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

Zhirong Xu, Ping Yang, Zhiji Zeng, Jiajun Peng and Zhuoli Zhao
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Zhirong Xu: School of Electric Power, South China University of Technology, Guangzhou 510640, China
Ping Yang: School of Electric Power, South China University of Technology, Guangzhou 510640, China
Zhiji Zeng: School of Electric Power, South China University of Technology, Guangzhou 510640, China
Jiajun Peng: School of Electric Power, South China University of Technology, Guangzhou 510640, China
Zhuoli Zhao: School of Electric Power, South China University of Technology, Guangzhou 510640, China

Energies, 2016, vol. 9, issue 5, 1-14

Abstract: 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.

Keywords: multi-microgrids; black start; hierarchical control; distributed restoration (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 references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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