Frequency management procedure
Article 28
1. The frequency management procedure of the restoration plan shall contain a set of measures aiming at restoring system frequency back to the nominal frequency. 2. Each TSO shall activate its frequency management procedure: (a) in preparation of the resynchronisation procedure, when a synchronous area is split in several synchronised regions; (b) in case of frequency deviation in the synchronous area; or (c) in case of re-energisation. 3. The frequency management procedure shall include at least: (a) a list of actions regarding the setting of the load-frequency controller before the appointment of frequency leaders; (b) the appointment of frequency leaders; (c) the establishment of target frequency in case of bottom-up re-energisation strategy; (d) frequency management after frequency deviation; and (e) frequency management after synchronous area split. (f) the determination of the amount of load and generation to be reconnected, taking into account the available active power reserves within the synchronised region in order to avoid major frequency deviations.