Hi, I remember that most turbine(wind) based distribution feeders are simulated with either Phasor or EMTP type simulation.
The main problem is that phasor simulate with a time-step around 1ms and EMTP simulation around 1µs. so if you use a phasor simulation, and supply a value every 1µs for the discrete EMTP simulation, it might simulate something similar to continuous.
However, Post the question to Mathworks forum and also looking into the Mathworks documentation carefully might give you some clue: https://uk.mathworks.com/help/physmod/sps/powersys/ref/powergui.html