Results 81 to 90 of about 1,289,411 (215)

Topology of a Hybrid DC Circuit Breaker with Coupled Inductor-assisted Current Limiting [PDF]

Dianli jianshe
[Objective] With the increase in transmission capacity of DC grids， issues such as rapid rise of fault current， high amplitude， difficulty in breaking， and high cost arise in hybrid DC circuit breakers based on fully controlled power electronic devices ...
ZHANG Baoge, LI Guodong, HUANG Jiahong, CHANG Weishan
doaj   +1 more source

A coordination protection scheme for high-voltage DC grids without line boundary reactors

International Journal of Electrical Power & Energy Systems
Local measurement-based protections of DC transmission line without boundary reactors are important for the safe operation of high-voltage DC grids, however, existing protections have dead zones or cannot tolerate high-resistance faults. To address these
Yanxun Guo, Yifei Wang, Junjie Feng, Yaoqiang Wang, Xiaomei Yao, Haifeng Li   +5 more
doaj   +1 more source

Optimisation of commutation circuit parameters for DC vacuum circuit breakers

The Journal of Engineering, 2019
As the environmental problems caused by the consumption of the non-renewable fossil energy are getting increasingly serious, the new energy power generation has received wide attentions.
Deen Yu, Hai Chen, Wei Liu, Xiaoming Liu
doaj   +1 more source

Design and Analysis of a Controllable Reactor Solid-State Circuit Breaker for Enhanced Fault Current Interruption in AC/DC Microgrids

Energies
The occurrence of short-circuit faults in AC/DC microgrids gives rise to exceptionally high currents with rapid escalation, particularly in DC feeders where current zero-crossing is absent.
Ali Bakhshi, Ali Moghim, Mojgan Hojabri
doaj   +1 more source

The Alternate Arm Converter: A New Hybrid Multilevel Converter With DC-Fault Blocking Capability [PDF]

, 2013
This paper explains the working principles, supported by simulation results, of a new converter topology intended for HVDC applications, called the alternate arm converter (AAC).
Merlin, Michael MC, Green, Tim C, Critchley, Roger, Crookes, Will, Hassan, Fainan, Mitcheson, Paul D, Trainer, David R   +6 more
core   +1 more source

SCiBreak's DC Circuit Breaker Technologies

, 2021
DC circuit breaker technologies from SCiBreak in the HYPERRIDE Project.
openaire   +2 more sources

Design on Circuit Breaker Performance Detecting System for Metro Vehicle

机车电传动, 2011
With analysis of DC high-speed circuit breaker working principle of metro vehicle and its performance detecting requirements, hardware and software of a detecting system was designed and the test methods was described in detail. Through measuring DC high-
吕娜玺, 杜连超
doaj  

Research on Fault Diagnosis of High-Voltage Circuit Breakers Using Gramian-Angular-Field-Based Dual-Channel Convolutional Neural Network

Energies
The challenge of accurately diagnosing mechanical failures in high-voltage circuit breakers is exacerbated by the non-stationary characteristics of vibration signals.
Mingkun Yang, Liangliang Wei, Pengfeng Qiu, Guangfu Hu, Xingfu Liu, Xiaohui He, Zhaoyu Peng, Fangrong Zhou, Yun Zhang, Xiangyu Tan, Xuetong Zhao   +10 more
doaj   +1 more source

DC protection for a multi-terminal HVDC network including offshore wind power, featuring a reduced DC circuit breaker count

The Journal of Engineering, 2019
Large offshore wind farms located far from shore, as are being planned or built in the North Sea, will require high-voltage DC (HVDC) transmission to shore, and multi-terminal HVDC could offer further benefits.
Max A. Parker, Derrick Holliday, Derrick Holliday, Stephen J. Finney   +3 more
doaj   +1 more source

Fast Hybrid Circuit Breaker for Medium-Voltage DC and AC Railway Power Supply Networks: A Simulation-Based Study [PDF]

International Journal of Railway Research
This paper investigates the performance of a medium-voltage hybrid circuit breaker designed for the protection of electrical power supply networks in railway transportation systems.
Ahmad Olyaei, Rozbeh Asad
doaj