摘要
我国中压电网普遍采用小电流接地系统,该系统的单相接地故障选线问题一直没有得到很好的解决。该文针对这一现状,结合理论分析、仿真研究和文献报导,对现有的接地选线技术进行了归纳,分析了这些选线方法的原理、应用条件及存在的问题,总结了这些方法可行的改进方案和最新的研究成果。最后指出了小电流接地选线技术的发展方向。
Small current neutral grounding systems is widely applied to medium-voltage power network in China, however the faulty line selection of single-phase grounded transmission line in medium-voltage power network is still not well solved. According to such a situation and combining theoretical analysis and simulation research with reports published in literature, existing faulty line selection technologies are generalized, and working principles, application conditions and existing defects of these technologies are analyzed, meanwhile the feasible improvement of these technologies and the up-to-date research achievements in this field are summarized. Finally, the development trend of faulty line selection technology for small-current neutral grounding system is pointed out.
出处
《电网技术》
EI
CSCD
北大核心
2009年第18期219-224,共6页
Power System Technology
关键词
小电流接地系统
故障选线
消弧线圈
配电网
继电保护
small current neutral grounded system
faulty line selection
arc-suppression coih distribution networks
protective relaying
