REAL-TIME SIMULATOR FOR POWER-SYSTEM DYNAMICS STUDIES

The addition of dynamic models of loads, machines and sub-transmission networks to the existing three-phase real-time simulator of Hydro-Que bec (IREQ), has made available a tool appropriate for the study of pow er system dynamics in real time. The valid frequency range of the simu lator, which already covered harmonics up to 2000 Hz, has been extende d to include machine dynamics in the region of less than 1 Hz. The pap er describes the models added and also presents some results of the in tergration of these dynamic models, showing how they compare favorably with equivalent results obtained using a transient stability simulati on program.