|European Union Electricity Market Glossary|
Alert State is the System State where the system is within Operational Security Limits, but a Contingency from the Contingency List has been detected, for which in case of occurrence, the available Remedial Actions are not sufficient to keep the Normal State (Article 3(2)(17) of the Network Code on System Operation).
The criteria to be used by the Transmission System Operator (TSO) when classifying the System State of its Transmission System as Alert State are as follows:
ii. at least one of the following conditions is fulfilled:
a. Active Power Reserve requirements are not fulfilled with lack of more than 20% of the required amount of any of the following reserves: FCR, FRR and RR according to the dimensioning in the Network Code on System Operation for more than 30 minutes and with no means to replace them;
b. frequency is within the frequency limits for the Alert State as defined in the Network Code on System Operation;
c. at least one Contingency from the Contingency List defined can lead to deviations from Operational Security Limits, even after effects of Remedial Actions.
Network Code on System Operation, Article 18(2), Article 3(2)(17)
|Last Updated on Monday, 04 September 2017 20:29|