覆冰导线舞动数值仿真分析  

Numerical simulation on galloping of iced donductors

作　　者：胡景[1] 严波[1] 张宏雁[2] 周松[3] 

机构地区：[1]重庆大学资源及环境科学学院工程力学系,重庆400044 [2]四川电力试验研究院,四川成都610071 [3]四川省电力工业调整试验所,四川成都610016

出　　处：《重庆大学学报（自然科学版）》2010年第3期76-81,共6页Journal of Chongqing University

基　　金：国家电网公司科技项目(2007-1-77);重庆市自然科学基金项目(CSTC2006BB6149)

摘　　要：利用ABAQUS有限元分析软件,通过欧拉梁单元的自由度释放和设置材料为不可压缩,模拟得到具有扭转自由度的覆冰导线的索单元,进一步利用用户自定义单元模拟覆冰导线所受的阻力、升力和扭矩空气动力载荷,分析了覆冰导线的舞动现象,并通过覆冰单导线与覆冰双分裂导线舞动模拟算例验证了方法的正确性。模拟研究了覆冰初始攻角、线路档距和导线初始张力等因素对覆冰导线舞动的影响规律。所得结果对覆冰导线舞动和防舞技术的研究具有一定的参考价值。To investigate galloping of iced conductors,with the release of the bending degree-of-freedom of Euler beam element and setting the material to be ＇No Compression＇ in ABAQUS software,a cable element with torsion degree-of-freedom is obtained.And then the aerodynamic loads including drag,lift and torque on the iced conductor are simulated by means of the user-defined element.The galloping of iced single conductor and iced twin bundle conductor are numerically analyzed to demonstrate the efficiency of the proposed method.The effects of initial attack angle,span length and initial tension in conductor on the behavior of galloping are investigated by numerical simulation.

关 键 词：覆冰导线 舞动 ABAQUS 索单元 

分 类 号：TM753[电气工程—电力系统及自动化] TM039