Exhaustive Modal Analysis of Interconnected European Power System
Résumé
The interconnected European power system is evolving due to the new extensions and to the systematic integration
of Power Park Modules, i.e., unit or ensemble of units generation electricity (Renewable Energy (RE), Distributed Generation
(DG), etc), which is connected to the grid by power electronics
and FACTS (STATCOM, HVDC,...). As a consequence, the
increase of the size and the emergence of the new oscillatory
modes which involve distant dynamic devices, i.e., of coupling
modes (modes associated to generator/turbine inertia, and modes
associated to Power Park Modules), and of modes related to
various regulations. In this paper, a full scan of European
power system is given. An exhaustive method that determines
all oscillatory modes independently of the system’s order, of the
topology and without a priori knowledge about the system, is
used. The exhaustive method is fully analytic. Indeed, it is based
only on the state-space realisation of any given power system and
does not require operator manipulation like dynamic simulations.
To this end, we quantify and analyse the interaction between
the different inputs/outputs of a given system. This leads to
the identification of classes of coupled dynamic devices of the
power system. Next, starting from a reduced number of classes,
a selective modal analysis method is applied to each class to
put into evidence a good approximation of all oscillatory modes.
Finally, a complete classification of the oscillatory modes found
at the previous stage is provided in terms of the types (interarea, electrical, ...) and their characteristics (oscillation frequency,
damping, participation, ...). 2900 oscillatory modes were found
for the studied model of the European system
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