基于3D-DIC的输电导线微风振动动弯应变计算方法优化

姜岚; 陶文心; 杭翠翠; 黄荥; 叶卿辰

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基于3D-DIC的输电导线微风振动动弯应变计算方法优化

更新时间：2025-06-18

- 基于3D-DIC的输电导线微风振动动弯应变计算方法优化
- Optimization of Wind Vibration Dynamic Bending Strain Calculation Method of Transmission Wire Based on 3D-DIC
- 高压电器 2025年页码：1-12
- 作者机构：
  
  1.三峡大学电气与新能源学院，湖北　宜昌　 443002
  2.湖北省输电线路工程技术研究中心，湖北　宜昌　 443002
  3.国网湖北省电力有限公司经济技术研究院，武汉　 430070
- 作者简介：
  
  姜岚（1986—），男，博士，讲师，主要从事输电线路工程结构振动与控制方向的研究工作（E-mail：jl@ctgu.edu.cn）。
  陶文心（2000—），男，硕士研究生，主要从事基于图像处理的输电线路动力学工作（E-mail：1534694572@qq.com）。
- 基金信息：
  
  国家电网公司总部科技项目(5200-202322135A-1-1-ZN)
- DOI：
  中图分类号：
- 纸质出版日期：
- 稿件说明：
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姜岚, 陶文心, 杭翠翠, 等. 基于3D-DIC的输电导线微风振动动弯应变计算方法优化[J/OL]. 高压电器, 2025,1-12.

JIANG Lan, TAO Wenxin, HANG Cuicui, et al. Optimization of Wind Vibration Dynamic Bending Strain Calculation Method of Transmission Wire Based on 3D-DIC[J/OL]. High voltage apparatus, 2025, 1-12.
姜岚, 陶文心, 杭翠翠, 等. 基于3D-DIC的输电导线微风振动动弯应变计算方法优化[J/OL]. 高压电器, 2025,1-12. DOI：

JIANG Lan, TAO Wenxin, HANG Cuicui, et al. Optimization of Wind Vibration Dynamic Bending Strain Calculation Method of Transmission Wire Based on 3D-DIC[J/OL]. High voltage apparatus, 2025, 1-12. DOI：

摘要

针对输电导线微风振动下产生的动弯应变计算误差较大的问题，基于三维数字图像相关（3D-DIC）技术对输电导线线夹出口处动弯应变进行测量试验，改进使用末端挠度

计算动弯应变的方法。采用覆盖式贴涂法解决输电导线股间间隙应变计算困难的问题，对3D-DIC设备的准确性以及其测量输电导线表面应变的可行性进行了试验验证。以LGJ-120/20为例，通过激振系统和导线张力试验系统模拟微风振动工况，利用3D-DIC技术揭示了导线微风振动下线夹出口处动弯应变分布规律，并与公式计算值进行对比，表明公式计算值存在较大误差（40%~60%），进而分析了不同张力、振动频率对导线线夹出口动弯应变和振幅的影响，从而对动弯应变计算公式中的长度和试验因数进行修正，使动弯应变计算公式的误差降至10%以内。

Abstract

In order to solve the problem of large error in dynamic bending strain calculation of transmission wire generated by breeze vibration

the dynamic bending strain measurement test at the outlet of transmission wire clamp is carried out based on 3D digital image correlation (3D-DIC) technology

and the method of calculating dynamic bending strain using end deflection

is improved. The overlay coating method is used to solve the problem of calculating the gap strain between strands of transmission wires. The accuracy of 3D-DIC equipment and the feasibility of measuring the surface strain of transmission wires are verified by experiments. The dynamic bending strain distribution at the outlet of t

he downline clamp of the wire is revealed by 3D-DIC technology. The results show that there is a large error (40%-60%) in the calculated value of the formula. The influence of different tension and vibration frequency on the dynamic bending strain and amplitude of wire clamp outlet is analyzed

and the length l and test factor in the dynamic bending strain calculation formula are modified

so that the error of the dynamic bending strain calculation formula is reduced to less than 10%.

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references

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