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Operation and control of a hybrid microgrid containing unbalanced and nonlinear loads

Sahania, Farhad, Majumder, Ritwik, Ghosh, Arindam, Ledwich, Gerard, & Zare, Firuz (2010) Operation and control of a hybrid microgrid containing unbalanced and nonlinear loads. Electric Power Systems Research, 80(8), pp. 954-965.

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Abstract

This paper shows how the power quality can be improved in a microgrid that is supplying a nonlinear and unbalanced load. The microgrid contains a hybrid combination of inertial and converter interfaced distributed generation units where a decentralized power sharing algorithm is used to control its power management. One of the distributed generators in the microgrid is used as a power quality compensator for the unbalanced and harmonic load. The current reference generation for power quality improvement takes into account the active and reactive power to be supplied by the micro source which is connected to the compensator. Depending on the power requirement of the nonlinear load, the proposed control scheme can change modes of operation without any external communication interfaces. The compensator can operate in two modes depending on the entire power demand of the unbalanced nonlinear load. The proposed control scheme can even compensate system unbalance caused by the single-phase micro sources and load changes. The efficacy of the proposed power quality improvement control and method in such a microgrid is validated through extensive simulation studies using PSCAD/EMTDC software with detailed dynamic models of the micro sources and power electronic converters

Impact and interest:

39 citations in Scopus
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25 citations in Web of Science®

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ID Code: 31176
Item Type: Journal Article
Keywords: Microgrid, Power Quality, Power Sharing, Micro Source, Nonlinear Load
DOI: 10.1016/j.epsr.2010.01.005
ISSN: 0378-7796
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Renewable Power and Energy Systems Engineering (excl. Solar Cells) (090608)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2010 Elsevier
Deposited On: 09 Mar 2010 15:25
Last Modified: 07 Mar 2012 18:48

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