On-site fast automatic recovery fa method and system based on differential protection and inter-terminal communication

Abstract

The application provides an on-site fast self-recovery FA method and system based on differential protection and inter-terminal communication, which comprises the following steps: determining the differential protection parameters of each power distribution terminal according to the topological structure of a power distribution network; when a fault point is detected, sending fault notification information to corresponding target upstream terminal and target downstream terminal through a target response terminal; the target upstream terminal and the target downstream terminal perform a first preset operation in response to the fault notification information; the target response terminal recloses after a preset time period to determine the fault type, and the target upstream terminal and the target downstream terminal perform a second preset operation based on the fault type to complete the fast self-recovery FA. According to the technical scheme of the embodiment of the application, the advantages of centralized and on-site FA strategies can be combined, the fault information interaction can be realized through the communication between the power distribution terminals, the step-by-step tripping can be realized through the differential protection, the full-automatic fast self-recovery of the power distribution line can be realized, and the regional power outage time can be effectively reduced.

Images