Isn't that the problem, that every home device will disconnect at roughly the same time? Leaving the atrophied generators to take up far too much slack.
Embedded generation will firstly displace local load before exporting any power back to the system. If the generation disconnects all you are left with is the load. If the frequency is falling and the ROCOF protection is going to cause the generation to trip, better to trip the load too otherwise the system just gets an increase in load.
