Results 101 to 110 of about 16,999 (226)

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

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

Waveform-level time-domain simulation comparison study of three shipboard power system architectures [PDF]

, 2012
Detailed waveform-level modeling and simulation of three alternative shipboard power system architectures is presented herein. The three system architectures are based on conventional 60Hz medium-voltage ac (MVAC), higherfrequency 240Hz medium-voltage ac
Crider, J., Dougal, R.A., Hebner, R., Langston, J., Lee, Y., Ouroua, A., Steurer, M., Sudhoff, S.D., Zhang, Y., Zivi, E.   +9 more
core  

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

Evaluation of a Local Fault Detection Algorithm for HVDC Systems [PDF]

, 2019
A great increase in the amount of energy generated from clean and renewable sources integrated in the electric power system is expected worldwide in the coming years.
Eguia Lopez, P., Larruskain Eskobal, M., Perez Molina, M.J., Rodriguez Sanchez, R., Santos Mugica, M.   +4 more
core   +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

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

Impact of DC protection strategy of large HVDC network on frequency response of the connected AC system [PDF]

, 2018
Integration of renewable energy generations requires the transmission of bulky power over long distance and HVDC transmission systems become a more preferable choice compared to conventional HVAC systems.
Rahman, M. H., Wang, Y., Xu, L., Zhou, D.   +3 more
core  

Impact of marine power system architectures on IFEP vessel availability and survivability [PDF]

, 2007
In recent years integrated full electric propulsion (IFEP) has become a popular power system concept within the marine community, both for the naval and the commercial community.
Booth, C.D., Burt, G.M., McDonald, J.R., Schuddebeurs, J.   +3 more
core   +1 more source