ANR-DFG - Appel à projets générique 2020 - DFG

Self-Synchronization in Power Networks with Periodic Dynamics – SyNPiD

Submission summary

Driven by political as well as environmental goals and facilitated by technological advances, the use of renewable energies has steadily increased over the past years. The French government aims at up to 113 GW of installed renewable energy capacity by 2028 - more than double com-pared to 2017. Also, the German government has set out in its current coalition agreement a tar-get share of at least 65% of electric renewable generation by 2030. Though the transition to a low-carbon future is highly desirable, it has tremendous implications for the operation of future power systems. In particular, in alternating current (AC) systems the replacement of synchronous generators with inverter-interfaced devices results in a significant reduction of the available system inertia and can lead to much faster frequency dynamics in the grid. Such inverter-dominated power systems are called low-inertia systems. In order to secure an affordable, efficient and sustainable operation in such systems, novel methodical, robust and flexible control solutions are needed. Motivated by this, the project SyNPiD is devoted to the development of a methodical framework for global analysis and control design in nonlinear dynamical systems, which are periodic in a part of the state coordinates. The latter is an intrinsic property of AC pow-er systems and, due to the periodicity, also leads to the existence of multiple equilibria. By building upon extensive previous joint work of both partners, a unique feature of the proposed re-search methodology is that it explicitly exploits the inherent periodicity of the power system dynamics in order to relax the usual requirements of standard stability analysis and control design methods, such as definiteness of Lyapunov functions, which typically hamper the establishment of global properties for AC power systems. Special emphasis will be given to the stability analysis and controller design for self-synchronizing mechanisms. For an interconnected system self-synchronization means that synchronization occurs without any artificially introduced external signal nor action. The obtained results will form a bridge between innovative theoretical concepts for control synthesis and an important application domain dealing with sustainable and green future energy systems, which are at the core of many European and national scientific initiatives. The consortium is composed by the Chair of Control Systems and Network Control Technology at Brandenburg University of Technology Cottbus-Senftenberg (BTU), Germany, and Valse team of Inria, France, which have a clear complementarity demonstrated by a long-standing, successful collaboration on the project’s subjects. The outcomes of the project exhibit high transfer potential, whose realization, together with the scientific excellence of the obtained results, are the main goals of SyNPiD.

Project coordination

Denis Efimov (Centre de Recherche Inria Lille - Nord Europe)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.


INRIA Centre de Recherche Inria Lille - Nord Europe
BTU Brandenburg University of Technology Cottbus-Senftenberg

Help of the ANR 126,360 euros
Beginning and duration of the scientific project: January 2021 - 36 Months

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