Abstract
Direct Current(DC) systems are more efficient than alternating current(AC) systems because of fewer power conversion steps. Furthermore, due to increasing DC-based distributed energy resources(DERs) and loads, studies and applications for DC microgrid(MG) are increasing. Since there is no frequency and reactive power in the DC MG, only voltage control is required in terms of stability. If voltage stability is not taken into consideration, unnecessary power losses increase, and in severe cases, blackout may occur. Hence, voltage control should be required using active power. In this paper, power sharing algorithm for voltage stability in islanded DC multi-microgrid(MMG) system is proposed. The DERs of each single DC MG primarily perform droop control for voltage regulation. If the voltage level cannot be recovered even though droop control is applied, power sharing is performed from neighboring MGs. The amount of power sharing required and the available amount of power sharing are calculated based on droop curve. To verify proposed algorithm, islanded DC multi-MG consisting of two single DC MGs are designed. The simulation results prove the efficiencies of the proposed method.
Original language | English |
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Title of host publication | Proceedings - 2018 53rd International Universities Power Engineering Conference, UPEC 2018 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781538629109 |
DOIs | |
State | Published - 20 Nov 2018 |
Event | 53rd International Universities Power Engineering Conference, UPEC 2018 - Glasgow, United Kingdom Duration: 4 Sep 2018 → 7 Sep 2018 |
Publication series
Name | Proceedings - 2018 53rd International Universities Power Engineering Conference, UPEC 2018 |
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Conference
Conference | 53rd International Universities Power Engineering Conference, UPEC 2018 |
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Country/Territory | United Kingdom |
City | Glasgow |
Period | 4/09/18 → 7/09/18 |
Bibliographical note
Publisher Copyright:© 2018 IEEE.
Keywords
- DC Multi-Microgrid
- Droop-based Control
- Power Sharing
- Voltage Stability