Transient stability assessment method and system based on power flow vector Minfa-based distance

The embodiment of the invention provides a transient stability assessment method and system based on a power flow vector Minkoff base distance. According to the method, on the basis of a transient stability assessment method based on the clustering of the operation conditions, an integrated transient stability assessment method based on a power flow vector Minkoff-based distance is designed by combining a design idea of a current transient stability assessment integrated model. According to the method, the difference of the system transient stability under different working conditions is considered, and a plurality of sub-evaluation models are weighted and integrated according to the similarity of the working conditions, so that the higher the matching degree of the system transient stability is, the larger the influence of the sub-evaluation models on the total evaluation result is. Compared with a single evaluation model, the method has higher generalization, and the evaluation reliability and generalizatio