Conductance-frequency droop control to ensure transient stability of inverter-based stand-alone microgrids

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dc.contributor.authorErdocia Zabala, Ioseba
dc.contributor.authorUrtasun Erburu, Andoni
dc.contributor.authorMarroyo Palomo, Luis
dc.contributor.departmentIngeniería Eléctrica, Electrónica y de Comunicaciónes_ES
dc.contributor.departmentIngeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzareneu
dc.contributor.funderUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoaes
dc.date.accessioned2023-02-07T09:10:03Z
dc.date.available2023-02-07T09:10:03Z
dc.date.issued2023
dc.date.updated2023-02-07T08:58:06Z
dc.description.abstractCurrently, inverter-based stand-alone microgrids are gaining interest due to the advantages of obtaining energy from renewable sources. To manage the operation, these microgrids include storage systems connected in par- allel to the PCC through electronic inverters that are controlled as voltage sources in order to support the fre- quency and voltage at the PCC. For the purpose of ensuring P and Q sharing among inverters and also the synchronization stability of the microgrid, droop control is widely used, achieving a satisfactory performance in normal operation. Nevertheless, in the presence of overloads or short-circuits, the inverters must limit the current for self-protection, thereby modifying the performance of the system that then becomes prone to suffer transient stability problems. In this paper, first the performance of the inverter-based stand-alone microgrids with the conventional P-f and Iact-f droops is analyzed, obtaining the stability boundaries during current limitation. In order to always ensure the synchronization stability of the system, this paper then proposes the G-f droop that consists in employing the equivalent conductance seen by each inverter for its frequency droop control. Furthermore, as this variable always correctly represents the inverter power angle, the system dynamics are not affected by the operating conditions. The theoretical results have been validated by means of simulation and Hardware-In-the-Loop results, showing the superior performance of the proposed G-f droopen
dc.description.sponsorshipThis work has been supported by the Spanish State Research Agency (AEI) under grant PID2019-110956RB-I00/AEI/ 10.13039/501100011033, and by the Public University of Navarre through a PhD scholarship. Open access funding provided by Public University of Navarre.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationErdocia, J., Urtasun, A., & Marroyo, L. (2023). Conductance-frequency droop control to ensure transient stability of inverter-based stand-alone microgrids. International Journal of Electrical Power & Energy Systems, 144, 108562. https://doi.org/10.1016/j.ijepes.2022.108562en
dc.identifier.doi10.1016/j.ijepes.2022.108562
dc.identifier.issn0142-0615
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/44663
dc.language.isoengen
dc.publisherElsevieren
dc.relation.ispartofInternational Journal of Electrical Power & Energy Systems 144 (2023) 108562en
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-110956RB-I00/ES/
dc.relation.publisherversionhttps://doi.org/10.1016/j.ijepes.2022.108562
dc.rights© 2022 The Authors. This is an open access article under the CC BY-NC-ND license.en
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectInverter-based microgridsen
dc.subjectDroop controlen
dc.subjectCurrent limitationen
dc.subjectOverloadsen
dc.subjectShort-circuitsen
dc.titleConductance-frequency droop control to ensure transient stability of inverter-based stand-alone microgridsen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublication2fd3010c-d65f-4635-8759-e18f24b5a78a
relation.isAuthorOfPublication7cedc40b-6b94-46fc-951c-536223530127
relation.isAuthorOfPublicationa68eb3e8-cf0e-4b2b-952b-d419a42a5f8c
relation.isAuthorOfPublication.latestForDiscovery2fd3010c-d65f-4635-8759-e18f24b5a78a

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