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Open AccessArticle

A Building Block Method for Modeling and Small-Signal Stability Analysis of the Autonomous Microgrid Operation

Department of Power Engineering, Faculty of Electronic Engineering, University of Niš, Aleksandra Medvedeva 14, 18115 Niš, Serbia
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Energies 2020, 13(6), 1492; https://doi.org/10.3390/en13061492
Received: 19 February 2020 / Revised: 9 March 2020 / Accepted: 18 March 2020 / Published: 21 March 2020
(This article belongs to the Special Issue Dynamic Modeling of Microgrids)
The task of the whole microgrid state-space matrix creation is usually done in a preferred textual programming language, and it presents a complicated, time-consuming, and error-prone job for a researcher without good coding practices. To ease the modeling task, contribute to the adaptation of new microgrid structures, control algorithms, and devices, and to improve the flexibility of the model, a graphical element building block method is proposed in this paper. With the proposed approach model creation of the whole microgrid is reduced to the creation of the individual element state-space model that is linked with other elements in a logical way with a graphical connection. Elements are then grouped into meaningful wholes and encapsulated with the appropriate graphical user interface that enables easy parameter modification and model complexity change. More detailed DC/DC and DC/AC models of converters than those in the literature concerning microgrid stability are presented in this paper. Those converters are incorporated in a microgrid, whose model is created using the proposed approach in MATLAB/Simulink. The dynamic response examination of the model remains easy, just as with all Simulink models, while for the linear system analysis, a specialized toolbox is used. View Full-Text
Keywords: microgrid modeling; stability analysis; state-space modeling microgrid modeling; stability analysis; state-space modeling
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    Doi: 10.5281/zenodo.3715443
    Link: https://zenodo.org/record/3715443#.XnRmuYhKiUk
    Description:  MIT License    Copyright (c) 2020 Bojan Bankovic   Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:   The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Over and above the legal restrictions imposed by this license, if you use this software for an academic publication then you are obliged to provide proper attribution. This set of files are used in paper A Building Block Method for Modeling and Small-Signal Stability Analysis of the Autonomous Microgrid Operation   authored by: Bojan Banković; Filip Filipović; Nebojša Mitrović; Milutin Petronijević; Vojkan Kostić  and accepted in Energies (ISSN 1996-1073) on 18 March 2020   in the Section Smart Grids and Microgrids and under the Special Issue Dynamic Modeling of Microgrids Content: MicrogridEnergiesParam.mlx  - LiveScript file with the definition of all variables used in simulation; MicrogridEnergiesFULL.slx   - Simulink file that contains the microgrid model built using Simscape and the proposed approach in the paper, applicable for the dynamic response comparison. MicrogridEnergiesSSM.slx    - Simulink file that contains the microgrid model built using the proposed approach, applicable for the Linear Analysis Tool (LAT) analysis. MicrogridEnergiesPF.m       - .m file used for participation factor analysis of the state-space model obtained using LAT. MicrogridEnergiesSVD.m      - .m file used for singular value decomposition analysis of the state-space model obtained using LAT. Instructions for a test use of MicrogridEnergiesFULL.slx: 1) Define all parameters by running MicrogridEnergiesParam.mlx; 2) Open Simulink model MicrogridEnergiesFULL.slx; 3) Run the model and observe dynamic response comparison of the microgrid built using the proposed approach and using the Simscape toolbox through defined Scopes.   Instructions for a test use of MicrogridEnergiesSSM.slx: 1) Define all parameters by running MicrogridEnergiesParam.mlx; 2) Open Simulink model MicrogridEnergiesSSM.slx; 3) Through Analysis -> Control Design -> Linear Analysis... open LAT 4) Draw poles and zeros of the microgrid of interest by selecting the Pole-Zero Map in the LINEARIZE section of the LINEAR ANALYSIS tab. All models are built using MATLAB R2018b (Update 6).
MDPI and ACS Style

Banković, B.; Filipović, F.; Mitrović, N.; Petronijević, M.; Kostić, V. A Building Block Method for Modeling and Small-Signal Stability Analysis of the Autonomous Microgrid Operation. Energies 2020, 13, 1492.

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