±500kV同塔双回直流线路的极性布置  

The Polarity Arrangement of ±500 kV DC Lines with Double Circuits on the Same Tower

作　　者：马文超[1] 吴新桥[1] 廖民传[1] 

机构地区：[1]广东省电力设计研究院,广州510663

出　　处：《南方电网技术》2010年第6期58-60,共3页Southern Power System Technology

摘　　要：极性的合理布置是实现双回直流线路共塔的重要环节。通过仿真计算,从地面合成电场强度和耐雷水平两方面对±500 kV同塔双回直流线路的4种极性布置方式进行了分析比较,结果表明,所设计的塔型和推荐的极性布置方式是合理的,其地面合成电场强度水平为各方式中最低,且耐雷水平能完全满足线路的安全运行需要。The rational polarity arrangement is important to realize double DC circuits on the same tower.Simulation calculations are carried out in this paper to analyze the synthetic ground electric-field intensity and lightning withstanding level of four different polarity arrangements in ±500 kV double DC circuits on the same tower,and the results show that the designed tower structure and recommendatory polarity arrangement are reasonable as the synthetic ground electric-field intensity is lowest in the arrangement and the lightning withstanding level can completely meet the requirement for the safe operation of double circuits.

关 键 词：高电压 直流输电 双回路 极性布置 

分 类 号：TM75[电气工程—电力系统及自动化]