A set of physics-based support functions that are essential for maintaining the reliable operation of a Power SystemA critical societal System that, in the case of GW-scale gri.... Example applications include supporting Supply-Demand BalanceWhere the amount of Electricity provided by Generation Plant..., Frequency RegulationA generic term for all types of managing the Frequency of th..., Voltage ManagementControl mechanisms that maintain Voltages at different point..., Black StartThe procedure to recover from a total or partial shutdown of... Capability and Contingency Capacity ReserveServices available to be utilised to maintain and/or restore....
The term Essential System ServicesA set of critical physics-based services required to maintai... may be used with reference to or as a synonym of Ancillary Services.