摘要
为了研究扰流防舞器的防舞效果及扰流防舞器直径对防舞效果的影响,分别对新月形覆冰输电导线、安装扰流防舞器的无覆冰输电导线及安装3种不同直径的扰流防舞器的新月形覆冰输电导线,进行刚性足尺截断模型天平测力风洞试验.测定各种工况对应的气动力系数曲线,通过对邓哈托系数和尼戈尔系数的分析,研究不同直径的扰流防舞器的防舞效果.试验结果表明:新月形覆冰导线会发生舞动;扰流防舞器不会使导线无覆冰时发生横风向舞动,使导线发生扭转舞动的可能性不大;不同直径的扰流防舞器均具有一定的防舞效果,其中直径为0.75倍导线直径的扰流防舞器的防舞效果最佳.
In order to investigate effect of the air flow spoiler preventing galloping of transmission line and influence of air flow spoiler＇s diameter,the aerodynamic coefficient curves of three types of transmission line rigid full scale were measured by balance in wind tunnel： cresent iced transmission line without air flow spoiler,naked transmission line with air flow spoiler and cresent iced transmission line with air flow spoiler.The aerodynamic coefficient curves of the transmission lines in every work condition were tested.The effects of the air flow spoiler and its diameter were analyzed by Den Hartog coefficients and Nigol coefficients of transmission lines.The crescent iced transmission line galloping can occur.The air flow spoiler can＇t cause transmission line without ice across-wind galloping.There is a slim chance that the air flow spoiler can cause transmission line torsional galloping.All the air flow spoilers of different diameters have certain effects to prevent galloping,and the air flow spoiler which is 0.75 times the line diameter has the best effect to prevent galloping.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2011年第1期93-98,共6页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目(50638010)
关键词
扰流防舞器
风洞试验
舞动
覆冰导线
air flow spoiler
wind tunnel experiment
galloping
iced transmission line
