Cyber Security of HVDC Systems: A Review of Cyber Threats, Defense, and Testbeds

A Presekal, M Jorjani, VS Rajkumar, H Goyel… - IEEE …, 2024 - ieeexplore.ieee.org
High Voltage Direct Current (HVDC) technology is one of the key enablers of the energy
transition, especially for offshore wind energy systems. While extensive research on cyber …

MPLM algorithm based fault location method for MTDC systems using backward voltage traveling waves

L Liu, X Kang, X Ma, X Chen, S Li, X Li, X Liu - Electric Power Systems …, 2024 - Elsevier
Accurate DC fault location enhances resilience and reduces system downtime and
economic losses of multi-terminal direct current (MTDC) systems. This paper introduces a …

[HTML][HTML] Parameter fitting-based traveling wave fault location method for multi-terminal DC grids

L Liu, F Xie, X Kang, Z Hao, A Lekić, M Popov - International Journal of …, 2025 - Elsevier
DC fault location technology is crucial for estimating the fault location and developing multi-
terminal direct current (MTDC) systems. This article presents a novel fault location method …

[HTML][HTML] Non-unit protection method for boundary-component-free MTDC systems using normalized backward traveling waves

F Xie, L Liu, Z Hao, T Wang, S Yang, A Lekić… - International Journal of …, 2025 - Elsevier
The performance of existing protection methods for multi-terminal direct current systems
depends on the availability and sizes of boundary components. To overcome the limitation …

An efficient setting calculation method for traveling wave protection of VSC-HVDC lines

Y Shen, Z Zhao, C Huang, Y Li - Electric Power Systems Research, 2024 - Elsevier
To reduce the setting calculation workload of traveling wave protection for VSC-HVDC lines,
this paper proposes an efficient setting calculation method. Firstly, the fault responses of four …

[HTML][HTML] Non-unit protection method for MMC-HVDC grids based on selective drop rate of voltage traveling waves

FD Marvasti, A Mirzaei, M Savaghebi, A Lekić, M Popov - Energy Reports, 2024 - Elsevier
Fast, sensitive, and selective protection principles are one of the major challenges in the
feasibility of modular multi-terminal (MMC) high voltage direct current (HVDC) grids. Rate of …

[HTML][HTML] A Novel Non-Unit Protection Method for MMC-HVDC Transmission Lines Based on the Ratio of Line-Mode Voltage Second Derivative

Y Wang, J Ouyang, Z Shi, S Fan - Electricity, 2024 - mdpi.com
The modular multilevel converter (MMC) high-voltage direct current (HVDC) transmission
technology is essential for overcoming the challenges of large-scale renewable energy …

Single-ended dc fault location method for mmc-based hvdc power system using adaptive multi-step levenberg-marquardt algorithm

L Liu, F Xie, M Popov, Z Hao… - 2023 IEEE Belgrade …, 2023 - ieeexplore.ieee.org
This article presents an accurate DC fault location method that applies parameter fitting. This
technique first discusses the traveling wave (TW) propagation process in the decoupled line …

Non-Unit DC Line Protection Method for Multi-Terminal MMC-HVDC System Based on Normalized Backward Traveling Waves

F Xie, L Liu, Z Hao, A Lekić… - 2023 IEEE PES Innovative …, 2023 - ieeexplore.ieee.org
Existing line protection methods for multi-terminal direct current (MTDC) systems are
constrained by the placement and values of boundary elements. To overcome this limitation …

[HTML][HTML] A highly accurate double-ended traveling wave fault location method using GWO-VMD and the Hilbert transform for offshore MMC-MTDC grids

L Liu, X Chen, X Kang, X Ma, J Li, S Liu, B Zhao… - Smart Power & Energy …, 2024 - Elsevier
Accurate and reliable DC fault location methods can significantly enhance the resilience and
reliability of offshore MMC-based multi-terminal direct current (MTDC) grids. This research …