  A new control approach is proposed for the grid insertion of Power Park
Modules (PPMs). It allows full participation of these modules to ancillary
services. This means that, not only their control have some positive impact on
the grid frequency and voltage dynamics, but they can effectively participate
to existing primary and secondary control loops together with the classic
thermal/inertia synchronous generators and fulfill the same specifications both
from the control and contractual points of view. To achieve such level of
performances, a system approach based on an innovatory control model is
proposed. The latter control model drops classic hypothesis for separation of
voltage and frequency dynamics used till now in order to gather these dynamics
into a small size model. From the system point of view, dynamics are grouped by
time-scales of phenomena in the proposed control model. This results in more
performant controls in comparison to classic approaches which orient controls
to physical actuators (control of grid side converter and of generator side
converter). Also, this allows coordination between control of converters and
generator or, in case of multimachines specifications, among several PPMs. From
the control synthesis point of view, classic robust approaches are used (like,
e.g., H-infinity synthesis). Implementation and validation tests are presented
for wind PPMs but the approach holds for any other type of PPM. These results
will be further used to control the units of the new concept of Dynamic Virtual
Power Plant introduced in the H2020 POSYTYF project.
