Method for formulating transient stability emergency control generator tripping scheme for interconnected network

The invention provides a method for formulating a transient stability emergency control generator tripping scheme for an interconnected network. The method comprises the steps of carrying out time-domain simulation on a network fault for which a generator tripping scheme needs to be formulated, extracting phase trajectory information of critical unit pairs and judging whether power angle instability of a system appears or not when an accident occurs; if the power angle instability does not appear, not carrying out generator tripping; and if the power angle instability appears, identifying critical units according to angular velocity information, carrying out stand-alone equivalent calculation on a critical cluster, calculating a generator tripping value, sorting the critical units according to the rotating speed at the generator tripping moment and selecting a generator tripping object according to the sorting result. According to the setting method, an instability fault can be judgedonly through extracting t