500kV同塔双回线路导线排列方式对电气特性的影响

Influence of Arrangement Manner of Lead to the Electric Characteristic for 500kV Double Circuit Transmission Line

同塔双回 5 0 0kV线路的导线排列方式影响其电晕损失、无线电干扰等 ,论文以川渝电网某5 0 0kV同塔双回线路的典型杆塔为例 ,利用EMTP程序进行仿真计算 ,从优化导线排列的角度出发 ,对其电气特性进行了深入研究 ,得到该线路的无线电干扰水平约 37～ 4 0dB ,同等条件下导线采用逆相序排列方式 ,地面场强最小 ,且不会超过 6kV/m ,线路间不平衡度为次好 ,地线感应电压和电流最小 ,综合效果来看 。

The lead arrangement manner of 500 kV double circuit transmission line will affect corona loss, wireless disturbance and so on. Based on typical tower of 500 kV double circuit transmission line from Chuanyu power network, EMTP is used to analyze the influence of arrangement manner of lead to the electric characteristic for optimizing the arrangement of lead. The level of wireless disturbance is in 37～40 dB. Field strength of ground is the least when the lead arrangement is in inverse order, and the unbalance between two lines is better. The induced voltage and current is the least in the same situation. The lead arrangement in inverse order is the optimization arrangement.