TY - JOUR
T1 - Tertiary Control of Voltage Unbalance Compensation for Optimal Power Quality in Islanded Microgrids
AU - Meng, Lexuan
AU - Tang, Fen
AU - Savaghebi, Mehdi
AU - Vasquez, Juan Carlos
AU - Guerrero, Josep M.
PY - 2014/12
Y1 - 2014/12
N2 - In multi-bus islanded microgrids, the power quality requirements for different areas and buses can be different. This paper proposes a hierarchical control to realize optimal unbalance compensation for satisfying the power quality requirements in different areas. Primary and secondary controllers are applied to realize unbalance compensation for critical bus (CB) and at the same time, to make distributed generators (DGs) equally share the compensation efforts. Tertiary control, which inherently is an optimization method, is implemented to adjust the compensating effort of each DG considering the voltage unbalance limits in local buses and DG terminals. This method realizes multi-power-quality-level control in a multi-bus islanded system by optimally utilizing DGs as distributed compensators and saves the investment for additional compensation equipment. Hardware-in-the-loop results demonstrate the effectiveness of the method.
AB - In multi-bus islanded microgrids, the power quality requirements for different areas and buses can be different. This paper proposes a hierarchical control to realize optimal unbalance compensation for satisfying the power quality requirements in different areas. Primary and secondary controllers are applied to realize unbalance compensation for critical bus (CB) and at the same time, to make distributed generators (DGs) equally share the compensation efforts. Tertiary control, which inherently is an optimization method, is implemented to adjust the compensating effort of each DG considering the voltage unbalance limits in local buses and DG terminals. This method realizes multi-power-quality-level control in a multi-bus islanded system by optimally utilizing DGs as distributed compensators and saves the investment for additional compensation equipment. Hardware-in-the-loop results demonstrate the effectiveness of the method.
KW - Microgrid
KW - Tertiary control
KW - Voltage unbalance compensation
KW - Multi-power-quality-level
U2 - 10.1109/TEC.2014.2363687
DO - 10.1109/TEC.2014.2363687
M3 - Journal article
SN - 0885-8969
VL - 29
SP - 802
EP - 815
JO - I E E E Transactions on Energy Conversion
JF - I E E E Transactions on Energy Conversion
IS - 4
ER -