电力系统及其自动化学报2013，Vol.25Issue(3)：138-141,4.
城市中压配网中性点小电阻接地方式分析
Analysis of Low-resistance Neutral Grounding in Urban Medium-voltage Power Grid
干耀生 1唐庆华 1方琼 1张黎明 1付艳华 1房亚囡1
作者信息
摘要
Abstract
The high-speed development of urban economy and society have higher requirement on the running reliability of medium-voltage power grid,which is directly influenced by the neutral grounding mode.In this paper,the low-resistance grounding mode for medium-voltage power grid is analyzed,based on the consideration of insulation coordination,personnel safety,power supply reliability and relay protection.Based on the running characteristics of low-resistance grounding,the selection principle of low resistance is proposed.The obtained results show that the low resistance can have better inhibition on the neutral voltage offset,which makes non-fault phase have little higher stead-state voltage.Therefore,the low-resistance neutral grounding system is suitable to the developing need and running variation of urban power grid,which is helpful to further investigate the more effective grounding mode and to promote the safety and reliability of power system.关键词
城市中压配电网/中性点接地/接地方式/小电阻接地/供电可靠性Key words
medium-voltage power grid/ neutral grounding/ grounding mode/ low-resistance grounding/ power supply reliability分类
信息技术与安全科学引用本文复制引用
干耀生,唐庆华,方琼,张黎明,付艳华,房亚囡..城市中压配网中性点小电阻接地方式分析[J].电力系统及其自动化学报,2013,25(3):138-141,4.
