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A Small-Signal Stability Index for Power System Dynamic Impact Assessment using Time-domain Simulations
KTH, School of Electrical Engineering (EES), Electric Power Systems.
KTH, School of Electrical Engineering (EES), Electric Power Systems.ORCID iD: 0000-0002-4125-1055
2014 (English)In: 2014 IEEE PES GENERAL MEETING - CONFERENCE & EXPOSITIONArticle in journal (Refereed) Published
Abstract [en]

In this paper, a three layer small-signal stability index to assess power system dynamic simulations is presented. The index is calculated from an estimate of the eigenvalues of the system, which are determined using time-series from dynamic simulations. The methodology assumes that no other information about the system (model) is available. In the first layer, which is the main future of the index, a scalar (positive or negative) indicates if any of the modes have a damping ratio less than a pre-defined value. In the second layer, a vector is used to specify which pre-defined damping ratios were violated and finally, in the third layer a matrix is used to retrieve precise information about which mode has violated the pre-defined damping requirements of the system. The proposed index is first illustrated using synthetic data and then the index is validated using simulation data from the KTH-Nordic32 system.

Place, publisher, year, edition, pages
National Category
Energy Systems
URN: urn:nbn:se:kth:diva-164508DOI: 10.1109/PESGM.2014.6938842ISI: 000349551500040ISBN: 978-1-4799-6415-4OAI: diva2:806007
IEEE PES General Meeting, JUL 27-31, 2014, National Harbor, MD

QC 20150417

Available from: 2015-04-17 Created: 2015-04-17 Last updated: 2015-04-17Bibliographically approved

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Segundo Sevilla, Felix RafaelVanfretti, Luigi
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