TY - GEN
T1 - Input-Output Characteristics Based Fault Current Analysis of MMC-HVDC Transmission Systems
AU - Liu, Wansong
AU - Qin, Boyu
AU - Wang, Kai
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/10
Y1 - 2019/10
N2 - The modular multilevel converter (MMC) has been widely adopted in high voltage direct current (HVDC) transmission systems due to the advantages of low switching frequency and operation loss, no commutation failure, etc. However, the short circuit current of MMC-HVDC raises rapidly after the fault occurs due to the small damping characteristics of MMCs. This paper proposes an input-output characteristics based fault current analysis method for MMC-HVDC transmission systems. First, the operator approach is used to obtain the input-output characteristics of MMCs. The MMC model is decomposed into a series combination of a linear and a nonlinear part, and simulation-based algorithms are proposed to identify both parts. Second, the relationship between short circuit current and input-output characteristics of MMCs is constructed to calculate the infancy of the short-circuit current. Finally, time-domain simulations are performed to verify the efficacy of the proposed algorithm.
AB - The modular multilevel converter (MMC) has been widely adopted in high voltage direct current (HVDC) transmission systems due to the advantages of low switching frequency and operation loss, no commutation failure, etc. However, the short circuit current of MMC-HVDC raises rapidly after the fault occurs due to the small damping characteristics of MMCs. This paper proposes an input-output characteristics based fault current analysis method for MMC-HVDC transmission systems. First, the operator approach is used to obtain the input-output characteristics of MMCs. The MMC model is decomposed into a series combination of a linear and a nonlinear part, and simulation-based algorithms are proposed to identify both parts. Second, the relationship between short circuit current and input-output characteristics of MMCs is constructed to calculate the infancy of the short-circuit current. Finally, time-domain simulations are performed to verify the efficacy of the proposed algorithm.
KW - Fault Current Analysis
KW - Input-Output Characteristics
KW - MMC-HVDC
KW - Operator Approach
UR - https://www.scopus.com/pages/publications/85096420965
U2 - 10.1109/APAP47170.2019.9225037
DO - 10.1109/APAP47170.2019.9225037
M3 - 会议稿件
AN - SCOPUS:85096420965
T3 - APAP 2019 - 8th IEEE International Conference on Advanced Power System Automation and Protection
SP - 253
EP - 256
BT - APAP 2019 - 8th IEEE International Conference on Advanced Power System Automation and Protection
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th IEEE International Conference on Advanced Power System Automation and Protection, APAP 2019
Y2 - 21 October 2019 through 24 October 2019
ER -