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“Grid”-Less Power Systems: A Vision for Future Structure of Power Networks

Meghdad Fazeli Orcid Logo, Paul Holland, MUFTAU BARUWA

IEEE Access, Volume: 8, Pages: 159120 - 159131

Swansea University Authors: Meghdad Fazeli Orcid Logo, Paul Holland, MUFTAU BARUWA

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DOI (Published version): 10.1109/access.2020.3020455

Abstract

This paper proposes a new paradigm in the structure of power systems to facilitate the large scale move to renewables-based distributed generation necessary to help decarbonize the current electricity networks. Since the design of the incumbent power system topologies is to control large synchronous...

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Published in: IEEE Access
ISSN: 2169-3536 2169-3536
Published: 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55089
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first_indexed 2020-08-27T11:05:41Z
last_indexed 2021-01-16T04:17:54Z
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spelling 2021-01-15T10:22:30.3998701 v2 55089 2020-08-27 “Grid”-Less Power Systems: A Vision for Future Structure of Power Networks b7aae4026707ed626d812d07018a2113 0000-0003-1448-5339 Meghdad Fazeli Meghdad Fazeli true false 9c7eea4ea9d615fcbf2801a672dd2e7f Paul Holland Paul Holland true false 5aba0d15289bfb919d74e37f1b7b5e2a MUFTAU BARUWA MUFTAU BARUWA true false 2020-08-27 EEEG This paper proposes a new paradigm in the structure of power systems to facilitate the large scale move to renewables-based distributed generation necessary to help decarbonize the current electricity networks. Since the design of the incumbent power system topologies is to control large synchronous generators, critical control metrics degrade as the penetration of converter-based units increases. Specifically, the reduction in short circuit level, phase angle movement, and rate of change of frequency limit the wider adoption of converter-based units. This paper proposes structural changes and control that inherently solve such critical performance issues through physically decoupling all synchronous generators from the network. A set of back-to-back AC/DC/AC converters controlled by a universal virtual synchronous machine-based control algorithm, introduced in the paper, allows the repurposing of existing plant to enable the integration of more converter-based units. Despite being physically disconnected, this new structure/control still benefits from inertial capacities of synchronous generators to suppress the oscillations caused by disturbances. Moreover, the method enables further exploitation of synchronous generators as energy storage mechanisms. PSCAD/EMTDC simulations demonstrate the advantages of the proposed structure and control system in different normal and abnormal scenarios. Journal Article IEEE Access 8 159120 159131 2169-3536 2169-3536 11 9 2020 2020-09-11 10.1109/access.2020.3020455 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University 2021-01-15T10:22:30.3998701 2020-08-27T12:03:41.4932157 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Meghdad Fazeli 0000-0003-1448-5339 1 Paul Holland 2 MUFTAU BARUWA 3 55089__18323__29c176c9b8a84d1d92755f9f836bdcf5.pdf 55089VoR.pdf 2020-10-05T16:07:13.7666225 Output 1668080 application/pdf Version of Record true This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title “Grid”-Less Power Systems: A Vision for Future Structure of Power Networks
spellingShingle “Grid”-Less Power Systems: A Vision for Future Structure of Power Networks
Meghdad Fazeli
Paul Holland
MUFTAU BARUWA
title_short “Grid”-Less Power Systems: A Vision for Future Structure of Power Networks
title_full “Grid”-Less Power Systems: A Vision for Future Structure of Power Networks
title_fullStr “Grid”-Less Power Systems: A Vision for Future Structure of Power Networks
title_full_unstemmed “Grid”-Less Power Systems: A Vision for Future Structure of Power Networks
title_sort “Grid”-Less Power Systems: A Vision for Future Structure of Power Networks
author_id_str_mv b7aae4026707ed626d812d07018a2113
9c7eea4ea9d615fcbf2801a672dd2e7f
5aba0d15289bfb919d74e37f1b7b5e2a
author_id_fullname_str_mv b7aae4026707ed626d812d07018a2113_***_Meghdad Fazeli
9c7eea4ea9d615fcbf2801a672dd2e7f_***_Paul Holland
5aba0d15289bfb919d74e37f1b7b5e2a_***_MUFTAU BARUWA
author Meghdad Fazeli
Paul Holland
MUFTAU BARUWA
author2 Meghdad Fazeli
Paul Holland
MUFTAU BARUWA
format Journal article
container_title IEEE Access
container_volume 8
container_start_page 159120
publishDate 2020
institution Swansea University
issn 2169-3536
2169-3536
doi_str_mv 10.1109/access.2020.3020455
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 paradigm in the structure of power systems to facilitate the large scale move to renewables-based distributed generation necessary to help decarbonize the current electricity networks. Since the design of the incumbent power system topologies is to control large synchronous generators, critical control metrics degrade as the penetration of converter-based units increases. Specifically, the reduction in short circuit level, phase angle movement, and rate of change of frequency limit the wider adoption of converter-based units. This paper proposes structural changes and control that inherently solve such critical performance issues through physically decoupling all synchronous generators from the network. A set of back-to-back AC/DC/AC converters controlled by a universal virtual synchronous machine-based control algorithm, introduced in the paper, allows the repurposing of existing plant to enable the integration of more converter-based units. Despite being physically disconnected, this new structure/control still benefits from inertial capacities of synchronous generators to suppress the oscillations caused by disturbances. Moreover, the method enables further exploitation of synchronous generators as energy storage mechanisms. PSCAD/EMTDC simulations demonstrate the advantages of the proposed structure and control system in different normal and abnormal scenarios.
published_date 2020-09-11T04:09:03Z
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score 11.013776

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