Results 91 to 100 of about 1,496 (223)

Advanced Test Circuit for DC Circuit Breakers [Elektronisk resurs]

, 2018
In future HVDC systems, many DC circuit breakers (DCCBs) will be required. In this paper, an advanced test circuit for DCCBs is described. A DC source is combined with a capacitor bank. In contrast to other test circuits, the proposed test circuit allows
Augustin, Tim,, Becerra Garcia, Marley,, Nee, Hans-Peter,   +2 more
core  

Applications of Various Types of Circuit Breakers in Electrical Power Systems: A Review

, 2021
This paper presents a review on the applications of various types of circuit breakers (CB) used in electric power transmission and distribution. Circuit breakers are majorly classified under direct current (DC) or alternating current (AC) system.
Ezeonye , C. S., Obi, P. I., Amako, E. A.   +2 more
core  

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

DC fault protection of multi-terminal HVDC systems using DC network partition and DC circuit breakers

, 2015
This paper concentrates on using fast acting DC Circuit Breakers (DCCBs) at strategic locations to allow the entire Multi-terminal HVDC (MTDC) system to be operated interconnected but partitioned into islanded DC network zones following faults.
Xu, Lie, Rahman, Md Habibur, Bell, Keith
core  

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  

Delays in Protection Devices and Their Effects on Selectivity: The Reaction Time Gap

IEEE Open Journal of Power Electronics
This Paper investigates how the internal delays of circuit breakers until the limitation of the fault current affect the selectivity of a low-voltage direct current (LVDC)-grid under short-circuit conditions.
Johannes Gehring, Raffael Schwanninger, Kilian Drexler, Bernd Wunder, Vincent Lorentz, Martin Marz   +5 more
doaj   +1 more source

Two basic ways to realise DC circuit breakers

The Journal of Engineering, 2019
As a key element of the DC grid, the technology of DC circuit breakers (DCCBs) still have difficulty to be widely used due to its large cost and volume. This paper studies the basic principle and its realisation methods for DCCBs.
Zheng Xu, Huangqing Xiao, Huangqing Xiao, Yuzhe Xu   +3 more
doaj   +1 more source

Optimized algorithm of active injection circuit to calibrate DC circuit breaker

International Journal of Electrical Power & Energy Systems, 2018
Abstract The widely acknowledged high-voltage direct current (HVDC) technology has now been accepted as a solution of connecting renewable energy sources. However, this technology is vulnerable when facing DC-side faults; due to the low DC impedance, the fault current can rise to an extremely high value in a short time.
Liu, L. (author), Liu, S. (author), Popov, M. (author)   +2 more
openaire   +3 more sources