摘要
以1 000 kV锡盟—南京特高压输电线路工程为例,采用ATP-EMTP软件建立仿真计算模型,分析了1 000 kV特高压输电线路工程中导线排列方式、线路长度及换位方式对地线能量损耗的影响。通过仿真发现,换位后地线上的感应电流可以减小30%,有效实现节能降损,经济优势显著。通过能量损失及经济性比较,推荐在逆相序排列方式下1 000 kV双回输电线路超过80 km宜进行1次全循环换位。
Taking the 1 000 kV power transmission project form Xilingol League located in the Inner Mongolia Autonomous Region to Nanjing for example, the influences of conductor arrangement, line length and line transposition on power loss in ground wire are analyzed by use of the simulation model built by ATP-EMTP. Simulation results show that the post-transposition induced currem in ground wire can be reduced by 30%, thus the energy saving and power loss reduction can be effectively implemented as well as evident economic benefit can be obtained. By means of comparing the power loss and economy under different ways for conductor arrangement and line transposition, it is recommended to implement a complete cycle transposition for 1 000 kV double circuit transmission utilizing the conductor arrangement of reverse phase sequence while its length is longer than 80 kin.
出处
《电网技术》
EI
CSCD
北大核心
2011年第4期21-24,共4页
Power System Technology
关键词
特高压输电线路
导线排列方式
导线换位
地线
能量损耗
ultra high voltage （UHV） transmission line
conductor arrangement
conductor transposition
grounding line energy loss
