TY - JOUR
T1 - Secondary Control Scheme for Voltage Unbalance Compensation in an Islanded Droop-Controlled Microgrid
AU - Savaghebi, Mehdi
AU - Jalilian, Alireza
AU - Vasquez, Juan Carlos
AU - Guerrero, Josep M.
PY - 2012
Y1 - 2012
N2 - The concept of microgrid hierarchical control is presented recently. In this paper, a hierarchical scheme is proposed which includes primary and secondary control levels. The primary level comprises distributed generators (DGs) local controllers. The local controllers mainly consist of power, voltage and current controllers, and virtual impedance control loop. The central secondary controller is designed to manage the compensation of voltage unbalance at the point of common coupling (PCC) in an islanded microgrid. Unbalance compensation is achieved by sending proper control signals to the DGs local controllers. The design procedure of the control system is discussed in detail and the simulation results are presented. The results show the effectiveness of the proposed control structure in compensating the voltage unbalance.
AB - The concept of microgrid hierarchical control is presented recently. In this paper, a hierarchical scheme is proposed which includes primary and secondary control levels. The primary level comprises distributed generators (DGs) local controllers. The local controllers mainly consist of power, voltage and current controllers, and virtual impedance control loop. The central secondary controller is designed to manage the compensation of voltage unbalance at the point of common coupling (PCC) in an islanded microgrid. Unbalance compensation is achieved by sending proper control signals to the DGs local controllers. The design procedure of the control system is discussed in detail and the simulation results are presented. The results show the effectiveness of the proposed control structure in compensating the voltage unbalance.
KW - Distributed generator (DG)
KW - Hierarchical control
KW - Microgrid
KW - Secondary control
KW - Voltage unbalance compensation
UR - http://www.scopus.com/inward/record.url?scp=84861894570&partnerID=8YFLogxK
U2 - 10.1109/TSG.2011.2181432
DO - 10.1109/TSG.2011.2181432
M3 - Journal article
SN - 1949-3053
VL - 3
SP - 797
EP - 807
JO - IEEE Transactions on Smart Grid
JF - IEEE Transactions on Smart Grid
IS - 2
ER -