摘要
对于单电单充直流系统的110kV综合自动化变电站,在更换直流系统的过程中易出现直流消失、开关拒动等严重事故,采用搭建临时直流系统与原有直流系统并列的方式,实现对单电单充方式下110kV综合自动化变电站直流系统的改造,通过试验选择临时直流搭建方案,制定了具体的直流系统改造具体实施步骤,并对并列产生的环流等问题提出了相应的解决方案。
For single charging supply and single charger of DC system in a 110 kV substation integrated automation, it will subject to disappear or the switch will miss trip when DC power supply is replaced. This paper plans for finding a way out of the difficulties through a temporary DC system and the existing DC systems operate in parallel. By test, temporary DC system is built, implement process of DC reconstruct is made, and circulations caused by parallel operation are solved.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第7期116-118,123,共4页
Power System Protection and Control
关键词
直流系统
直流改造
环流
DC system
DC transformation
loop current
