铝包钢绞线最高允许运行温度研究

Research on Maximum Allowable Operating Temperature of Aluminum Clad Steel Stranded Conductor

铝包钢绞线张力大、弧垂小,在输电线路大跨越设计中具有很好的应用前景,但是因为输送容量偏小,限制了其使用范围。通过试验验证,将铝包钢绞线的最高允许运行温度提高至130℃,从而极大地增加了其输送能力,为今后大跨越线路设计提供了新的思路。

Aluminum clad steel stranded conductor has a bright application prospect in long span transmission line project because of its large tensional force and small sag.However,its application is limited due to its low ampacity.Based on the testing verification,the paper illustrates that the maximum allowable operating temperature of aluminum clad steel stranded conductor,can be increased up to 130 ℃ and its ampacity can be greatly increased as a result.This testing result gives us a new idea on designing long span transmission line projects.