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Buffered-microgrid Structure for Future Power Networks; a Seamless Microgrid Control

Nachat Nasser, Meghdad Fazeli Orcid Logo

IEEE Transactions on Smart Grid, Volume: 12, Issue: 1, Pages: 1 - 1

Swansea University Authors: Nachat Nasser, Meghdad Fazeli Orcid Logo

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DOI (Published version): 10.1109/tsg.2020.3015573

Abstract

This paper proposes a new structure and control scheme for future microgrid-based power system, which is designed to achieve a seamless operation in both islanded and grid-connected modes, while the load is appropriately shared by all units (i.e. renewable sources, energy storage systems and the gri...

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Published in: IEEE Transactions on Smart Grid
ISSN: 1949-3053 1949-3061
Published: Institute of Electrical and Electronics Engineers (IEEE) 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa54908
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first_indexed 2020-08-07T13:52:41Z
last_indexed 2023-01-11T14:33:11Z
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spelling 2022-12-18T09:41:19.7513762 v2 54908 2020-08-07 Buffered-microgrid Structure for Future Power Networks; a Seamless Microgrid Control 16b136c2124c1656004d1fa0616c9b64 Nachat Nasser Nachat Nasser true false b7aae4026707ed626d812d07018a2113 0000-0003-1448-5339 Meghdad Fazeli Meghdad Fazeli true false 2020-08-07 EEN This paper proposes a new structure and control scheme for future microgrid-based power system, which is designed to achieve a seamless operation in both islanded and grid-connected modes, while the load is appropriately shared by all units (i.e. renewable sources, energy storage systems and the grid). The proposed method, which involves physical separation of the microgrid from the grid by using AC/DC/AC converters, ensures safe, secure and seamless operation of both modes. Such a “buffered” structure enables reduction in the transmission losses by reducing the exchanged energy with the grid through using a dead-zone in the control of the buffering AC/DC/AC converter. An inverse-droop control technique has been implemented to control the voltage magnitude and frequency, using current control in the dq-frame. PSCAD/EMTDC software has been used to validate the proposed method through simulating different scenarios. The solution provides a simple, smooth, and communication-free decentralized control for multi-sources microgrids. Moreover, the proposed buffered structure separates the dynamics of the microgrid and the grid, which enables a faster microgrid voltage and frequency control and protects the grid and the microgrid from faults on the other side. Journal Article IEEE Transactions on Smart Grid 12 1 1 1 Institute of Electrical and Electronics Engineers (IEEE) 1949-3053 1949-3061 10 8 2020 2020-08-10 10.1109/tsg.2020.3015573 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2022-12-18T09:41:19.7513762 2020-08-07T14:50:20.8562881 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Nachat Nasser 1 Meghdad Fazeli 0000-0003-1448-5339 2 54908__17882__2fb82ce8f68942aeb17346db9a38bbe1.pdf 54908.pdf 2020-08-07T14:52:35.3431742 Output 2315444 application/pdf Accepted Manuscript true true English
title Buffered-microgrid Structure for Future Power Networks; a Seamless Microgrid Control
spellingShingle Buffered-microgrid Structure for Future Power Networks; a Seamless Microgrid Control
Nachat Nasser
Meghdad Fazeli
title_short Buffered-microgrid Structure for Future Power Networks; a Seamless Microgrid Control
title_full Buffered-microgrid Structure for Future Power Networks; a Seamless Microgrid Control
title_fullStr Buffered-microgrid Structure for Future Power Networks; a Seamless Microgrid Control
title_full_unstemmed Buffered-microgrid Structure for Future Power Networks; a Seamless Microgrid Control
title_sort Buffered-microgrid Structure for Future Power Networks; a Seamless Microgrid Control
author_id_str_mv 16b136c2124c1656004d1fa0616c9b64
b7aae4026707ed626d812d07018a2113
author_id_fullname_str_mv 16b136c2124c1656004d1fa0616c9b64_***_Nachat Nasser
b7aae4026707ed626d812d07018a2113_***_Meghdad Fazeli
author Nachat Nasser
Meghdad Fazeli
author2 Nachat Nasser
Meghdad Fazeli
format Journal article
container_title IEEE Transactions on Smart Grid
container_volume 12
container_issue 1
container_start_page 1
publishDate 2020
institution Swansea University
issn 1949-3053
1949-3061
doi_str_mv 10.1109/tsg.2020.3015573
publisher Institute of Electrical and Electronics Engineers (IEEE)
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
document_store_str 1
active_str 0
description This paper proposes a new structure and control scheme for future microgrid-based power system, which is designed to achieve a seamless operation in both islanded and grid-connected modes, while the load is appropriately shared by all units (i.e. renewable sources, energy storage systems and the grid). The proposed method, which involves physical separation of the microgrid from the grid by using AC/DC/AC converters, ensures safe, secure and seamless operation of both modes. Such a “buffered” structure enables reduction in the transmission losses by reducing the exchanged energy with the grid through using a dead-zone in the control of the buffering AC/DC/AC converter. An inverse-droop control technique has been implemented to control the voltage magnitude and frequency, using current control in the dq-frame. PSCAD/EMTDC software has been used to validate the proposed method through simulating different scenarios. The solution provides a simple, smooth, and communication-free decentralized control for multi-sources microgrids. Moreover, the proposed buffered structure separates the dynamics of the microgrid and the grid, which enables a faster microgrid voltage and frequency control and protects the grid and the microgrid from faults on the other side.
published_date 2020-08-10T04:08:44Z
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score 11.016258

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