Results 41 to 50 of about 12,423 (301)

A Topology of Current limiting Hybrid DC Circuit Breaker

Journal of Harbin University of Science and Technology, 2023
To solve the problem that most of the current hybrid DC circuit breakers do not have the current limiting function and the cost is too high, a low-cost current limiting hybrid DC circuit breaker is proposed.When the fault occurs, the ultra-fast ...
DONG Henan, LI Bingkun, SUN Feng, CHENG Xuke, LIU Yiqi   +4 more
doaj   +1 more source

Modified half-bridge modular multilevel converter for HVDC systems with DC fault ride-through capability [PDF]

, 2014
One of the main challenges of voltage source converter based HVDC systems is DC faults. In this paper, two different modified half-bridge modular multilevel converter topologies are proposed.
Aboushady, A.A., Ahmed, K.H.
core   +2 more sources

Offshore DC Grids as an Interconnection of Radial Systems : Protection and Control aspects [PDF]

, 2015
Peer ...
Jovcic, Dragan, Nguefeu, S., Taherbaneh, Mohsen, Taisne, J.P.   +3 more
core   +1 more source

Fault mode operation strategies for dual H-bridge current flow controller in meshed HVDC grid [PDF]

, 2018
Peer ...
Carvalho, Adriano, Gomis Bellmunt, Oriol, Mokhberdoran, Ataollah, Prieto Araujo, Eduardo, Sau Bassols, Joan, Silva, Nuno   +5 more
core   +2 more sources

A hybrid circuit breaker based on current commutation approach for multi-feeder DC railway substations

CSEE Journal of Power and Energy Systems, 2019
The paper presents an economic hybrid circuit breaker for limiting and interrupting the faults in DC railways substations. For fast fault current interruption, the hybrid breaker incorporates high speed mechanical contacts actuated by power semiconductor
Saady Hasan
doaj   +1 more source

A hybrid DC circuit breaker based on a generalized H-bridge circuit

Zhejiang dianli, 2023
Given the rapid development of multi-terminal DC power grids and the treatment of DC faults， a high-voltage hybrid DC circuit breaker based on a generalized H-bridge circuit is proposed.
LU Yi, WU Junjian, QIU Peng, CHEN Qian, XU Feng, XU Kehan, XU Zheng   +6 more
doaj   +1 more source

Influence of UHV GIL access on transient recovery voltage of circuit breaker

电力工程技术, 2022
The access of ultra high voltage (UHV) gas-insulated transmission line (GIL) affects both the transient recovery voltage (TRV) amplitude and the rate of rise of TRV (RRRV) of circuit breakers,which may endanger the breaking capacity of circuit breakers ...
SUN Yi, LIU Jinghui, ZHENG Xinlei, LI Jiangtao, XU Yiqing, SHI Dajun   +5 more
doaj   +1 more source

Optimizing the roles of unit and non-unit protection methods within DC microgrids [PDF]

, 2012
The characteristic behavior of physically compact, multiterminal dc networks under electrical fault conditions can produce demanding protection requirements.
Burt, Graeme, Crolla, Paul, Fletcher, Steven, Galloway, Stuart, Norman, Patrick   +4 more
core   +1 more source

Reduced DC circuit breaker requirement on mixed converter HVDC networks [PDF]

, 2015
© 2015 IEEE.Recently proposed meshed HVDC networks include both converters and DC circuit breakers, and the fault currents experienced and therefore the capacity requirement of circuit breakers are dependent on the topology of converters used on the ...
Chaffey, G, Green, TC
core   +1 more source

Hybrid institution vacuum circuit breaker action time prediction

Journal of Physics: Conference Series, 2022
Abstract Phase-control technology requires a sufficiently small dispersion of switching operation times, however, even though the switch itself is sufficiently stable, action time dispersion is still a key issue in phase-control technology due to various factors.
Enyuan Dong, Peng Hou, Yongxing Wang, Liyan Zhang, Yu Tian, Geyang Liu, Ruida Zhuang   +6 more
openaire   +1 more source