独立挂点双联悬垂绝缘子串在连续上下山时的受力分析及串长调整

输电线路设计过程中,经常会采用独立挂点双联悬垂串的方式,而当独立挂点的双联串出现在连续上下山的杆塔时,往往会出现两悬垂串受力不均,甚至出现一串受力而一串松弛的情况。文章通过采用悬链线公式计算方法对两串受力进行分析,计算出串长的理论调整值,最后结合实际调整值来验算两串的实际受力情况,保证两串均满足规定要求。

The Force Analysis of Independent Hanging Point Duplex Link Suspension Insulated String when Continual Climb up and down the Hill and the Adjustment of String Length

During the design process of the transmission lines,the mod of independent hanging point duplex link suspension strings will often be used,while the independent hanging point duplex link strings appearing in the tower which continuously climb up and down the hill,uneven pressure of the two strings often appears,even an insulator is forced and the other is relax.By using the method of catenary formula calculation,this article analyzes the force of the two strings,calculates the theoretical adjustment value of the string length,at last,combining the actual adjusting value,it checks the calculation of the actual stress of two strings to make sure that the two strings meet the specified requirements.