Stability and eigenvalue sensitivity analysis of a BESS model in a microgrid
- In this paper, the small signal stability of a Battery Energy Storage System (BESS) used in a low voltage islanded microgrid is investigated for an ohmic load case using eigenvalue sensitivity analysis. Two approaches namely Quasi Steady State (QSS) and Dynamic Phasor Modeling (DPM) are presented and compared for a reference BESS in a real microgrid. The QSS approach is considered as a traditional method to model system dynamics assuming that they are slow enough to apply steady state rules. The DPM approach on the other hand considers the electrical dynamics in the control feedback loop and the coupling between the parallel inverters. The evaluation of the mathematical models for both approaches as well as simulation and measurement results are presented. The classical QSS stability analysis applied to the BESS does not show the dependency of stability margins on droop parameters, smoothing time constant or load parameters. This problem can be overcome by the presented DPM method. The sensitivity of the BESS and load parameters onIn this paper, the small signal stability of a Battery Energy Storage System (BESS) used in a low voltage islanded microgrid is investigated for an ohmic load case using eigenvalue sensitivity analysis. Two approaches namely Quasi Steady State (QSS) and Dynamic Phasor Modeling (DPM) are presented and compared for a reference BESS in a real microgrid. The QSS approach is considered as a traditional method to model system dynamics assuming that they are slow enough to apply steady state rules. The DPM approach on the other hand considers the electrical dynamics in the control feedback loop and the coupling between the parallel inverters. The evaluation of the mathematical models for both approaches as well as simulation and measurement results are presented. The classical QSS stability analysis applied to the BESS does not show the dependency of stability margins on droop parameters, smoothing time constant or load parameters. This problem can be overcome by the presented DPM method. The sensitivity of the BESS and load parameters on stability limits is studied in detail.…
Author: | Ahmad Rahmoun, Nauman Beg, Helmuth Biechl, Argo RosinORCiD |
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DOI: | https://doi.org/10.1109/ENERGYCON.2018.8398792 |
Identifier: | 978-1-5386-3669-5 OPAC HS OPAC extern |
Parent Title (English): | 2018 IEEE International Energy Conference (ENERGYCON) |
Publisher: | IEEE |
Place of publication: | Limassol |
Document Type: | conference proceeding (article) |
Conference: | 2018 IEEE International Energy Conference (ENERGYCON) 3-7 June 2018, Limassol, Cyprus |
Language: | English |
Date of Publication (online): | 2018/06/28 |
Year of first Publication: | 2018 |
Number of pages: | 6 Seiten |
Institutes: | Fakultät Elektrotechnik |
IEES - Institut für Elektrische Energiesysteme | |
Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften |
Research focus: | FSP1: Energie |
Publication Lists: | Biechl, Helmuth |
Research Project: | IREN2 – Zukunftsfähige Netze für die Integration Regenerativer Energiesysteme |
Publication reviewed: | begutachtet |
Release Date: | 2021/02/01 |