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Implementation and Stability Study of Dynamic Droop in Islanded Microgrids / Augustine M. Egwebe; Meghdad Fazeli; Petar Igic; Paul M. Holland

IEEE Transactions on Energy Conversion, Volume: 31, Issue: 3, Pages: 821 - 832

Swansea University Author: Holland, Paul

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Abstract

This paper presents a dynamic droop load sharing scheme based on the available generation capacity of the distributed generation (DG) units. Since conventional droop schemes share loads proportional to units' ratings, they suffer from the inability to maintain an efficient operating point when...

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Published in: IEEE Transactions on Energy Conversion
ISSN: 0885-8969 1558-0059
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa31071
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spelling 2016-12-05T12:47:04Z v2 31071 2016-11-14 Implementation and Stability Study of Dynamic Droop in Islanded Microgrids Paul Holland Paul Holland true false 9c7eea4ea9d615fcbf2801a672dd2e7f 0df1d5bd1b6dddacc91b70b2140c3dae OjPSvjUs6fRPdeblcZHTKBXCE6Z9OGBXOD9D5JU4+T4= 2016-11-14 EEN This paper presents a dynamic droop load sharing scheme based on the available generation capacity of the distributed generation (DG) units. Since conventional droop schemes share loads proportional to units' ratings, they suffer from the inability to maintain an efficient operating point when their input renewable power varies, without imposing their new operating point on other connected DGs in the microgrid. This problem is mainly due to the insensitivity of the droop scheme to the varying nature of the renewable resources used, including wind and solar photovoltaic (PV). A control method is proposed for PV systems; however, it is applicable for all types of droop-controlled renewable DG. A stability analysis of the proposed scheme on DG units is also presented to identify theoretical and practical limits. The proposed scheme identifies the dc operating zone of the inverter-based source as irradiance level changes and conditions the droop parameters appropriately for an efficient load sharing based on available generation, while the rating of each unit is also taken into account. The proposed scheme provides energy saving, since energy demand from a local auxiliary generator is reduced. The proposed method is validated using MATLAB/SIMULINK simulations. Journal article IEEE Transactions on Energy Conversion 31 3 821 832 0885-8969 1558-0059 0 0 2016 2016-01-01 10.1109/TEC.2016.2540922 College of Engineering Engineering CENG EEN None None 2016-12-05T12:47:04Z 2016-11-14T18:19:23Z College of Engineering Engineering Augustine M. Egwebe 1 Meghdad Fazeli 2 Petar Igic 3 Paul M. Holland 4
title Implementation and Stability Study of Dynamic Droop in Islanded Microgrids
spellingShingle Implementation and Stability Study of Dynamic Droop in Islanded Microgrids
Holland, Paul
title_short Implementation and Stability Study of Dynamic Droop in Islanded Microgrids
title_full Implementation and Stability Study of Dynamic Droop in Islanded Microgrids
title_fullStr Implementation and Stability Study of Dynamic Droop in Islanded Microgrids
title_full_unstemmed Implementation and Stability Study of Dynamic Droop in Islanded Microgrids
title_sort Implementation and Stability Study of Dynamic Droop in Islanded Microgrids
author_id_str_mv 9c7eea4ea9d615fcbf2801a672dd2e7f
author_id_fullname_str_mv 9c7eea4ea9d615fcbf2801a672dd2e7f_***_Holland, Paul
author Holland, Paul
author2 Augustine M. Egwebe
Meghdad Fazeli
Petar Igic
Paul M. Holland
format Journal article
container_title IEEE Transactions on Energy Conversion
container_volume 31
container_issue 3
container_start_page 821
publishDate 2016
institution Swansea University
issn 0885-8969
1558-0059
doi_str_mv 10.1109/TEC.2016.2540922
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 0
active_str 1
description This paper presents a dynamic droop load sharing scheme based on the available generation capacity of the distributed generation (DG) units. Since conventional droop schemes share loads proportional to units' ratings, they suffer from the inability to maintain an efficient operating point when their input renewable power varies, without imposing their new operating point on other connected DGs in the microgrid. This problem is mainly due to the insensitivity of the droop scheme to the varying nature of the renewable resources used, including wind and solar photovoltaic (PV). A control method is proposed for PV systems; however, it is applicable for all types of droop-controlled renewable DG. A stability analysis of the proposed scheme on DG units is also presented to identify theoretical and practical limits. The proposed scheme identifies the dc operating zone of the inverter-based source as irradiance level changes and conditions the droop parameters appropriately for an efficient load sharing based on available generation, while the rating of each unit is also taken into account. The proposed scheme provides energy saving, since energy demand from a local auxiliary generator is reduced. The proposed method is validated using MATLAB/SIMULINK simulations.
published_date 2016-01-01T05:31:28Z
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score 10.837587