Centralized relay protection and fault recovery system and method

The invention provides a centralized relay protection and fault recovery system and method, and belongs to the technical field of power distribution network relay protection. The system provided by the invention comprises a main station system and a power distribution acquisition terminal, and the main station system uniformly acquires electrical information on a main line and judges a fault section, so that the power distribution acquisition terminal is controlled to enable switches at two ends of the fault section to be directly switched off to isolate a fault or an in-station switch at the head end of the main line is firstly controlled to be switched off to isolate the whole line; and the switches at the two ends of the fault section are sequentially switched on to isolate the fault. Compared with a traditional relay protection mode, the method has the advantages that faults are isolated in the mode that the main station system controls the switches from the head end to the tail end of the main line in a