绝缘护套对减小输电线路导线闪络距离的影响研究

AStudy on the Effect of Safe Distance Increasing by Insulation Sheaths Covered on Transmission Line Conductors

提出通过在导线表面包覆绝缘护套来提高导线间以及导线对地物间隙的安全距离的方法,试验研究了双根导线包覆2.6 mm和4 mm绝缘护套对间隙安全距离的影响,发现双根包覆护套能显著提升间隙安全距离,安全距离提升量有一定的分散性,双线包覆4 mm护套最大可提升间隙安全距离约20cm,两种不同厚度的护套在提升间隙安全距离方面没有明显差异。

The method is proposed in the paper to improve the safe distance between conductorsand conductors to ground through the insulating sheath covered on the surface of the wire.The ef?fect of double conductors covered by2.6mm and4mm insulation sheaths on the safe distance isstudied.Double conductors covered by insulation sheath is an effective way to improve the safe dis?tance.But the increasing of safe distance varies.Conductors covered by4mm insulation sheathsleads to the largest increasing of the safe distance,which is about20cm.No obvious difference isfound between effect of two different insulation sheaths on increasing the safe distance of the trans?mission line conductors.