Results 71 to 80 of about 663,349 (153)

Transient Overvoltages in Onshore HVDC Cable Joints: Surge Reflections and the Influence of Grounding Configurations

High Voltage, Volume 11, Issue 1, Page 83-99, February 2026.
ABSTRACT This study examines transient overvoltage phenomena in 525 kV high‐voltage direct current (HVDC) onshore cable systems, with particular emphasis on the influence of grounding configurations in two joint types: straight‐through and screen‐separated.
Tanumay Karmokar, Roland Dongping Zhang, Mohamad Ghaffarian Niasar, Marjan Popov   +3 more
wiley   +1 more source

Power electronics options for large wind farm integration : VSC-based HVDC transmission [PDF]

, 2006
This paper describes the use of voltage source converter based HVDC transmission (VSC transmission) system for grid integration of large wind farms over long distance.
Xu, Lie, Yao, Liangzhong, Lie Xu, Liangzhong Yao, Sasse, C., Christian Sasse, Xu, L., Yao, L., Sasse, Christian   +8 more
core   +1 more source

Selective Harmonic Elimination Modulation for HVDC Modular Multilevel Converter

, 2021
This paper proposes the application of a mixed selective harmonic elimination mitigation modulation algorithm to three-phase HVDC modular multilevel converters. Defining 1 the number of levels, two cases have been considered: t=65 and t=257.
Cimoroni M. G., Cecati C., Carlo Cecati, Concettina Buccella, Buccella C., Maria Gabriella Cimoroni   +5 more
core   +1 more source

A Hybrid Ultra‐High Voltage DC Transformer With Digital Twin‐Driven Operation and Control

Digital Twins and Applications, Volume 3, Issue 1, January/December 2026.
This study introduces a digital twin‐driven hybrid ultra‐high‐voltage DC transformer (UHVDCT) that combines high‐capacity LCCs with low‐capacity MMCs at the UHV side. This innovative topology reduces MMC requirements by 32.9% while ensuring stable power flow and dynamic reactive balance through real‐time virtual‐physical synchronization.
Ling Xu, Le Zhao, Xiaohu Zhang, Hanlin Guo, Jie Fang, Zheren Zhang, Zheng Xu   +6 more
wiley   +1 more source

Study on a Novel Energy-Dissipation Branch for 600 kV DC Circuit Breakers Based on Ga–In–Sn Liquid Metal

Electricity
With the increase in voltage levels, higher requirements are imposed on the energy-dissipation capability of high-voltage direct current (HVDC) networks. Existing energy-dissipation schemes cannot satisfy the demands of future HVDC systems. In this paper,
Yaguang Ma, Zhitan Liu, Zongbao Gao, Sheng Yang, Ke Zhuang, Zheng Li, Guangning Wu, Aozheng Wang, Yanyu Chen, Yuehong Dong, Guoqiang Gao, Lei Qiao   +11 more
doaj   +1 more source

HVDC circuit breakers modeling in multiterminal grids [PDF]

, 2017
Transition towards sustainable energy systems lead to transformation of the existing electrical power grids. One of the key enabling technologies for this transformation is high voltage direct current (HVDC) technology that has range of advantages ...
Yanushkevich, Alexander
core  

Parameterization of Circuit Breakers for HVDC Transmission Line Between Egypt and the Kingdom of Saudi Arabia Toward Restriking Voltage

IEEE Access
The high voltage direct current (HVDC) transmission lines represent the prospective way for long-distance transmission between countries, remote areas, and offshore wind farms to decrease power loss.
Tamer Eliyan, Mahmoud Elsisi, Mamdouh L. Alghaythi, Meshari S. Alshammari, Fady Wadie   +4 more
doaj   +1 more source

Research and experiment of a current-limiting HVDC circuit breaker

The Journal of Engineering, 2019
Existing mechanical HVDC circuit breakers (CB) are capable of interrupting HVDC currents within several tens of milliseconds, but this is too slow to satisfy the requirements of a reliable HVDC grid.
Yi Du, Junpeng Deng, Hongyang Lin, Huan Zheng, Kangli Xiang, Yu Shen   +5 more
doaj   +1 more source

Appropriate Protection Scheme for DC Grid Based on the Half Bridge Modular Multilevel Converter System

Energies, 2019
The half bridge (HB) modular multilevel converter (MMC) technology is considered a breakthrough to mitigate the shortcomings of the conventional voltage source converter (VSC) in high-voltage direct-current (HVDC) grid application.
Ho-Yun Lee, Mansoor Asif, Kyu-Hoon Park, Hyun-Min Mun, Bang-Wook Lee   +4 more
doaj   +1 more source

Closing performance of the Thomson-coil actuator for a 110 kV FMS

The Journal of Engineering, 2019
In the 500 kV hybrid high-voltage direct current (HVDC) circuit breaker, there are five 110 kV fast mechanical switches (FMSs) in the nominal current path.
Yannan Zhou, Yulong Huang, Weijie Wen, Keke Sun, Bo Men, Jibin Zhu   +5 more
doaj   +1 more source