Modeling of Multiple Master–Slave Control under Island Microgrid and Stability Analysis Based on Control Parameter Configuration

Haifeng Liang, Yue Dong, Yuxi Huang, Can Zheng and Peng Li
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Haifeng Liang: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China
Yue Dong: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China
Yuxi Huang: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China
Can Zheng: State Grid Jiaxing Power Supply Company, Jiaxing 314000, China
Peng Li: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China

Energies, 2018, vol. 11, issue 9, 1-18

Abstract: The stable operation of a microgrid is crucial to the integration of renewable energy sources. However, with the expansion of scale in electronic devices applied in the microgrid, the interaction between voltage source converters poses a great threat to system stability. In this paper, the model of a three-source microgrid with a multi master–slave control method in islanded mode is built first of all. Two sources out of three use droop control as the main control source, and another is a subordinate one with constant power control which is also known as real and reactive power (PQ) control. Then, the small signal decoupling control model and its stability discriminant equation are established combined with “virtual impedance”. To delve deeper into the interaction between converters, mutual influence of paralleled converters of two main control micro sources and their effect on system stability is explored from the perspective of control parameters. Finally, simulation and analysis are launched and the study serves as a reference for parameter setting of converters in a microgrid.

Keywords: islanded mode; multi-source microgrid; stability; small-signal model; multiple master–slave control (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: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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