摘要
为有效利用输电走廊,增加输电容量,广东电网拟在500kV五邑—狮洋线路工程中建设多段500 kV同塔四回线路,其潜供电流和恢复电压等问题较为复杂。为给工程设计、规划和运行提供参考,采用电磁暂态程序(EMTP)对系统不同运行方式和同塔线路不同退出方式下500 kV同塔四回线路的潜供电流、感应电压等问题进行了研究,提出了同塔线路占全线的比例对同塔四回线路潜供电流和恢复电压的影响较大,并给出了同塔线路单相重合闸的推荐时间。
Parallel muhi-circuit transmission lines have been widely used in China and overseas, which make more effective use of trans- mission passage way. Guangdong power grid is planning to build multi-500 kV-parallel-four-circuit-transmission lines in Wuyi-Shiyang Project. There are some complicated problems such as secondary arc current and recovery voltage, which was studied using EMTP program. It is proposed that the main influence factor of the secondary arc current and recovery voltage of 500 kV-parallel-four--circuit-transmission lines is the proportion of parallel lines, and the single phase reclosing time is given for providing references to engineering design, planning and operation.
出处
《中国电力》
CSCD
北大核心
2010年第11期14-19,共6页
Electric Power
关键词
同塔四回
相序
潜供电流
恢复电压
parallel four-circuit transmission lines
phase order
secondary-arc current
recovery voltage
