Research on multi-port DC-DC converter based on modular multilevel converter and cascaded h bridges for MVDC applications

G Sha, Q Duan, W Sheng, C Ma, C Zhao… - IEEe …, 2021 - ieeexplore.ieee.org
Aiming at the low-voltage DC distribution network system and combining the characteristics
of F2F structure and ISOP-DAB structure DC transformer, this paper proposes a DC …

A comprehensive review of multiport DC circuit breakers for MTdc grid protection

S Zhang, G Zou, F Gao, X Wei… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Voltage source converter–based multiterminal dc (MTdc) grids, including high-and medium-
voltage levels, have attracted attention in recent years and developed fast. To protect the …

Robust traveling wave-based protection scheme for multiterminal dc grids

L Liu, A Lekić, M Popov - IEEE Transactions on Power Delivery, 2023 - ieeexplore.ieee.org
The DC transmission line protection technology is crucial for the development of multi-
terminal Voltage Source Converter (VSC)-based HVDC systems. This article proposes a …

Fault location method for mmc-hvdc systems based on numerical laplace transform

J Yan, G Song, Z Chang, X Gao… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Fault location plays a pivotal role in expediting the restoration of systems after faults.
However, the necessity for rapid fault isolation in multi-terminal direct current (MTDC) …

A Novel Segmented-COV-Based Single-Ended Line Protection Algorithm for the Multiterminal MMC-HVDC System With No Boundary Reactor

J He, Y Sheng, B Li, Y Li, B Zhou - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
The protection is one of the most important techniques for the modular multilevel converter
(MMC) high-voltage dc (HVdc) system. The existing single-ended dc line protections are …

Capacitor voltage increment suppression control for CTB-HMMCs With bypassed UFB-SMs under DC fault

Q Li, F Deng, J Lin, S Chen, H Yi… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
The crossing thyristor branches (CTBs) based hybrid modular multilevel converter (HMMC)
can effectively protect high-voltage direct current system under dc-line short-circuit fault with …

Fast low frequency fault location and section identification scheme for VSC-based multi-terminal HVDC systems

H Panahi, M Sanaye-Pasand… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Penetration of DC networks is rapidly increasing in modern power systems. As transient
behavior of DC grids is different from that of AC ones, AC grid protection schemes might not …

[HTML][HTML] A non-unit line protection method for MMC-HVDC grids based on the curvatures of backward traveling waves

F **e, Z Hao, D Ye, S Yang, C Li, G Dai, B Zhang… - International Journal of …, 2023 - Elsevier
The existing protection techniques for high-voltage direct-current (HVDC) grids suffer from
several shortcomings such as high sampling frequency, poor robustness, and reliance on …