Results 61 to 70 of about 33,857 (310)

Inverse time overcurrent protection for low-frequency wind farm transmission lines based on transient current components

International Journal of Electrical Power & Energy Systems
Low-Frequency Transmission Systems (LFTS) integrate the benefits of both high-voltage alternating current (HVAC) and high-voltage direct current (HVDC) transmission technologies. This combination makes LFTS a significant innovation for transmitting large
Yue Dai, Wei Zhao, Hongchun Shu
doaj   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Service restoration strategy for active distribution networks considering source-load uncertainty

International Journal of Electrical Power & Energy Systems
Active distribution networks (ADNs) incorporate numerous distributed generations (DGs) and energy storage systems. When sudden faults occur in the system, service restoration can be enhanced through microgrid formation and network reconfiguration ...
Hongchun Shu, Hongfang Zhao, Xuezhuan Zhao   +2 more
doaj   +1 more source

Evaluating the impact of superconducting fault current limiters on distribution network protection schemes [PDF]

, 2011
Rising fault levels are becoming increasingly problematic in the UK distribution network, with large sections of the network operating near to its designed fault level capability.
Burt, Graeme M, Emhemed, Abdullah, Kincaid, Jennifer, Abdulhadi, Ibrahim   +3 more
core  

Electromagnetic compatibility studies within smart grid automated substations [PDF]

, 2014
Switching, fault currents, lightning and other transient phenomena produce electromagnetic fields that may disturb the normal functioning of a high voltage power substation. With the advent of the ‘smart grid’ – where electronic control and communication
Mihai D. Rotaru, Tarmizi, A.I., Rotaru, M., Sykulski, J.K., A. I. Tarmizi, Jan K. Sykulski   +5 more
core   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Multi-terminal flexible DC grid circuit breaker withstands multi-lightning strike analysis

Scientific Reports
Lightning represents the primary threat to power grids, with approximately 80% of natural occurrences being multi-lightning strikes, which have been extensively studied and confirmed to pose even more severe hazards.
Yutao Tang, Hongchun Shu, Kai He, Yue Dai, Yu Kuang, Yiming Han, Weijie Lou   +6 more
doaj   +1 more source

Defense strategy against cyber-physical coordinated false data injection attacks in cyber-physical power systems

Results in Engineering
With the deep integration of cyber-physical power systems (CPPS), cyber-physical coordinated false data injection attacks (FDIAs) have emerged as a new risk threatening the security of power grids.
Hongchun Shu, Hongfang Zhao, Yongyin Yang, Yutao Tang   +3 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, Norman, Patrick, Galloway, Stuart, Fletcher, Steven, Crolla, Paul   +4 more
core   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source