Results 1 to 10 of about 1,289,411 (215)

A novel controllable capacitor commutation based superconducting hybrid direct current breaker. [PDF]

Sci Rep
Featuring low power loss and high reliability, voltage source converter medium voltage direct current (VSC-MVDC) systems have been widely employed for grid-tied renewable energy applications.
Xu Y, Junaid M, Li M, Yang J, Chen Y, Alkahtani M.   +5 more
europepmc   +2 more sources

Improved assembly DC circuit breaker based on resonant current injection. [PDF]

PLoS One
DC circuit breakers (DCCBs) with high breaking capacity and low cost are necessary for quick fault clearance in DC networks. The assembly DC circuit breakers (ADCCBs) have a main breaking section (MBS) and a sub-breaking sections (SBS) for each line ...
Cui P, Li G, Zhang Q, He Q, Chen Z, Yang W.   +5 more
europepmc   +2 more sources

A Review on Hybrid Circuit Breakers for DC Applications

IEEE Open Journal of the Industrial Electronics Society, 2023
Direct current (dc) power system protection presents a major challenge due to its unique characteristics, namely the absence of natural zero current crossing points.
Ana Rafaela Figueiredo Bento, Fernando Bento, Antonio J. Marques Cardoso   +2 more
doaj   +1 more source

A Review on Thomson Coil Actuators in Fast Mechanical Switching

Actuators, 2022
With the rapid development of DC power systems and the increasing demand for DC circuit breakers, electromagnetic repulsive drives-based Thomson coil actuators (TCA) are widely investigated to provide the high-speed actuating required for ultra-fast ...
Mohmmad Al-Dweikat, Jian Cui, Shuai Sun, Mingming Yang, Guogang Zhang, Yingsan Geng   +5 more
doaj   +1 more source

Overvoltage and insulation coordination of flexible DC distribution network with DC circuit breaker

电力工程技术, 2023
With the continuous application and popularization of distributed energy, DC power distribution will become the mainstream form of future power distribution system.
LIU Shuhan, ZHUANG Yuan, LIANG Zhan, LI Jiangtao, LI Chenjie, WANG Yifeng   +5 more
doaj   +1 more source

Simulation study on arc motion process of DC miniature circuit breakers

AIP Advances, 2023
Based on the theory of magnetohydrodynamics, a mathematical model of air arc in the arc extinguishing chamber of a DC miniature circuit breaker was established. By coupling external circuit characteristics and contact movement process, the motion process
Dezhi Xiong, Shidong Chen, Yu Xiao, Chen Ma   +3 more
doaj   +1 more source

An Overview and Minimum Fault Ramp Rate Analysis of Impedance Based Circuit Breaker Topologies

IEEE Access, 2023
In the advent of recent developments in a higher efficiency Direct Current (DC) system, the DC microgrid proves to be a permissible future to match the load demand with distributed power generation.
J. Mohamed Abdullah, V. Sumathi
doaj   +1 more source

Contact arc time – important parameter of DC high-speed circuit-breakers [PDF]

MATEC Web of Conferences, 2019
The parameters of DC high-speed circuit-breakers (HSCB) and test methods are specified in the standards. These standards define requirements of the circuit breakers opening time and the total breaking time.
Rojek Artur, Skrzyniarz Marek
doaj   +1 more source

Research on the action characteristics and breaking control of 100 kA series double break DC vacuum circuit breaker for CRAFT quench protection system

AIP Advances, 2023
The DC vacuum circuit breaker plays an important role in the quench protection system of the Comprehensive Research Facility for Fusion Technology (CRAFT) project.
Xingguang Hu, Hang Li, Hua Li, Zhiquan Song, Xiang Gao, Jiangang Li   +5 more
doaj   +1 more source

Simulation Model to Analyze the Consequences of DC Faults in MMC-Based HVDC Stations

Electricity, 2021
The global development of high-voltage direct-current (HVDC) systems in fields such as renewable energy sources, interconnection of asynchronous grids or power transmission over great distances, is unquestionably important.
Davin Guedon, Philippe Ladoux, Sébastien Sanchez, Sébastien Cornet   +3 more
doaj   +1 more source