TY - GEN
T1 - Power Safe Transmission Range of Three-Phase Series-Connected Modular Multilevel Converter under Unbalanced AC Grid Conditions
AU - Bai, Bingbing
AU - Pan, Xuewei
AU - Wang, Can
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Compared with 3-phase parallel-connected modular multilevel converter (PC-MMC), the 3-phase series-connected MMC (SC-MMC) is more beneficial due to possible reduction of construction costs and footprints, which is more suitable for HVDC tapping station. To determine the power safe transmission range of SC-MMC under both balanced and unbalanced conditions, this paper introduced the analytical and point-scanning methods. Firstly, the equivalent mathematical model of SC-MMC was derived. Next, constraints of the operation boundary are discussed and decided. Then, the corresponding boundary control strategy is designed for the possible over power operation of SC-MMC under unbalanced ac grid conditions. The simulation model of SC-MMC and its control systems are built in PSCAD/EMTDC. Simulation results show the correctness of the theoretical analysis and the effectiveness of the proposed power safe transmission range boundary control method.
AB - Compared with 3-phase parallel-connected modular multilevel converter (PC-MMC), the 3-phase series-connected MMC (SC-MMC) is more beneficial due to possible reduction of construction costs and footprints, which is more suitable for HVDC tapping station. To determine the power safe transmission range of SC-MMC under both balanced and unbalanced conditions, this paper introduced the analytical and point-scanning methods. Firstly, the equivalent mathematical model of SC-MMC was derived. Next, constraints of the operation boundary are discussed and decided. Then, the corresponding boundary control strategy is designed for the possible over power operation of SC-MMC under unbalanced ac grid conditions. The simulation model of SC-MMC and its control systems are built in PSCAD/EMTDC. Simulation results show the correctness of the theoretical analysis and the effectiveness of the proposed power safe transmission range boundary control method.
KW - asymmetrical faults
KW - boundary control
KW - modular multilevel converter
KW - power safe transmission range
KW - rotating d-q reference frame
UR - https://www.scopus.com/pages/publications/85143395423
U2 - 10.1109/ICPSAsia55496.2022.9949888
DO - 10.1109/ICPSAsia55496.2022.9949888
M3 - 会议稿件
AN - SCOPUS:85143395423
T3 - I and CPS Asia 2022 - 2022 IEEE IAS Industrial and Commercial Power System Asia
SP - 887
EP - 892
BT - I and CPS Asia 2022 - 2022 IEEE IAS Industrial and Commercial Power System Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE IAS Industrial and Commercial Power System Asia, I and CPS Asia 2022
Y2 - 8 July 2022 through 11 July 2022
ER -