The Incorrect Action Analysis Of Two-stage Backup Automatic Switch

According to a 110 kV within the bridge connection of two-stage backup automatic switch in substation misoperation, line reclosing match problem and the cooperation of the two-stage backup automatic switch device are analyzed in this paper. In view of the action logic analysis, this paper discusses two kind of timer logic in different protection equipment, and puts forward the improvement scheme of different principle. This research provides a reliable basis on the regional power grid for the related relay protection setting work, and guarantees normal operation of power grid.