The disconnection from power network of power plants under emergency conditions may cause serious frequencydrop and then large area outage, even power network collapse.
Underfrequency load shedding (UFLS) is a widely accepted effective measure to repress further frequencydrop. Most of UFLS schemes use pre specified steps based on measured frequency to shed load.
Of course, the frequency of new words used drops off in longer novels, but the patterns of the drop-off differed and were specific to each of the three authors.