铝包钢芯高导电率铝绞线在输电线路中的应用  

Application of High Conductivity Aluminum-Clad Steel Reinforced Conductors in Transmission Line

作　　者：叶鸿声[1] 毛庆传[2] 王彬[1] 

机构地区：[1]华东电力设计院,上海市200001 [2]上海电缆研究所,上海市200093

出　　处：《电力建设》2014年第8期108-112,共5页Electric Power Construction

摘　　要：铝包钢线具备钢线的优越抗拉性能和铝的良好导电性能,耐腐蚀性能大大优于镀锌钢线,耐热性能良好。采用20.3%IACS的铝包钢线代替镀锌钢线作为加强芯,与高导电率铝线组成节能导线,比同规格的钢芯高导电率铝绞线机械性能有所提高,弧垂特性稍好,耐腐蚀性能明显提高,而电晕特性、电磁环境特性保持不变;尤其适用于沿海和重污秽地区,能够延长导线的使用寿命;应用于钢比为7%、9%、13%的导线时使电阻率分别下降1.2%、1.6%、2.3%以上。在500 kV线路典型算例中,导线费用增加部分约4年即可从降低的电能损耗中收回,此后每年能有很大的经济效益,值得推广。Aluminum-clad steel wire has the advantages of the good tensile strength of steel and the good conductivity of aluminum,and has much better anti-corrosion performance than zinc-coated steel wire,as well as the good thermal resistance.By replacing zinc-coated steel wire with 20.3% IACS aluminum-clad steel wire,and using high conductivity aluminum conductors,the composite energy-saving conductor has better mechanical performance,better sag characteristics, and better anti-corrosion performance than the zinc-coated steel reinforced cable, while keeps the same corona and electromagnetic environment characteristics.It is especially suitable for coastal or heavy polluted area.With using ACSR of 7%,9%,13% steel ratio,the resistivity of cable is reduced by 1.2%,1.6%,2.3%,respectively.Taking 500 kV transmission line as typical example,the saved energy loss can cover the extra conductor cost in 4 years,and give good financial benefit in following years.The aluminum-clad steel reinforced cable is worth popularizing.

关 键 词：铝包钢芯 高导电率铝 电能损耗 技术经济 

分 类 号：TM751[电气工程—电力系统及自动化]