碳纤维复合芯导线在大跨越增容工程中的应用  

Application of High Strength Thermo-resistance Alloy Aluminum Conductor Composite Core Reinforced in Large Crossing Transmission Line with Capacity Increase

作　　者：高媛 GAO Yuan(China Energy Engineering Group Guangdong Electric PowerDesign Institute Co.,Ltd.,Guangzhou 510663,China)

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广东广州510663

出　　处：《电力勘测设计》2019年第5期31-34,43,共5页Electric Power Survey & Design

摘　　要：维持现有路径,不对杆塔进行改造,仅更换增容导线是大跨越增容的理想方案。碳纤维复合芯(Aluminium Conductor Composit Core,ACCC)和耐热铝合金线(Aluminium Conductors Steel-Reinforced,ACSR)绞制的导线,具有重量轻、拉重比大、强度大、低弧垂、载流量大和耐腐蚀性能好等特点,可以满足线路大约双倍的增容要求。由于碳纤维复合芯的特殊性质,导线迁移点温度的计算和复合芯失效情况下的张力弧垂验算是大跨越工程中运用的关键技术,且部分配套金具需特殊考虑,如悬垂线夹和耐张线夹。Only replacing the conductor is an ideal scheme for retrofitting an existing large crossing transmission line without needing to change the existing transmission line route and towers.ACCC is able to carry approximately twice as much current as ACSR cable.Lighter weight,large T/W,high strength,low sag,more capacity and good corrosion resistance is the primary advantages of ACCC conductor.Due to the special properties of the carbon fiber composite core,the calculations of knee-point temperature and the sag of conductor composite core damaged are important in the large crossing transmission line.ACCC conductor requires special fittings,such as suspension clamp and strain clamp.

关 键 词：碳纤维复合芯 迁移点温度 悬垂线夹 耐张线夹. 

分 类 号：TM75[电气工程—电力系统及自动化]