DOI:10.35833/MPCE.2020.000068 |
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A Review on Primary and Secondary Controls of Inverter-interfaced Microgrid |
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Page view: 133
Net amount: 641 |
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Author:
Kafeel Ahmed1,Mehdi Seyedmahmoudian1,Saad Mekhilef1,2,N. M. Mubarak3,Alex Stojcevski1
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Author Affiliation:
1.School of Software and Electrical Engineering, Swinburne University of Technology, VIC 3122, Victoria, Australia;2.Power Electronics and Renewable Energy Research Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;3.Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University of Technology, 98009 Sarawak, Malaysia
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Abstract: |
The demand of electricity and environmental issues associated with conventional power generation plants are increasing significantly. Modern technology has transformed the conventional power system through the integration of distributed generation (DG). With the help of modern power electronic technology, the conventional power system is able to support the integration of DGs based on renewable energy sources (RESs). The systematic combination of DGs with energy storage system forms a microgrid (MG), which can operate in islanded mode or grid-connected mode. The intermittent nature of RES and varying load pose substantial obstacles such as voltage and frequency instability, and the unreliability of RES. Unequal feeder impedances and non-linear loads are considered as present challenges in MG control. Hierarchical control has been useful in undertaking solutions to these issues. This paper covers the deep insight of different control methods applied at the primary and secondary control levels in hierarchical control. In primary control, the classification based on droop and non-droop controls is discussed. The virtual synchronization machine (VSM) based control method is reviewed. Voltage and frequency restoration control and economical operations at decentralized and centralized secondary control are analyzed in detail. Based on the existing literature, critical discussion on MG control and future trends are also presented to provide future research perspectives. |
Keywords: |
Distributed generation (DG) ; hierarchical control ; droop control ; non-droop control ; inverter |
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Received:February 28, 2020
Online Time:2021/09/28 |
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