基于能量平衡的架空输电线风能曲线研究

Research on Aeolian Power Curve of Overhead Conductor Based on Energy Conservation Principle

深入研究Slethei、Diana风能曲线对导线的风能输入研究意义重大。采用Slethei、Diana风能曲线以及对应的拟合解析表达式,研究微风激励作用下单根导线的振动,通过实际自阻尼测试得到的系数绘出自阻尼特性曲线。根据能量平衡原理,求得风振平衡点,并对比两种曲线拟合的解析式的适用性。结果表明,根据风能曲线求微风振动的平衡点时,采用Diana风能曲线更合适。研究结果为深入研究Slethei、Diana曲线奠定了基础。

Further study of wind power curve is of great significance for the research of the wind energy input of the conductor.In this paper,vibrations of the simple conductor under the breeze incentive are studied based on the Slethei and Diana wind power curves and the corresponding mathematical expressions.According to the coefficient given by the selfdamping measurement,the self-damping characteristic curve is drawn.Then,the wind-vibration balance point is obtained by using energy balance principle.The applicability of two wind power curves is discussed from a detailed comparison.The results show that it is more appropriate to adopt the Diana winter power curve when obtaining wind-vibration balance point according to the wind power curve.The study lays the foundation of the further research of the Slethe and the Diana wind power curves.