Secondary control for voltage unbalance compensation in an islanded microgrid

Author

Savaghebi, Mehdi ; Guerrero, Josep M. ; Jalilian, Alireza ; Vasquez, Juan C.

Author_Institution

Center of Excellence for Power Syst. Autom. & Oper., Iran Univ. of Sci. & Technol., Tehran, Iran

fYear

2011

fDate

17-20 Oct. 2011

Firstpage

499

Lastpage

504

Abstract

In this paper, the concept of secondary control is applied for voltage unbalance compensation in an islanded microgrid. The aim of the proposed control approach is to enhance the voltage quality at the point of common coupling (PCC). Unbalance compensation is achieved by proper control of distributed generators (DGs). The DGs control structure mainly consists of active and reactive power controllers, virtual impedance loop and voltage and current proportional-resonant controllers. Simulation results are presented for different cases. The results show the effectiveness of the proposed approach in the compensation of voltage unbalance.

Keywords

compensation; distributed power generation; electric current control; reactive power control; voltage control; active power controllers; current proportional-resonant controllers; distributed generators; impedance loop controllers; islanded microgrid; point of common coupling; reactive power controllers; secondary control; voltage controllers; voltage quality enhancement; voltage unbalance compensation; Band pass filters; Control systems; Frequency control; Impedance; Inverters; Reactive power; Voltage control; distributed generation; microgrid; secondary control; voltage unbalance compensation;

fLanguage

English

Publisher

ieee

Conference_Titel

Smart Grid Communications (SmartGridComm), 2011 IEEE International Conference on

Conference_Location

Brussels

Print_ISBN

978-1-4577-1704-8

Electronic_ISBN

978-1-4577-1702-4

Type

conf

DOI

10.1109/SmartGridComm.2011.6102373

Filename

6102373