【摘要】 目前中国超高压输电线路上普遍采用一次自动重合闸,对二次自动重合闸鲜有研究。笔者分析了在某些超高压输电线路上合理设置第二次自动重合闸对系统的有利影响,提出了应用于500 kV输电线路的二次自动重合闸装置的设计思路,并介绍了在现有保护装置上增加第二次重合闸功能的一种具体实施方法。分析结果表明,在某些超高压输电线路上实施二次自动重合闸,能够提高电力系统的稳定性。依据研究开发的二次自动重合闸装置在华北电网试点运行效果良好。更多还原

【Abstract】 In China,EHV transmission lines usually adopt one-shot auto-reclosing scheme.In this paper,the favorable effects of properly designed two-shot auto-reclosing scheme for some EHV transmission lines are analyzed,and the design idea of a two-shot auto-reclosing device for 500 kV transmission lines is introduced.Furthermore,the implementation method of adding second-shot auto-reclosing function to existing protection devices is discussed.Analysis shows that the stability of the power system can be improved by applying two 0 shot auto-reclosing scheme to some EHV transmission lines.The two-shot auto-reclosing devices have been applied to the North China Power Grid and have achieved good operation effect.更多还原