【摘要】 通过风洞试验测试了圆线同心绞导线、型线同心绞导线和新型同心绞导线在单根、双分裂和四分裂时的风阻力系数。测试结果表明:新型同心绞导线的风阻力系数随风速的增加而减小,与圆心同心绞导线和型线同心绞导线的风阻力系数随风速的变化规律不同;在低风速区,其风阻力系数大于圆线同心绞导线的风阻力系数,而在高风速区则相反;在单根和双分裂时的风阻力系数只有在高风速区时小于型线同心绞导线,而四分裂时的风阻力系数在整个测试风速范围内小于型线同心绞导线。更多还原

【Abstract】 The wind drag coefficient of round wire concentric-lay-stranded overhead conductors、formed wire concentric-lay-stranded overhead conductors and new type concentric-lay-stranded overhead conductors in single、doublebundled and four-bundled was investigated by wind tunnel test. Test results show that the wind drag coefficient of new type concentric-lay-stranded overhead conductors decreases with increase of wind speed. Its wind drag coefficient variation is significantly different from the wind drag coefficient variation of round wire concentric-lay-stranded overhead conductors and formed wire concentric-lay-stranded overhead conductors. Its wind drag coefficient is greater than that of round wire concentric-lay-stranded overhead conductors at low speed area,and on the contrary at the high speed.Its wind drag coefficient is less than that of formed wire concentric-lay-stranded overhead conductors only at high speed in single and double bundled. Its wind drag coefficient is less than that of formed wire concentric-lay-stranded overhead conductors at all test speed in four bundled.更多还原