Publication type: Conference paper
Type of review: Peer review (publication)
Title: A small-signal stability index for power system dynamic impact assessment using time-domain simulations
Authors: Segundo Sevilla, Felix Rafael
Vanfretti, Luigi
DOI: 10.1109/PESGM.2014.6938842
Proceedings: 2014 IEEE PES General Meeting | Conference & Exposition
Conference details: IEEE PES General Meeting, National Harbor, USA, 27-31 July 2014
Issue Date: 2014
Publisher / Ed. Institution: IEEE
ISBN: 978-1-4799-6415-4
Language: English
Subjects: Small-signal stability; Ringdown; Time-domain simulations; Severity index
Subject (DDC): 
Abstract: 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 predefined 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.
URI: https://digitalcollection.zhaw.ch/handle/11475/13431
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Institute of Energy Systems and Fluid Engineering (IEFE)
Appears in collections:Publikationen School of Engineering

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