TY - JOUR
T1 - PLL synchronization stability analysis of MMC-connected wind farms under high-impedance AC Faults
AU - Li, Yingbiao
AU - Wang, Xiongfei
AU - Guo, Jianbo
AU - Wu, Heng
AU - Zhao, Bing
AU - Wang, Shanshan
AU - Wu, Guanglu
AU - Wang, Tiezhu
N1 - Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/5
Y1 - 2021/5
N2 - This article analyzes the transient stability of an offshore wind farm connected via modular multilevel converter (MMC)-based high-voltage direct-current transmission system. The wind farm is composed by full-scale type-4 wind turbines, whereas short-circuit faults occurring in between the MMC and wind farm are considered. The MMC tends to be switched to the current limiting mode or the overmodulation mode during the ac-side fault, which further interacts with the control systems of wind turbines, complicating the transient stability problem of the system. Hence, in this work the parametric impacts of the phase-locked loop of wind turbine converters and over-current/-modulation limiters of the MMC are revealed analytically, and further corroborated by time-domain simulations.
AB - This article analyzes the transient stability of an offshore wind farm connected via modular multilevel converter (MMC)-based high-voltage direct-current transmission system. The wind farm is composed by full-scale type-4 wind turbines, whereas short-circuit faults occurring in between the MMC and wind farm are considered. The MMC tends to be switched to the current limiting mode or the overmodulation mode during the ac-side fault, which further interacts with the control systems of wind turbines, complicating the transient stability problem of the system. Hence, in this work the parametric impacts of the phase-locked loop of wind turbine converters and over-current/-modulation limiters of the MMC are revealed analytically, and further corroborated by time-domain simulations.
KW - Equilibrium points
KW - Modular multilevel converter
KW - Short-circuit faults
KW - Transient stability
KW - Wind power plant
UR - http://www.scopus.com/inward/record.url?scp=85103385036&partnerID=8YFLogxK
U2 - 10.1109/TPWRS.2020.3025917
DO - 10.1109/TPWRS.2020.3025917
M3 - Journal article
AN - SCOPUS:85103385036
SN - 0885-8950
VL - 36
SP - 2251
EP - 2261
JO - IEEE Transactions on Power Systems
JF - IEEE Transactions on Power Systems
IS - 3
M1 - 9203975
ER -