Model-Free Power Control for Low-Voltage AC Dispatchable Microgrids with Multiple Points of Connection
This paper proposes a modified version of the power-based control (MPBC) applied to microgrids (µGs) with multiple points of connection (i.e., utility grid itself or any other neighboring µG). Using the MPBC, single-phase distributed energy resources (DERs) arbitrarily connected between the phases s...
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MDPI AG
2021-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/19/6390 |
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| author | Geovane dos Reis Eduardo Liberado Fernando Marafão Clodualdo Sousa Waner Silva Danilo Brandao |
| author_facet | Geovane dos Reis Eduardo Liberado Fernando Marafão Clodualdo Sousa Waner Silva Danilo Brandao |
| author_sort | Geovane dos Reis |
| collection | DOAJ |
| description | This paper proposes a modified version of the power-based control (MPBC) applied to microgrids (µGs) with multiple points of connection (i.e., utility grid itself or any other neighboring µG). Using the MPBC, single-phase distributed energy resources (DERs) arbitrarily connected between the phases share the amounts of balanced power, while the unbalanced and homopolar power are steered only to the line-to-neutral inverters. The control technique is based on a three-level hierarchical control using narrow bandwidth, low data rate communication that properly coordinates the DERs connected to three-phase four-wire µGs. The MPBC allows the DERs to steer power flow at any of the multiple points of common coupling of a multi-PCC dispatchable µG. The modified control proposed herein is evaluated through simulation results using MATLAB/SIMULINK considering a real urban distribution grid with typical operational elements and conditions. When compared to the original power-based control (PBC), results show that a meshed µG may reach power benchmarks with accommodation time 80% lower when applying MPBC. Moreover, it may also lead to significant power loss reduction (about of 5%) in some studied cases. |
| first_indexed | 2024-03-10T07:02:49Z |
| format | Article |
| id | doaj.art-5e0a40b388c54d9c8d077b47b8b11f09 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T07:02:49Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-5e0a40b388c54d9c8d077b47b8b11f092023-11-22T16:03:40ZengMDPI AGEnergies1996-10732021-10-011419639010.3390/en14196390Model-Free Power Control for Low-Voltage AC Dispatchable Microgrids with Multiple Points of ConnectionGeovane dos Reis0Eduardo Liberado1Fernando Marafão2Clodualdo Sousa3Waner Silva4Danilo Brandao5Instituto de Ciências Tecnológicas (ICT), Campus Itabira, Universidade Federal de Itajubá (UNIFEI), Itabira 35903-087, BrazilCampus of Rosana, São Paulo State University (UNESP), Rosana 19273-000, BrazilCampus of Sorocaba, São Paulo State University (UNESP), Sorocaba 18087-180, BrazilInstituto de Ciências Tecnológicas (ICT), Campus Itabira, Universidade Federal de Itajubá (UNIFEI), Itabira 35903-087, BrazilInstituto de Ciências Tecnológicas (ICT), Campus Itabira, Universidade Federal de Itajubá (UNIFEI), Itabira 35903-087, BrazilGraduate Program in Electrical Engineering, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, BrazilThis paper proposes a modified version of the power-based control (MPBC) applied to microgrids (µGs) with multiple points of connection (i.e., utility grid itself or any other neighboring µG). Using the MPBC, single-phase distributed energy resources (DERs) arbitrarily connected between the phases share the amounts of balanced power, while the unbalanced and homopolar power are steered only to the line-to-neutral inverters. The control technique is based on a three-level hierarchical control using narrow bandwidth, low data rate communication that properly coordinates the DERs connected to three-phase four-wire µGs. The MPBC allows the DERs to steer power flow at any of the multiple points of common coupling of a multi-PCC dispatchable µG. The modified control proposed herein is evaluated through simulation results using MATLAB/SIMULINK considering a real urban distribution grid with typical operational elements and conditions. When compared to the original power-based control (PBC), results show that a meshed µG may reach power benchmarks with accommodation time 80% lower when applying MPBC. Moreover, it may also lead to significant power loss reduction (about of 5%) in some studied cases.https://www.mdpi.com/1996-1073/14/19/6390dispatchable microgridsmulti-PCC microgridshierarchical controlpower sharing |
| spellingShingle | Geovane dos Reis Eduardo Liberado Fernando Marafão Clodualdo Sousa Waner Silva Danilo Brandao Model-Free Power Control for Low-Voltage AC Dispatchable Microgrids with Multiple Points of Connection Energies dispatchable microgrids multi-PCC microgrids hierarchical control power sharing |
| title | Model-Free Power Control for Low-Voltage AC Dispatchable Microgrids with Multiple Points of Connection |
| title_full | Model-Free Power Control for Low-Voltage AC Dispatchable Microgrids with Multiple Points of Connection |
| title_fullStr | Model-Free Power Control for Low-Voltage AC Dispatchable Microgrids with Multiple Points of Connection |
| title_full_unstemmed | Model-Free Power Control for Low-Voltage AC Dispatchable Microgrids with Multiple Points of Connection |
| title_short | Model-Free Power Control for Low-Voltage AC Dispatchable Microgrids with Multiple Points of Connection |
| title_sort | model free power control for low voltage ac dispatchable microgrids with multiple points of connection |
| topic | dispatchable microgrids multi-PCC microgrids hierarchical control power sharing |
| url | https://www.mdpi.com/1996-1073/14/19/6390 |
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