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Energies 2016, 9(5), 372;

Black Start Strategy for PV-ESS Multi-Microgrids with Three-Phase/Single-Phase Architecture

School of Electric Power, South China University of Technology, Guangzhou 510640, China
Guangdong Key Laboratory of Clean Energy Technology, Guangzhou 511458, China
National-Local Joint Engineering Laboratory for Wind Power Control and Integration Technology, South China University of Technology, Guangzhou 511458, China
Author to whom correspondence should be addressed.
Academic Editor: Josep M. Guerrero
Received: 19 March 2016 / Revised: 17 April 2016 / Accepted: 4 May 2016 / Published: 16 May 2016
(This article belongs to the Special Issue Microgrids 2016)
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With the rapid development of microgrids (MGs) in recent years, it is anticipated that combinations of multiple microgrids—multi-microgrids (MMGs)—will gradually become a new form of power grid. A safe and efficient black start strategy for MMGs is in urgent demand because of their complicated structure and control systems. In this paper, first, we analyze the topology and control system of residential-type MMGs with three-phase/single-phase (TP/SP) architecture. Second, a black start strategy based on a hierarchical control scheme is presented, including the selection strategy for the main power supply and master microgrid, the stand-alone operation strategy, and the grid-connected operation strategy. After the selection of the main power supplies, the master MG is determined. Hereby, all sub-microgrids (SMGs) execute the stand-alone algorithm. When the synchronous connection condition is satisfied, the slave SMGs connect to the master MG who provides the voltage and frequency support. Meanwhile, the control algorithm transfers to the grid-connected algorithm, with the grid dispatching value set to zero. Finally, experimental results from the MMG experimental setup in the Clean Energy Technology Laboratory (CETLAB) are presented to verify the effectiveness and feasibility of the proposed black start strategy. View Full-Text
Keywords: multi-microgrids; black start; hierarchical control; distributed restoration multi-microgrids; black start; hierarchical control; distributed restoration

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Xu, Z.; Yang, P.; Zeng, Z.; Peng, J.; Zhao, Z. Black Start Strategy for PV-ESS Multi-Microgrids with Three-Phase/Single-Phase Architecture. Energies 2016, 9, 372.

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