应用数学和力学2026，Vol.47Issue(9)：1159-1178,20.DOI:10.21656/1000-0887.460131
覆冰分裂导线气动系数多保真代理模型
A Multi-Fidelity Surrogate Model for Aerodynamic Coefficients of Iced Bundle Conductors
摘要
Abstract
For quad-,six-,and eight-bundle conductors with crescent-shaped ice,the air flow fields around the iced conductors under different icing and wind conditions were numerically simulated with the computation-al fluid dynamics,and the variations of drag,lift,and torque coefficients of each iced sub-conductor vs.the wind attack angle were obtained.With the high-fidelity data of aerodynamic coefficients measured by wind tun-nel tests and the low-fidelity data by numerical simulations,a multi-fidelity surrogate model was built by means of the BP neural networks,the random forest algorithm and the feature enhancement technique,with the sub-conductor position,the ice thickness,the ice accretion angle,the wind speed,the turbulence intensity and the wind attack angle as the input,and the aerodynamic coefficients of each sub-conductor as the output.The effi-ciency of the surrogate model was verified through the analysis of aerodynamic stability regions based on the Den Hartog and Nigol coefficients,and through the galloping simulations of typical iced bundle conductors.By this multi-fidelity surrogate model,a software with the bundle number of conductor lines,the ice thickness,the ice accretion angle,the wind speed and the turbulence intensity as the input,and the aerodynamic coeffi-cient vs.the wind attack angle for each iced sub-conductor as the output,was developed.This work lays a foundation for the investigation of galloping of iced transmission lines and its prevention technologies.关键词
覆冰分裂导线/气动系数/机器学习/多保真代理模型Key words
iced bundled conductor/aerodynamic coefficient/machine learning/multi-fidelity surrogate model分类
数理科学引用本文复制引用
杨辉,严波,高英博,张博,吕中宾,刘光辉,伍兴旺,邓华超..覆冰分裂导线气动系数多保真代理模型[J].应用数学和力学,2026,47(9):1159-1178,20.基金项目
国家电网公司科学技术项目(5500-202324543A-3-2-ZN) （5500-202324543A-3-2-ZN）
