Transient and sub-transient reactance of synchronous machine

Hi,

Sub-transient reactance and transient reactance will control the behavior of synchronous machine during short circuit faults. In the synchronous machine models available in PLECS library, the sub-transient reactance and transient reactance are not included in model.

Does that mean such a short circuit faults can not be simulated in PLECS? I am looking for the synchronous machine models which can accept sub-transient reactance and transient reactance also.

Thanks,

Malepati Sankar