In the connected mode, exchange of active and reactive
power with the utility is to be kept close to zero. The P/f
algorithm measures the active power flowing through the
utility transformers and calculates what the total generation
should be in order to keep this value close to zero. The P/f
algorithm also checks the correct sharing of load among the
turbines taking into account DLN operation constraints. Based
on these 2 sets of values (total power required and load
sharing) the PMS calculates and sends the set point
adjustments to each turbine. These algorithms are executed
continuously and ensure correct steady-state operation.