Abstract:

In view of reclosing operation mode of intelligent station, the action process and the way of close-reaction at reclosing configuration scheme in traditional and intelligent substation are discussed in the paper, besides, the change trend and reasons are pointed out. According to the operation experience of 500kV intelligent substation that has been put into operation, the follow chapters are going to analysis the reclosing startup logic, behavior, close-reaction condition, and the coordination problems between bus differential protection, line protection and intelligent terminal deeply, combining with the acceptance test in the capital construction. The mutual close logic and implementation methods are analyzed in the situation of two sets of reclosing system in other protection enter and permanent jump by specific examples. In addition, there are reasonable operation suggestions and allocation schemes have been given by combining with the actual summary of different reclosing devices conjunction mode in intelligent substation.

Key words: Intelligent substation, reclosing, atresia reclosing, intelligent terminal