OEO Ontology

Overview / Open Energy Ontology / Class - frequency control
Label: frequency control

Definition:
Frequency control is a process that regulates the electricity output of an artificial object to maintain the equilibrium between electricity supply and demand.

Sub classes:
Definition:
A primary control is a frequency control that is decentralised and automated. It reacts within seconds to frequency deviations caused by electricity supply and demand imbalances.

Definition:
A secondary control is a frequency control that is centralised and automated. It refers to the control area of one transmission system operator. Secondary control succeeds primary control and operates for several minutes.

Definition:
A tertiary control is a frequency control that is either automated or manual. It takes over from secondary control to equalise electricity supply and demand imbalances that last for more than 15 minutes.

Back to the super classes:
Definition:
p is a process = Def. p is an occurrent that has temporal proper parts and for some time t, p s-depends_on some material entity at t. (axiom label in BFO2 Reference: [083-003])

Editor note:
BFO 2 Reference: The realm of occurrents is less pervasively marked by the presence of natural units than is the case in the realm of independent continuants. Thus there is here no counterpart of ‘object’. In BFO 1.0 ‘process’ served as such a counterpart. In BFO 2.0 ‘process’ is, rather, the occurrent counterpart of ‘material entity’. Those natural – as contrasted with engineered, which here means: deliberately executed – units which do exist in the realm of occurrents are typically either parasitic on the existence of natural units on the continuant side, or they are fiat in nature. Thus we can count lives; we can count football games; we can count chemical reactions performed in experiments or in chemical manufacturing. We cannot count the processes taking place, for instance, in an episode of insect mating behavior.Even where natural units are identifiable, for example cycles in a cyclical process such as the beating of a heart or an organism’s sleep/wake cycle, the processes in question form a sequence with no discontinuities (temporal gaps) of the sort that we find for instance where billiard balls or zebrafish or planets are separated by clear spatial gaps. Lives of organisms are process units, but they too unfold in a continuous series from other, prior processes such as fertilization, and they unfold in turn in continuous series of post-life processes such as post-mortem decay. Clear examples of boundaries of processes are almost always of the fiat sort (midnight, a time of death as declared in an operating theater or on a death certificate, the initiation of a state of war)