南方电网技术2025，Vol.19Issue(5)：120-127,8.DOI:10.13648/j.cnki.issn1674-0629.2025.05.012
绞合型碳纤维复合材料芯导线压接缺陷的漏磁场仿真
Simulation on Leakage Magnetic Field of Crimping Defects in Twisted Carbon Fiber Composite Core Conductors
摘要
Abstract
Carbon fiber composite core soft aluminum conductors have the advantages of large capacity,small sag,high conductivity,and obvious energy-saving effects,making them one of the ideal solutions to improve the capacity of transmission corridors.However,the bending resistance of carbon fiber composite cores is weak,and they are prone to damage and fracture during installa-tion and construction process,lacking effective detection techniques.In order to solve the above problems,a magnetic leakage detec-tion method of is designed based on the theory of carbon fiber composite core magnetic leakage detection theory.Based on a three-dimensional finite element simulation model of magnetic film coated carbon fiber core,crimping fittings,and excitation device,the influences of key parameters such as permanent magnet size,magnetic pole spacing,and radial air gap distance on magnetic leakage signals are analyzed.The optimized design parameters are:permanent magnet size L1 is 15 mm,the pole distance L2 is 50 mm,and the gap distance M is 2 mm.Finally,the influence of the fracture scale of carbon fiber composite material cores on magnetic flux leakage signals is analyzed,confirming the technical feasibility of magnetic leakage detection for local fracture defects in carbon fiber composite cores.The axial component of magnetic induction intensity first increases and then decreases,reaching its maximum value when the fracture scale d=4 mm,while the radial component of magnetic induction intensity increases with the increase of fracture scale.关键词
漏磁检测/复合材料芯导体/励磁参数/有限元分析Key words
magnetic leakage detection/composite core conductor/excitation parameters/finite element analysis分类
信息技术与安全科学引用本文复制引用
俸波,张炜,廖永力,夏小飞,龚博,赵林杰,李锐海..绞合型碳纤维复合材料芯导线压接缺陷的漏磁场仿真[J].南方电网技术,2025,19(5):120-127,8.基金项目
国家自然科学基金资助项目(52177147) （52177147）
中国南方电网有限责任公司科技项目(GXKJXM20220077).Supported by the National Natural Science Foundation of China(52177147) （GXKJXM20220077）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(GXKJXM20220077). （GXKJXM20220077）
