I work a lot with islanded generation in that range. And I can tell you for certain is the questions are either simplistic, or have multi-page thesis answers.
How does an Islanded 600-2000MW generating station behave?
With in the limits of the original design - As well as the maintenance pulled on it.
What does typical critical clearing time look like?
Don't know what you are looking for here. The CBs are the same ones used in non-islanded distribution. Although generator SCC are typically low.
What is the voltage and frequency divergence during and after a fault for various fault scenarios?
They go down, then they go up. Unless they went too far and tripped on anyone of a dozen things.
How is active and reactive power dispatched/controlled?
This one baffles me. The load is what it is. The generation has to supply the KW and KVAR the load requires. The generation doesn't control any of this.
If the question is about paralleled small generation:
If it is two paralleled
kw share and kva share
1 Isoc, 1 droop
If more than two paralleled
1 Isoc, N-1 droop
1 swing, N-1 base load
2 KW and Kvar Share, N-2 base load
Varying amounts of operator intervention required
How does generation behave during trip and reclose events?
Some trips open the gen main and leave the driver running. Some trips open the Gen main and also shut down the driver. Depends on the protective relaying.
As for reclose, the relaying should open enough feeders the Genset can be put on-line smoothly. If not, the operators have to load shed.
And how do you "block load"?
I don't even know what this means.
