铝包殷钢芯耐热铝合金导线的设计应用研究

Study on Design and Application of Aluminum Clad Invar Steel Core Thermal-resistant Aluminum Alloy Conductor

利用斜抛物线公式结合拐点温度计算方法,搭建了适用于铝包殷钢芯导线的张力弧垂计算模型,并利用Excel自带的“Visual Basic”编制迭代计算程序;结合实际工程案例,理论分析了铝包殷钢芯导线的机械特性、弧垂特性、拐点温度随档距变化特点、载流量情况等,总结了适用于铝包殷钢芯导线工程设计流程,供线路增容改造设计参考。

Tension sag calculation model suitable for aluminum clad invar steel core conductor is established by using the oblique parabola formula and the inflection point temperature calculation method,and the"Visual Basic"of Excel is used to compile the iterative calculation program.Based on the practical engineering cases,the paper theoretically analyzes the mechanical characteristics,sag characteristics,inflection point temperature variation characteristics with span and current carrying capacity of aluminum clad invar steel core conductor,and summarizes the engineering design process suitable for aluminum clad invar steel core conductor,which can be used as a reference for the design of line capacity expansion and reconstruction.