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Author:

Wang, Ruogu (Wang, Ruogu.) | Wei, Tongjia (Wei, Tongjia.)

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Abstract:

This paper introduces an equivalent negative sequence impedance control method and a negative sequence power-sharing scheme based on adopting virtual negative sequence resistance for the typical islanded microgrids with multiple distributed generation units and unbalanced loads. Firstly, the principle of the method that controls negative sequence components through negative sequence impedance control is discussed. Then a droop relationship between the controlled negative sequence impedance of distributed generations and their remaining power capacity is introduced, which achieves reasonable negative sequence current allocation among different distributed generation units. Moreover, to reduce the fluctuations of system frequency with unbalanced loads, a frequency feedback compensation loop is introduced. Finally, the simulation results verify the effectiveness of the proposed method. © 2020 IEEE.

Keyword:

Distributed power generation Electric fault currents Equivalent circuits HVDC power transmission Microgrids

Author Community:

  • [ 1 ] [Wang, Ruogu]Power Grid and New Energy Technology Lab, State Grid Shaanxi Electric Power Research Institute, Xi'an, China
  • [ 2 ] [Wei, Tongjia]Xi'an Jiaotong University, Xi'an, China

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Year: 2020

Page: 1043-1048

Language: English

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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