Frequency-dependent primary control of the active power

The characteristic curve in the ActiveByPrimary parameter adjusts the active power of the power generating plant depending on the grid frequency. This function must be implemented in accordance with VDE standards. Control is based on the ActiveByPrimary parameter group and is enabled by the ActiveByPrimaryEnable parameter (see ActiveByPrimary).

In the EN standards, this operation mode is also referred to as Frequency Sensitivity Mode (FSM).

The associated characteristic curve forms a frequency-dependent demand response using the ActiveByPrimaryDroop parameter with the configurable deadband around the nominal frequency using the ActiveByPrimaryDeadband parameter. By default, the deadband is pre-set to ±10 mHz in order to map the required insensitivity of 10 mHz.