输电线路导线截面选择的优化设计

合理选择导线截面可以提高输电线路运行的经济性,促进降损节能。分析了按发热条件、按电压损耗条件、按经济电流密度等三种截面选择方法,并通过实例计算结果对比说明现行的按经济电流密度法选择的截面是偏大的。最后,设计了一种新的截面优化选择方法,实例计算结果验证了该方法是正确有效的。

Optimization Design of the Conductor Section Selection in the Transmission Line

The reasonable conductor section is an important content of grid planning,which could help the energy-saving and conservation.Three conductor section selection methods,including the conductor economical current density method,the fever condition method and the voltage loss condition method,are described in this paper.The compared result of an calculation example shows the conductor section chose by economical current density method is too larger than other methods.Hence,a new optimization method of conductor section selection is designed,and the calculation result testified its correctness and effectiveness.