Title :
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
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;
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
DOI :
10.1109/SmartGridComm.2011.6102373
