Publication: Contribution of wind farms to the stability of power systems with high penetration of renewables
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2021-04-02
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MDPI
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Abstract
Power system inertia is being reduced because of the increasing penetration of renewable energies, most of which use power electronic interfaces with the grid. This paper analyses the contribution of inertia emulation and droop control to the power system stability. Although inertia emulation may appear the best option to mitigate frequency disturbances, a thorough analysis of the shortcomings that face real-time implementations shows the opposite. Measurement noise and response delay for inertia emulation hinder controller performance, while the inherently fast droop response of electronic converters provides better frequency support. System stability, expressed in terms of rate of change of frequency (ROCOF) and frequency nadir, is therefore improved with droop control, compared to inertia emulation.
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This article belongs to the Special Issue Modeling and Control of Wind Energy Conversion Systems.
Keywords
Droop control, Fast frequency response, Inertia emulation, Renewable energy, Wind power systems
Bibliographic citation
Castro Martinez, J., Arnaltes, S., Alonso-Martinez, J. & Rodriguez Amenedo, J. L. (2021). Contribution of Wind Farms to the Stability of Power Systems with High Penetration of Renewables. Energies, 14(8), 2207.