摘要
文中研究旨在探讨线路脱冰对输电线路动力学的影响、导线覆冰脱冰响应及脱冰高度预测模型研究。基于Abaqus有限元分析软件,构建考虑风载荷的输电塔线系统模型,通过五种不同情况的实验,分析档距、高差、冰厚度、脱冰率等关键参数对最大脱冰高度的影响,基于卷积神经网络-多头自注意力(convolutional neural networks-multi-head self-attention,CNN-MHAM)网络构建输电线路脱冰跳跃高度预测模型,使用实验室实验数据与实际工况采集数据进行模型训练。最后,通过仿真验证所提线路脱冰高度预测模型与实际数据平均相对误差小于3%。所提研究为输电线路覆冰区域的绝缘间隙设计提供参考依据。
This paper aims to investigate the impact of wire de-icing on the dynamics of transmission lines,response of conductor icing and de-icing and prediction model of de-icing height.Initially,a transmission tower-line system model incorporating wind loads is developed using Abaqus finite element analysis software.Subsequently,experiments under five different conditions are conducted to analyze the effects of critical parameters such as span length,height difference,ice thickness,and de-icing rate on the maximum de-icing height.A convolutional neural network and multi-head self-attention(CNN-MHAM)-based model is then constructed to predict the jumping height of conductors following ice shedding,with the model trained using both laboratory experimental data and field-collected data.Simulation validation demonstrates that the proposed de-icing height prediction model achieves an average relative error of less than 3%when compared with actual data.This study provides valuable insights for designing the insulation clearance of transmission lines in icing-prone areas.
作者
李劲松
王帅
关少平
芦竹茂
原辉
俞华
LI Jinsong;WANG Shuai;GUAN Shaoping;LU Zhumao;YUAN Hui;YU Hua(State Grid Shanxi Electric Power Research Institute,Taiyuan 030001,China;State Grid Shanxi Electric Power Co.,Ltd.,Taiyuan 030021,China)
出处
《电测与仪表》
北大核心
2025年第8期75-84,共10页
Electrical Measurement & Instrumentation
基金
国网山西省电力公司科技项目(520530220003)。
关键词
输电塔线
有限元分析
冰覆盖分析
动态响应
脱冰高度预测
transmission tower line
finite element analysis
ice coating analysis
dynamic response
ice shedding height prediction
