Fuzzy recognition of power system transient stability

A fuzzy recognition approach to assess power system transient stability is presented by the author. The heuristic selection of primary variables gets rid of time-consuming offline computation. The approximate computation of system dynamic energy at the fault clearing time greatly enhances the computing speed but does not influence the correctness of the recognition results. An approach to recognise the power system machine that will first lose synchronism from other system machines is presented. This method is proved in a test system with 3 generators and 6 buses