架空输电线路交叉跨越距离检查及计算方法探讨

摘要

The rise and decrease of temperature cause the thermal expansion and contraction of overhead line , which makes the sag and stress have a corresponding change .Using the equation of state to calculate the sag of the running transmission line and to determine the maximum sag during operation can make the calculation result be more accurate , and can calculate the sag of overhead line under different meteorological conditions , which is of important significance for the crossed crossing dis-tance measurement .%气温的升降引起架空线的热胀冷缩，使弧垂、应力发生相应的变化。采用状态方程式进行在运输电线路弧垂计算、判定运行最大弧垂，可使计算结果更为准确，且能计算出不同气象条件下的架空线弧垂，对交叉跨越距离测量有着重要的意义。