摘要
以北卫碳纤维复合芯导线用于输电线路增容改造的实例为工程背景,运用有限元软件ANSYS建立三塔四线的有限元模型,并通过Matlab模拟沿高度变化的Kaimal风速谱,得到作用于输电塔和导地线的脉动风速时程曲线。由于碳纤维复合芯(aluminum conductor composite core,简称ACCC)导线具有重量轻、强度大和弧垂小等特点,计算得出了改造前使用的普通钢芯铝绞线及改造后使用的ACCC塔线体系的位移随时间的变化规律,以及在档距和塔高各自变化的情况下ACCC塔线体系的位移和应力,并与工程实际的塔线体系进行比较。结果表明,ACCC导线用于输电线路上的优越性及改造后模型的合理性可以节省工程造价,为以后的设计提供参考。
An aluminum conductor composite core(ACCC)is used for the Beiwei for Transmission Line,by using the finite element software ANSYS to establish a three towers,four wires finite element model and using Matlab to simulate the Kaimal wind spectrum along the height change.The fluctuating wind speed time curve of the transmission towers and grounded line can then be obtained.Due to the light weight,strength and sag characteristics of the ACCC,the displacement variation over time of the ACCC conductor can be calculated for the former ordinary ACSR and the tower line system after transformation.The displacement and stress are calculated when the span and tower height change in the ACCC tower line system.The comparison with the actual tower line system illustrates that the ACCC conductors for transmission lines are superior and the transformation model is reasonable,thus saving project costs and providing a reference for future design.
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2014年第4期749-752,783,共4页
Journal of Vibration,Measurement & Diagnosis
基金
国家自然科学基金资助项目(50978049)
关键词
碳纤维复合芯导线
输电线路
塔线体系
风荷载
动力响应
aluminum conductor composite core(ACCC)
transmission lines
towers and lines system
wind loads
dynamic response
