Comparison of Control Strategies to Realize Synthetic Inertia in Converters

Jürgen Marchgraber, Christian Alács, Yi Guo, Wolfgang Gawlik, Adolfo Anta, Alexander Stimmer, Martin Lenz, Manuel Froschauer and Michaela Leonhardt
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Jürgen Marchgraber: Institute of Energy Systems and Electrical Drives, TU Wien, 1040 Vienna, Austria
Christian Alács: Institute of Energy Systems and Electrical Drives, TU Wien, 1040 Vienna, Austria
Yi Guo: Institute of Energy Systems and Electrical Drives, TU Wien, 1040 Vienna, Austria
Wolfgang Gawlik: Institute of Energy Systems and Electrical Drives, TU Wien, 1040 Vienna, Austria
Adolfo Anta: Center for Energy, Austrian Institute of Technology, 1210 Vienna, Austria
Alexander Stimmer: Austrian Power Grid, 1220 Vienna, Austria
Martin Lenz: Austrian Power Grid, 1220 Vienna, Austria
Manuel Froschauer: Austrian Power Grid, 1220 Vienna, Austria
Michaela Leonhardt: Austrian Power Grid, 1220 Vienna, Austria

Energies, 2020, vol. 13, issue 13, 1-21

Abstract: The increasing amount of renewable energy sources in the electrical energy system leads to an increasing number of converter-based generators connected to the electrical power grid. Other than conventional power plants that are often connected to the grid via synchronous generators, converter-based generators do not provide mechanical inertia intrinsically. Therefore, ensuring frequency stability in the electrical power grid might become even more difficult in the future. With the concept of synthetic inertia, the converter-based generators partially imitate the behavior of conventional generators. By implementing such a concept in converters, they are capable of contributing to frequency stability as well. This paper compares two strategies to realize synthetic inertia by modeling converter-based generators in MATLAB/SIMULINK and simulating their behavior in a small Microgrid. The results prove that any kind of realization of synthetic inertia helps to improve frequency stability. Each of the two investigated strategies may have their scope of application in a future electrical energy system.

Keywords: converter; synthetic inertia; frequency stability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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