Operational situations

Operational situations describe various situations which might occur in the power system.

A number of parameters are assessed in terms of their compliance with set limits: voltage value, frequency value, power system imbalance, ACE (Area Control Error), short circuit strength and power line load, as well as the fulfilment of the N-1 criterion.

If any of these parameters exceed the set limits, the Control Centre must take appropriate action in order to restore system balance.