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Stability issues with inverter loads and their control in low inertia islanded microgrids

  • The paper investigates the transient stability issues in islanded microgrids with both grid forming as well as grid following Distributed Generation (DG) units participating in the microgrid. The focus is to identify high frequency stability challenges due to short time transients that generally arise from fast load changes. It is shown that the primary control in DGs, type of load and grid impedances requires significant considerations for transient grid stability. An extended microgrid simulation model with two Battery Storage Systems (BSSs) namely BSS1 and BSS2, a Back-to-back Station (B2B) as well as a resistive load bank is modeled in this regard [1]. The models of these DGs are based on real system components integrated in a real microgrid demonstrator and are simplified to simulate electrical (excluding switching) as well as control dynamics for each DG to setup and facilitate system level simulations [2]. The B2B and BSS1 are operated in grid forming mode (VSI inverter) and the primary control is based on theThe paper investigates the transient stability issues in islanded microgrids with both grid forming as well as grid following Distributed Generation (DG) units participating in the microgrid. The focus is to identify high frequency stability challenges due to short time transients that generally arise from fast load changes. It is shown that the primary control in DGs, type of load and grid impedances requires significant considerations for transient grid stability. An extended microgrid simulation model with two Battery Storage Systems (BSSs) namely BSS1 and BSS2, a Back-to-back Station (B2B) as well as a resistive load bank is modeled in this regard [1]. The models of these DGs are based on real system components integrated in a real microgrid demonstrator and are simplified to simulate electrical (excluding switching) as well as control dynamics for each DG to setup and facilitate system level simulations [2]. The B2B and BSS1 are operated in grid forming mode (VSI inverter) and the primary control is based on the classical droop control to regulate output voltage and frequency. The BSS2 is operated in grid following mode (CSI inverter) and emulates a prosumer with a primary control that regulates BSS output active and reactive power. The microgrid has no secondary microgrid controller and the microgrid stability under islanded operation is exclusively considered in this paper.show moreshow less

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Metadaten
Author:Nauman Beg, Helmuth Biechl, Argo RosinORCiD
DOI:https://doi.org/10.1109/GPECOM49333.2020.9247913
Identifier:9781728162645 OPAC HS OPAC extern
Parent Title (English):Proceedings 2020 IEEE 2nd Global Power, Energy and Communication Conference (IEEE GPECOM2020)
Publisher:IEEE
Place of publication:Izmir
Document Type:conference proceeding (article)
Conference:2020 2nd Global Power, Energy and Communication Conference (GPECOM), 20-23. Oct. 2020, Izmir, Turkey
Language:English
Date of Publication (online):2020/11/09
Year of first Publication:2020
Tag:Inselnetze
Volume:2019
Number of pages:6 Seiten
First Page:196
Last Page:201
Institutes:Fakultät Elektrotechnik
IEES - Institut für Elektrische Energiesysteme
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften
Research focus:FSP1: Energie
Publication Lists:Biechl, Helmuth
Publication reviewed:begutachtet
Release Date:2021/02/01
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