浅析500kV智能变电站的重合闸问题

Analysis of Reclosing Protection for the 500kV Smart Substation

文章以安徽省首座500k V智能变电站中的线路重合闸为例,阐述了智能变电站中220k V线路与500k V线路双套重合闸的配合问题。文章结合目前智能变电站的工程实践以及传统变电站中双套重合闸的配合经验,探讨了双重化线路重合闸的二次重合问题。文章还深入分析了500k V线路重合闸与220k V线路重合闸在运行方式上的差异。

This paper takes the line recloser in the first 500 k V smart substation of Anhui province as an example and elaborates the coordination between two reclosing protections of 220 k V line and 500 k V line in the smart substation. It also summarizes the present engineering practices in the smart substations and the experience of the coordination between two reclosing protections in conventional substations,investigating the twi-reclosers of the double line recloser. Finally,this paper analyzes the difference of the operation mode between the 500 k V line recloser and the 220 k V line recloser.