220kV新田长江大跨越输电线路导线选择

输电线路中的大跨越段,造价高、重要性高且施工运行难度大,因此,其设计气象条件比一般线路严酷,对重要性和安全性的要求比一般线路高。由于导线的电气和机械特性决定了线路的建设和运行经济技术指标,因此,导线选择在工程中显得尤为重要。从导线材料、载流量、电气性能、机械性能、经济性能等方面进行综合比较,最终选择了JLHA1/G1A型钢芯铝合金绞线作为推荐方案。

Conductor Selection for 220 kV Xintian Changjiang River Large Crossing

For the high investment and more important than usual line and difficulty in construction,large crossing＇s weather case is more terrible than usual line,so its requirement of safety and significant is higher than usual line.Because of the conductor＇s electric performance and matteral character decide the cost of the line construction and the money of operation,so the selection of conductor is more important in the project.In this paper JLHA1/G1A conductors are recommended after comprehensive comparisons in material,electric performance,economy,etc.