TY - JOUR
T1 - Bus Participation Factor Analysis for Harmonic Instability in Power Electronics Based Power Systems
AU - Ebrahimzadeh, Esmaeil
AU - Blaabjerg, Frede
AU - Wang, Xiongfei
AU - Bak, Claus Leth
PY - 2018/12
Y1 - 2018/12
N2 - Compared with the conventional power systems, large-scale power electronics based power systems present a more complex situation, where harmonic instability may be induced by the mutual interactions between the inner control loops of the converters. This paper presents an approach to locate which power converters and buses are more sensitive and have significant contribution to the harmonic instability. In the approach, a power electronics based system is introduced as a Multi-Input Multi-Output (MIMO) dynamic system by means of a dynamic admittance matrix. Bus Participation Factors (PFs) are calculated by the oscillatory mode sensitivity analysis versus the elements of the MIMO transfer function matrix. The PF analysis detects which power electronic converters or buses have a higher participation in harmonic instability excitation than others or at which buses such instability problems have a higher impact. In order to confirm the effectiveness of the presented approach, time-domain simulation results are provided for a 400-MW wind farm in PSCAD software environment.
AB - Compared with the conventional power systems, large-scale power electronics based power systems present a more complex situation, where harmonic instability may be induced by the mutual interactions between the inner control loops of the converters. This paper presents an approach to locate which power converters and buses are more sensitive and have significant contribution to the harmonic instability. In the approach, a power electronics based system is introduced as a Multi-Input Multi-Output (MIMO) dynamic system by means of a dynamic admittance matrix. Bus Participation Factors (PFs) are calculated by the oscillatory mode sensitivity analysis versus the elements of the MIMO transfer function matrix. The PF analysis detects which power electronic converters or buses have a higher participation in harmonic instability excitation than others or at which buses such instability problems have a higher impact. In order to confirm the effectiveness of the presented approach, time-domain simulation results are provided for a 400-MW wind farm in PSCAD software environment.
KW - Harmonic instability
KW - power electronic based systems
KW - participation factor (PF) analysis
KW - sensitivity analysis
UR - http://www.scopus.com/inward/record.url?scp=85043469799&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2018.2803846
DO - 10.1109/TPEL.2018.2803846
M3 - Journal article
SN - 0885-8993
VL - 33
SP - 10341
EP - 10351
JO - I E E E Transactions on Power Electronics
JF - I E E E Transactions on Power Electronics
IS - 12
M1 - 8310606
ER -