TY - JOUR
T1 - Microgrid stability characterization subsequent to fault-triggered islanding incidents
AU - Kasem Alaboudy, A. H.
AU - Zeineldin, H. H.
AU - Kirtley, James
N1 - Funding Information:
Manuscript received February 12, 2011; revised August 04, 2011 and November 22, 2011; accepted December 30, 2011. Date of publication February 17, 2012; date of current version March 28, 2012. This work was supported by the Masdar Institute of Science and Technology. Paper no. TPWRD-00120-2011.
PY - 2012/4
Y1 - 2012/4
N2 - With the growing deployment of microgrids, it has become urgent to investigate the microgrid behavior during transient faults and subsequent islanding conditions. The load type and the manner in which distributed generations (DGs) are controlled can have substantial impacts on the dynamic performance of microgrids. In this paper, impacts of different control schemes of the inverter-based DG and microgrid load types on the microgrid stability subsequent to fault-forced islanding are investigated. A microgrid model, simulated on Matlab/Simulink software, is analyzed including a mix of synchronous and inverter-based DG and a combination of passive RLC and induction motor (IM) loads. Simulation results show that in the presence of IM loads, the microgrid may lose its stable operation even if the fault is isolated within a typical clearing time. The critical clearing time of a microgrid is highly dependent on the microgrid control strategy, DG interface control, and load type. Induction motor loads can prove problematical to microgrid transient stability, particularly in situations in which the voltage dip can cause the induction motor to "pull out."
AB - With the growing deployment of microgrids, it has become urgent to investigate the microgrid behavior during transient faults and subsequent islanding conditions. The load type and the manner in which distributed generations (DGs) are controlled can have substantial impacts on the dynamic performance of microgrids. In this paper, impacts of different control schemes of the inverter-based DG and microgrid load types on the microgrid stability subsequent to fault-forced islanding are investigated. A microgrid model, simulated on Matlab/Simulink software, is analyzed including a mix of synchronous and inverter-based DG and a combination of passive RLC and induction motor (IM) loads. Simulation results show that in the presence of IM loads, the microgrid may lose its stable operation even if the fault is isolated within a typical clearing time. The critical clearing time of a microgrid is highly dependent on the microgrid control strategy, DG interface control, and load type. Induction motor loads can prove problematical to microgrid transient stability, particularly in situations in which the voltage dip can cause the induction motor to "pull out."
KW - Distribution systems
KW - grid faults
KW - induction motor (IM) loads
KW - inverter control schemes
KW - microgrid stability
UR - http://www.scopus.com/inward/record.url?scp=84859760227&partnerID=8YFLogxK
U2 - 10.1109/TPWRD.2012.2183150
DO - 10.1109/TPWRD.2012.2183150
M3 - Article
AN - SCOPUS:84859760227
SN - 0885-8977
VL - 27
SP - 658
EP - 669
JO - IEEE Transactions on Power Delivery
JF - IEEE Transactions on Power Delivery
IS - 2
M1 - 6155067
ER -