Grid control is required in order to manage the injection of power into an overloaded, fluctuating or unbalanced grid. There can be any number of causes for this but with renewables often being weather dependent and limitations within the grid infrastructure itself to transport power, Grid Control is becoming a high priority amongst grid and network operators.
Distributed bulk power systems feed into an electricity grid which originally was designed for centralized, top-down electricity distribution and supply.
Grid security management measures
Decentralized grid stability measures