10.7511/jslx20211207004 |
| 中文关键词: 脱冰动态响应 耐张联板 特高压直流输电线路 非线性屈曲 有限元分析 |
| 英文关键词:dynamic response of deicing tension plate UHVDC transmission line nonlinear buckling FEA |
| 基金项目: |
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| 摘要点击次数: 450 |
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| 中文摘要: |
| 耐张联板作为连接输电线路和绝缘子的重要构件,研究其在脱冰工况下的动态响应特性对保证输电线路安全稳定运行具有重要意义。通过搭建两种典型的特高压直流输电线路耐张段模型,以输电线路的脱冰振动作为荷载来源,对耐张联板的动态响应及屈曲特性进行分析。最后通过试验验证,测量耐张联板的受力以及屈曲状态,评估耐张联板屈曲的临界值。结果表明,耐张联板在脱冰工况下的动态响应特性及屈曲特性主要受输电线路沿线载荷影响,最剧烈的振荡发生在脱冰现象的前20 s内,并且在耐张档脱冰工况下会发生最严重的屈曲变形,应力载荷主要集中在螺栓孔包围的梯形区域内。研究结果为耐张联板的结构优化设计提供了参考依据。 |
| 英文摘要: |
| As an important component connecting the transmission line and the insulator,it is of great significance to study the dynamic response characteristics of the tension plate under de-icing conditions to ensure the safe and stable operation of a transmission line.By building two typical models of the tensile section of a UHVDC transmission line,and taking the deicing vibration of the transmission line as the load source,the dynamic response and buckling characteristics of the tension plate are analyzed.Finally,in an experimental verification,the stress and buckling state of the tension plate are measured,and the critical buckling load of the tension plate is evaluated.The results show that the dynamic response characteristics and buckling characteristics of the tension plate under the deicing condition are mainly affected by the load along the transmission line.The most severe oscillation occurs within the first 20s of the deicing condition,and the most severe buckling deformation occurs in the deicing condition of the tension section,and the stress load is mainly concentrated in the trapezoidal area surrounded by the bolt holes.This research provides a reference for the structural optimization design of the tension plate. |
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