Power distribution network fault processing method, device and system

The invention discloses a power distribution network fault processing method, device and system, and relates to the technical field of power system relay protection. The method comprises the following steps: after a power distribution terminal is powered on, terminal communication information and terminal service information are transmitted to a master station model center; receiving a distribution network topology file issued by the master station model center in real time, and identifying upstream and downstream switch information and power grid frame topology according to the distribution network topology file; and when the power distribution terminal detects a fault, fault isolation and non-fault area power supply recovery are carried out according to preset intelligent distributed FA logic based on the identified upstream and downstream switch information and the power grid network frame topology. The method not only can be adaptive to online flexible reconstruction of the net rack and greatly reduce lab