Which kind of inverters support Micro-grid System?

For Hybrid inverter: X1-Hybrid-G4, X1-Fit-G4 , X3 ULTRA( fit can not be used in pure off-grid enviroment )

For On-grid inverter : Any brand on-grid inverter which support "Response to an Increase of frequency"(p(f)),so as to shut down the on-grid inverter when its power is over a certain limit