Revision history [back]

Unfortunately the MAX and MIN limits are not in pu on turbine rating, even if the manual wrongly says that. There are many errors in the manual!

With Pgen=13.7862 MW the speed governor signal (STATE K) is initialised to -0.1842. With your MIN-limit of -0.1 there is a violation of MIN limit and initial conditions suspect for STATE K, K+1 and K+12. State K+5 is normally causing initial conditions suspect but that can be ignored.

With load flow data Pmax=36.1 MW and Pmin=0 MW and your GAST2A parameters you must choose MIN = -0.5285 and MAX = 0.37313 for the speed governor limits in model GAST2A. Please note that the MIN-value is negative, corresponding to a generator power of 0 MW.

I have assumed that Rsource is zero for the generator so there are no generator losses to be considered.