随机风场中覆冰四分裂导线防舞研究  

Anti-galloping for an iced quad-bundled conductor in stochastic wind field

作　　者：严波[1] 胡景[1] 周松[2] 张宏雁[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400030 [2]四川省电力工业调整试验所,成都610016 [3]四川电力科学研究院,成都610071

出　　处：《振动与冲击》2011年第7期52-58,共7页Journal of Vibration and Shock

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(CSTC;2009BB7367)

摘　　要：针对提出的一种适用于四分裂导线的防舞装置,采用数值模拟方法研究其防舞效果。给出新月型覆冰四分裂导线空气动力系数随攻角变化的风洞试验结果,为数值模拟研究提供基本参数。采用数值方法模拟沿线路变化的多点互相关风速时程样本,进而确定作用于覆冰导线上的空气动力载荷。数值模拟研究特征段线路安装防舞装置前后的运动过程,结果表明,该防舞装置可大大降低导线的运动幅值,对舞动具有有效的防止作用。A new anti-galloping device suitable for an iced quad-bundled conductor was proposed,and its anti-galloping efficiency was numerically studied.The aerodynamic coefficients of the quad-bundled conductor covered with ice versus attack angles determined by wind tunnel test were given to provide the basic parameters for numerical simulation.Spatial stochastic wind fields,based on which the aerodynamic loads on an iced conductor were determined,were numerically simulated.The dynamic processes of a typical transmission line without and with anti-galloping device were numerically simulated.It was shown that the amplitude of a typical line section of the conductor greatly decreases after installing an anti-galloping device.

关 键 词：覆冰四分裂导线 舞动 防舞装置 随机风场 

分 类 号：O39[理学—工程力学] TM75[理学—力学]