Discussion on the bus protections duplex configuration reconstruction

Bus protection is important to the steadly operation of grid, according to countermeasure requirement of relay protection, the bus differential protections upwards 220 kV degree must be duplicated, but the work of bus protection duplex configuration reconstruction relate to wide ranged, complex technique and excessive danger points. This paper analyzes the attentive safety, technology, experimentation, question of putting into operation, brings forward the resolusion of existing problem. And it has enlightenment on the bus protections duplex configuration reconstruction of congener substation.