Power systems with high renewable energy sources: A review of inertia and frequency control strategies over time
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Research GroupIngenieria Electrica y Energias Renovables
Knowledge AreaIngeniería Eléctrica
SponsorsThis work was supported by the Spanish Education, Culture and Sports Ministry [FPU16/04282].
Bibliographic CitationFernández-Guillamón, Ana & Gomez-Lazaro, Emilio & Muljadi, Eduard & Molina-Garcia, Ángel. (2020). Power systems with high renewable energy sources: A review of inertia and frequency control strategies over time.
Power system stability
Renewable energy sources
Traditionally, inertia in power systems has been determined by considering all the rotating masses directly connected to the grid. During the last decade, the integration of renewable energy sources, mainly photovoltaic installations and wind power plants, has led to a significant dynamic characteristic change in power systems. This change is mainly due to the fact that most renewables have power electronics at the grid interface. The overall impact on stability and reliability analysis of power systems is very significant. The power systems become more dynamic and require a new set of strategies modifying traditional generation control algorithms. Indeed, renewable generation units are decoupled from the grid by electronic converters, decreasing the overall inertia of the grid. ‘Hidden inertia’, ‘synthetic inertia’ or ‘virtual inertia’ are terms currently used to represent artificial inertia created by converter control of the renewable sources. Alternative spinning reserves are then ...
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