Coordination Control Strategy for AC/DC Hybrid Microgrids in Stand-Alone Mode

Dwi Riana Aryani and Hwachang Song
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Dwi Riana Aryani: Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea
Hwachang Song: Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea

Energies, 2016, vol. 9, issue 6, 1-20

Abstract: Interest in DC microgrids is rapidly increasing along with the improvement of DC power technology because of its advantages. To support the integration process of DC microgrids with the existing AC utility grids, the form of hybrid AC/DC microgrids is considered for higher power conversion efficiency, lower component cost and better power quality. In the system, AC and DC portions are connected through interlink bidirectional AC/DC converters (IC) with a proper control system and power management. In the stand-alone operation mode of AC/DC hybrid microgrids, the control of power injection through the IC is crucial in order to maintain the system security. This paper mainly deals with a coordination control strategy of IC and a battery energy storage system (BESS) converter under stand-alone operation. A coordinated control strategy for the IC, which considers the state of charge (SOC) level of BESS and the load shedding scheme as the last resort, is proposed to obtain better power sharing between AC and DC subgrids. The scheme will be tested with a hybrid AC/DC microgrid, using the tool of the PSCAD/EMTDC software.

Keywords: battery energy storage system; droop control; hybrid AC/DC microgrid; interlink bidirectional AC/DC converter; power management (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (11)

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