摘要
利用计算流体动力学方法,分别计算了安装有扰流防舞器、悬挂式阻尼片和固接式阻尼片的覆冰输电导线的气动力系数,计算结果表明:安装有扰流防舞器的导线,其不同截面的气动力可以互相抵消,扰流防舞器能够有效抑制导线的舞动;安装有悬挂式阻尼片的导线,其邓哈托系数恒大于0,其尼戈尔系数大幅度增大,悬挂式阻尼片也是有效的防舞装置;安装有固接式阻尼片的导线,其邓哈托系数和尼戈尔系数未发生改变,固接式阻尼片不是有效的防舞措施。
By use of calculation method for fluid dynamics, the coefficient of aerodynamic forces of ice-coated transmission lines installed air flow spoilers, suspension damping boards and fixed damping boards are calculated respectively. Calculation results show that for conductors installed air flow spoilers the aerodynamic forces at different sections can be canceled each other, it shows that the air flow spoilers can effectively eliminate the galloping of conductors; the Den Hartog coefficients of conductors installed suspension damping boards are constantly positive and their Nigol coefficients considerably increase, thus suspension damping boards are also effective anti-galloping devices; as to the conductors installed fixed damping boards, there is not any changes of their Den Hartog coefficients and Nigol coefficients, therefore the fixed damping boards are ineffective for anti- galloping.
出处
《电网技术》
EI
CSCD
北大核心
2010年第2期200-204,共5页
Power System Technology
基金
国家自然科学基金项目(50638010)~~
关键词
覆冰导线
舞动
扰流防舞器
悬挂式阻尼片
固接式阻尼片
ice-coated transmission lines
galloping
air flow spoiler
suspension damping board
fixed damping board
