[RE-wrenches] AC Coupling Situation

[Jeremy Rodriguez- All Solar Inc.]

Wrenches,
Here is my situation:  GT string inverter - 3 strings of mods, 10KW DC. We need to reduce the PV when the grid is down as to not overload the AC coupled inverters.  
Is there a good way to limit PV input like shunt off some power or short part of the array? (part)
I was first thinking of dropping off 2 of the three strings, but that would not leave enough input for the critical loads. 
Has anyone done such a thing?

Jeremy
All Solar
CO- USA  
Sent via BlackBerry. Sorry for typos and shorthand!