覆冰导线气动特性及驰振风洞试验  

Wind-tunnel tests for aerodynamic characteristics and galloping behaviors of iced conductors

作　　者：张宏雁[1] 严波[2] 刘小会[2] 胡景[2] 周松[3] 

机构地区：[1]四川电力科学研究院,成都610071 [2]重庆大学资源及环境科学学院,重庆400030 [3]四川省电力工业调整试验所,成都610016

出　　处：《振动与冲击》2013年第10期95-99,共5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：利用风洞试验测量新月形和扇形覆冰导线在不同风速下的气动力特性,得到其阻力系数、升力系数和扭矩系数随风攻角的变化规律,结果表明在测试的风速范围内气动系数受风速的影响很小。在风洞中实现了覆冰导线节段模型的驰振模拟,得到不同风速下导线节段模型的驰振响应。进而用舞动数值模拟方法模拟驰振试验,得到与风洞试验一致的结果,验证了舞动数值模拟方法的正确性。试验结果为覆冰导线舞动研究提供了重要的参考数据。The aerodynamic dynamic coefficients varying with the angle of wind attack on conductors attached with crescent-shaped and sector-shaped ice were measured by means of wind-tunnel test, and it is shown that the coefficients are nearly the same under different wind speeds. Galloping of iced conductor segment models under typical wind speeds was realized in the wind-tunnel tests and the galloping responses were obtained. The finite element models of the galloping test models were set up and their galloping responses were numerically simulated with the method proposed by the authors, and the agreement between the numerical results and the wind-tunnel tests results justifies the numerical method.

关 键 词：覆冰导线 气动特性 舞动 风洞试验 数值模拟 

分 类 号：TM75[电气工程—电力系统及自动化] O39[理学—工程力学]