STREAM FI01_11 FCR Log

This data set contains the information that is collected during an active bid when monitoring the grid frequency. Each second a new entry is creatd for each service. The data has been obtained during tests with real load which lasted 12 days. 3 apartments have been used for FCR-D-up and 5 apartments for FCR-D-down. There is a separate file for each day for each service. Each file has the following fields: DateTime: Timestamp in UTC in the format yyyymmddThhmmss,xxx ContStatus_FcrdUp, ContStatus_FcrdDo: Status FCR-D up / FCR-D down [on/off] – It is triggered on when the system starts to monitor the frequency Contmode_FcrdUp, Contmode_FcrdDo: Alphanumeric identifier containing the used flex group name Baseline: Power baseline in MW (negative value for consumption) Pmax: Maximum power of the reserve (0 MW if all heaters can be turned off) Pmin: Minimum power of the reserve in MW (total consumption if all the controllers and all the heaters are "online") GridFreq: Grid frequency ApplFreqSig: Applied frequency (used only during testing when using simulated frequency sources) Cap_FcrdUp, Cap_FcrdDo: Maintained flexible capacity (reserved capacity) in MW: it can be different from the sold capacity in the bid due to incorrect baseline calculation ContOutSig: Reserve activation ratio (from 0 to 1): how much maintained capacity has been activated InsAcPow: Instantaneous active power injection in MW (negative value for absorbed power) ConSetP: Setpoint before FCR [MW] - The value of InsActPow before FCR activation Act_FcrdUp, Act_FcrdDo: Activated power (the difference between the current instantaneous active power and the instantaneous active power just before FCR activation: InsAcPow – ContSetP) RegStr_FcrdUp, RegStr_FcrdDo: Regulating strength (maintained capacity / frequency range) Pavailable: The maximum active power that could be consumed under the current conditions (Pmin minus heaters which are not allowed to be used in flex at the moment minus heaters which cannot be controlled currently). Calculated value. This data set is used in the use case FI_01 Using apartments’ explicit flexibility for FCR-D ancillary services. The file named Simu_FcrdDo_20260813 has been produced by using simulated load up to 1MW, showing how the system scales. The log contains 7 activation/deactivation events. The last activation events continues on the log of the following day. In all the cases the frequency deviation is modest (50.125 Hz) requiring only 16% of the reserved capacity (0.4/0.025). There are frequency deviations during the day for overall 64 seconds. The longest frequency deviation lasts 28 seconds. Out of the 6 FCR activation/deactivation cycles that happens during this day, only 3 of them (50%) have a full activation procedure and only 5 have a full deactivation procedure (that is, a procedure during which the grid frequency does not go back to the normal frequency range). The KPIs for the full activation events are all 1 showing that the system is able to cope with fast changing grid frequency also when handling big load.