Stability issues with network Impedances & its mitigation in Islanded Microgrids
- The paper presents the effect of network impedances on the transient stability of Low Voltage (LV) microgrids intended for islanded operation. A simulation model is developed using simplified models of Distributed Generations (DGs). These simplified models are used to simulate electrical (excluding switching) as well as control dynamics for each DG to setup and facilitate system level simulations [1]–[3]. The paper focuses on the operation of DGs in grid forming mode using a droop based primary control. This approach is applied on a real microgrid which is set up within the pebbles research project framework. These DGs are connected through cable impedances to a resistive load bank at the point of common coupling (PCC). The effect of varying individual impedances between DGs and PCC under loading conditions on the microgrid stability is investigated. The location of load between DGs and its impact is also discussed. Finally, a control modification utilizing concept of virtual impedances (VIs) in Voltage Source Inverters (VSI) isThe paper presents the effect of network impedances on the transient stability of Low Voltage (LV) microgrids intended for islanded operation. A simulation model is developed using simplified models of Distributed Generations (DGs). These simplified models are used to simulate electrical (excluding switching) as well as control dynamics for each DG to setup and facilitate system level simulations [1]–[3]. The paper focuses on the operation of DGs in grid forming mode using a droop based primary control. This approach is applied on a real microgrid which is set up within the pebbles research project framework. These DGs are connected through cable impedances to a resistive load bank at the point of common coupling (PCC). The effect of varying individual impedances between DGs and PCC under loading conditions on the microgrid stability is investigated. The location of load between DGs and its impact is also discussed. Finally, a control modification utilizing concept of virtual impedances (VIs) in Voltage Source Inverters (VSI) is proposed to improve the transient stability of the discussed microgrid.…
Author: | Nauman Beg, Helmuth Biechl, Argo RosinORCiD |
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Identifier: | 978-3-8007-5152-5 OPAC HS OPAC extern |
Identifier: | 978-3-8007-5153-2 OPAC HS OPAC extern |
Parent Title (English): | NEIS 2019 Conference on Sustainable Energy Supply and Energy Storage Systems |
Publisher: | VDE |
Place of publication: | Berlin |
Editor: | Detlef Schulz |
Document Type: | conference proceeding (article) |
Conference: | NEIS 2019 Conference on Sustainable Energy Supply and Energy Storage Systems, 19 – 20 September 2019, Hamburg, Germany |
Language: | English |
Year of first Publication: | 2019 |
Number of pages: | 6 Seiten |
First Page: | 189 |
Last Page: | 194 |
Institutes: | Fakultät Elektrotechnik |
IEES - Institut für Elektrische Energiesysteme | |
Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften / 60 Technik |
6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften | |
Research focus: | FSP1: Energie |
Publication Lists: | Biechl, Helmuth |
Publication reviewed: | begutachtet |
Release Date: | 2021/02/01 |