输电线路风偏放电的影响因素研究

Study on Windage Yaw Discharge of Transmission Line

针对近年来频繁发生的风偏闪络事故,分析了风偏闪络的特点和原因,从风偏角计算中分析各因素对计算值的影响。结果表明,风速、风压不均匀系数、风向与导线轴向夹角以及风压高度变化系数都对风偏角有不同程度的影响,从而影响塔头的最小空气间隙距离。最后从设计和运行两方面提出了防治风偏闪络的措施。

According to the accidents caused by windage yaw occurred in recent years, the characteristics and reasons of flashover caused by windage yaw are analyzed. The influence of four factors on the calculated values of conductor swing angle is fully discussed, including wind speed, the angle between wind and conductor, wind pressure asymmetrical coefficient and wind pressure height coefficient. Combined with the analysis and calculation, some prevention measures about flashover caused by windage yaw are put forward.