摘要
为了节省用地和降低工程造价,云广±800kV直流工程与兴安±500kV直流工程在广东省内共用一个接地极,并在极址与每个接地极线之间安装了隔离开关(极址隔离开关)。基于共用接地极实际运行情况,讨论了极址隔离开关及有关保护的存在问题,建议在接地极线和极址隔离开关之间增加一个接地隔离开关以保证维护安全。
For terra saving and cost reducing,Yunnan-Guangdong ±800 kV DC project uses a common grounding electrode with Xingren-Baoan ±500 kV DC project in Guangdong province,and the grounding electrode is connected to each pole line through a disconnector （called as electrode side disconnector）.Based on the operation practice of the common grounding electrode,this paper discusses the issue of electrode side disconnector and correlative protection,and proposes to add a grounding disconnector between the electrode side disconnector and the pole line to ensure maintenance security.
出处
《南方电网技术》
2010年第4期67-69,共3页
Southern Power System Technology
关键词
云广直流
兴安直流
共用接地极
隔离开关
Yunnan-Guangdong UHVDC project
Xingren-Baoan HVDC project
common grounding electrode
disconnector
