TY - JOUR
T1 - A Novel Dynamic Aggregation Modeling Method of Grid-Connected Inverters
T2 - Application in Small-Signal Analysis
AU - Liao, Shuhan
AU - Zha, Xiaoming
AU - Li, Xianzhe
AU - Huang, Meng
AU - Sun, Jianjun
AU - Pan, Jing
AU - Guerrero, Josep M.
PY - 2019/7/1
Y1 - 2019/7/1
N2 - Converter-control-based generators exhibit different dynamic characteristics compared with traditional synchronous generators, and thus affect the oscillation modes and small-signal stability of power systems in a different manner. Simplified representation of a great number of grid-connected inverters is indispensable for efficient and accurate dynamic analysis of power systems integrated with large-scale renewable energy generation. This paper proposes a novel dynamic aggregation modeling method of grid-connected inverters using coherency-based equivalence, and validates the applicability of the aggregated model for small-signal stability analysis. Modal analysis and dynamic simulation are conducted on the detailed model and aggregated models of the test system. The frequency-domain results and the time-domain results from PSCAD/EMTDC both verify the adequacy of the coherent equivalence practice in the small-signal rotor angle stability analysis.
AB - Converter-control-based generators exhibit different dynamic characteristics compared with traditional synchronous generators, and thus affect the oscillation modes and small-signal stability of power systems in a different manner. Simplified representation of a great number of grid-connected inverters is indispensable for efficient and accurate dynamic analysis of power systems integrated with large-scale renewable energy generation. This paper proposes a novel dynamic aggregation modeling method of grid-connected inverters using coherency-based equivalence, and validates the applicability of the aggregated model for small-signal stability analysis. Modal analysis and dynamic simulation are conducted on the detailed model and aggregated models of the test system. The frequency-domain results and the time-domain results from PSCAD/EMTDC both verify the adequacy of the coherent equivalence practice in the small-signal rotor angle stability analysis.
KW - coherency-based equivalence
KW - Dynamic aggregation
KW - inverter
KW - renewable energy
KW - small-signal stability
UR - http://www.scopus.com/inward/record.url?scp=85067914971&partnerID=8YFLogxK
U2 - 10.1109/TSTE.2019.2893976
DO - 10.1109/TSTE.2019.2893976
M3 - Journal article
AN - SCOPUS:85067914971
SN - 1949-3029
VL - 10
SP - 1554
EP - 1564
JO - IEEE Transactions on Sustainable Energy
JF - IEEE Transactions on Sustainable Energy
IS - 3
M1 - 8618366
ER -