增加架空线路输电能力--高自然功率技术

提高架空线路的输电能力已经成为当今的一个主题。提高输电能力的常用做法是通过增加导线截面或对地距离来改善输电线路的载流容量或热额定值。这些做法不能减少线路的串联阻抗和改善自然功率,也就不能因更高的输电功率带来更好的系统条件,例如电压性能和稳定水平。

Increasing the Transmission Capacity of Overhead Lines High Surge Impedance Loading Technique

The request for increasing the transmission capacity of overhead lines has turned into a major subject.Previously,a usual practice aiming to raise the line transmission capacity was to improve its ampacity or thermal rating by means of increasing the conductor cross section or its clearance to terrain.These actions however are not effective in redducing the series reactance and improving the Surge Impedance Loading(SIL),both of which could result in better system conditions for a higher transmitted power,such as voltage profile and stability.