The Impact of Frequency Support by Wind Turbines on the Small-Signal Stability of Power Systems

Antonio Pepiciello (), José Luis Domínguez-García and Alfredo Vaccaro
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Antonio Pepiciello: Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, Sant Adria de Besos, 08930 Barcelona, Spain
José Luis Domínguez-García: Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, Sant Adria de Besos, 08930 Barcelona, Spain
Alfredo Vaccaro: Department of Engineering, University of Sannio, Piazza Roma 21, 82100 Benevento, Italy

Energies, 2022, vol. 15, issue 22, 1-20

Abstract: Rising wind energy integration, accompanied by a decreasing level of system inertia, requires additional sources of ancillary services. Wind turbines based on doubly fed induction generators (DFIGs) can provide inertial and primary frequency support when equipped with specific controls. This paper investigates the effect of frequency support provision by DFIGs on the small-signal stability of power systems. To this end, a modified version of the Kundur two-area test system is employed to analyze different scenarios. Wind energy generation is either added to the existing system or displaces part of the synchronous generation. Simulations show that primary frequency support tends to improve the damping of electromechanical oscillations and deteriorate it for converter control-based ones. On the other hand, the inertial response depends on the control parameters.

Keywords: small-signal stability; wind power generation; doubly fed induction generator (DFIG); inertia; transient stability; oscillation damping (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: 2022
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