Transient stability studies in SMIB system with detailed machine models

Transient stability assessment of power systems described with detailed models using neural networks

“…As defined in (11), to obtain the TM we need to know the value of FCT for the specified fault scenario. Here, for the two mentioned faults chosen in the two test systems (i.e., Fault 31 Ã -25 and Fault 57 Ã -58), the FCTs are assumed to be 0.15 s and 0.18 s, respectively which are less than their corresponding CCT values in the base case loading conditions.…”

“…However, the main drawback of the previously published works in this area is that most of them are based on the so-called classical model for the power system. However, if accurate and reliable results are needed, it is necessary to consider detailed machines models and take into account their control devices [9][10][11]. This is particularly true in today's power systems in which many electronic devices are employed to increase the stability limits of the system due to difficulty of building new transmission and distribution systems [12,13].…”

“…Although in recent decades significant improvements have been made in the application of TEF and EEAC, these methods become increasingly complex when detailed models are considered [9][10][11][12][13]. Therefore, timedomain simulation is still the most accurate method for transient stability analysis and it can be applied to any level of power system models, but as mentioned before, the main problem of this method is that it is very time consuming.…”

“…)[9,11]. In this model, the generator voltages are assumed constant, only their phase angles change.…”