Operating DC circuit breakers with MMC

O Cwikowski, A Wood, A Miller… - … on Power Delivery, 2017 - ieeexplore.ieee.org
High voltage direct current (HVDC) grids may be protected from dc faults through the
application of HVDC circuit breakers. Recent advances in dc circuit breaker technologies …

Modular multilevel converter DC fault protection

O Cwikowski, HR Wickramasinghe… - … on Power Delivery, 2017 - ieeexplore.ieee.org
High-voltage direct current (HVDC) grids will require the development of dc protections that
provide fast fault isolation and minimize the disturbance caused to the existing ac power …

Coordination of MMCs with hybrid DC circuit breakers for HVDC grid protection

S Wang, C Li, OD Adeuyi, G Li… - … on Power Delivery, 2018 - ieeexplore.ieee.org
A high-voltage direct-current (HVDC) grid protection strategy to suppress dc fault currents
and prevent overcurrent in the arms of modular multilevel converters (MMCs) is proposed in …

Low-energy protection system for DC grids based on full-bridge MMC converters

D Jovcic, W Lin, S Nguefeu… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
This paper studies protection and control methods for a large dc grid based solely on full-
bridge modular multilevel converters (MMCs). An initial theoretical study concludes that dc …

Assembly HVDC breaker for HVDC grids with modular multilevel converters

G Liu, F Xu, Z Xu, Z Zhang… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
The modular multilevel converter (MMC) with half-bridge submodules (SMs) is the most
promising technology for high-voltage direct current (HVDC) grids, but it lacks dc fault …

Multiline breaker for HVdc applications

E Kontos, T Schultz, L Mackay… - … on Power Delivery, 2017 - ieeexplore.ieee.org
This paper presents a breaker arrangement concept, the multiline breaker (MLB), for the
protection of multiterminal high voltage dc (MTdc) networks. Based on the design of a hybrid …

An adaptive reclosing strategy for MMC-HVDC systems with hybrid DC circuit breakers

S Yang, W Xiang, X Lu, W Zuo… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Modular multilevel converter (MMC) based high voltage direct current transmission (HVDC)
is an effective solution for large-scale renewable power integration over long-distance. In the …

Equivalent circuit for half-bridge MMC dc fault current contribution

W Leterme, J Beerten… - 2016 IEEE international …, 2016 - ieeexplore.ieee.org
The modular multilevel converter (MMC) is currently the preferred converter topology for
HVDC point-to-point links and the likely choice for future meshed HVDC grids. For breaker …

Fault section identification protection algorithm for modular multilevel converter-based high voltage DC with a hybrid transmission corridor

PT Lewis, BM Grainger, HA Al Hassan… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
This paper addresses the protection of a high voltage direct current (HVDC) transmission
system, utilizing the modular multilevel converter (MMC) topology in addition to …

Control-based fault current limiter for modular multilevel voltage-source converters

VA Lacerda, RM Monaro, R Peña-Alzola… - International Journal of …, 2020 - Elsevier
The sharp rise in short-circuit currents of voltage-source converters is still a challenge for DC
grid reliability, which imposes stringent requirements on DC breakers. Therefore, fault …