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Coordination of distributed resources for frequency support provision in microgrids

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IIT-22-181WP.pdf (710.5Kb)
Autor
Morán Río, Diana Patricia
Anta Martínez, Adolfo
Roldan Perez, Javier
Prodanovic, Milan
García Cerrada, Aurelio
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info:eu-repo/semantics/draft
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Resumen
 
 
To address the reduction of system inertia, transmis-sion system operators are now requesting converter-interfaced generators (CIGs) to participate in frequency support services. Microgrids (MGs) and virtual power plants (VPPs) have been used as a solution for aggregation of small CIGs. It has been recently considered they may use their combined actions to provide the frequency services. However, these proposals are not general enough, focusing on specific CIGs controllers and, in many cases, stability and operational limits are not taken into account. This paper presents an standardized methodology to design MG controllers that are in compliance with the MG transient response specifications (frequency nadir and rate-of-change-of-frequency, RoCoF). The methodology has an iterative nature and can be applied when the network conditions change. In each iteration of the methodology, the control parameters are adjusted based on the sensitivity of the system eigenvalues against the frequency metrics of interest while stability and operational constraints are respected. The proposed methodology is applied to controller design of a benchmark MG. Results show that both nadir and RoCoF can be effectively modified and set as required. The methodology was validated by using a real MG comprising four 15 kW converters and one 75 kW converter.
 
URI
http://hdl.handle.net/11531/87234
Coordination of distributed resources for frequency support provision in microgrids
Palabras Clave

Microgrid, inertia, grid-forming, nadir, RoCoF, small-signal analysis.
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Repositorio de la Universidad Pontificia Comillas copyright © 2015  Desarrollado con DSpace Software
Contacto | Sugerencias