Results 91 to 100 of about 1,224 (273)

A novel method for energizing transformers for reducing inrush currents [PDF]

, 2006
Control and reduction of inrush currents of energizing transformers and reactors is an important problem in electric power systems where different methods are utilized for this purpose. In this paper, reviewing the most common methods, a novel method has
Sharifian, M.B.B., Shasvand, A., Hasanzadeh, I., Shahnia, F.   +3 more
core  

MOF‐Derived Cu‐TiO2/Alginate Micromotors for Buoyancy‐Regulated 3D Motion

Advanced Science, EarlyView.
In this work, cyanobacteria‐inspired sodium alginate (SA)/Cu‐TiO2/Fe3O4 hydrogel micromotors generate and encapsulate O2 microvesicles upon light irradiation, enabling buoyancy‐mediated Z‐axis upward migration and surface enrichment at the light‐exposed water‐air surface.
Wei Zou, Qing Wu, Jiawei Lin, Kunchen Li, Yulong Ying, Josep Puigmartí‐Luis, Salvador Pané, Sheng Wang   +7 more
wiley   +1 more source

Transformers and Long Short-Term Memory Transfer Learning for GenIV Reactor Temperature Time Series Forecasting

Energies
Automated monitoring of the coolant temperature can enable autonomous operation of generation IV reactors (GenIV), thus reducing their operating and maintenance costs. Automation can be accomplished with machine learning (ML) models trained on historical
Stella Pantopoulou, Anthonie Cilliers, Lefteri H. Tsoukalas, Alexander Heifetz   +3 more
doaj   +1 more source

Expert System Based on ESTA and Guide for Condition Evaluation of Transformers

, 2011
Through the application research of expert system shell ESTA, We have established a transformer condition evaluation expert system(ES) based on ESTA and corporate standards of State Grid (Q/GDW 169-2008) «Guide forCondition Evaluation of Oil-immersed ...
Wen Tao Sun, Shu Ting Cui, Qi Ming Cui, Zu Yuan Guan   +3 more
core   +1 more source

Thermochemical Core–Shell Architecturing of Si‐SWCNT Composites for High‐Performance Li‐Ion Battery Anodes

Advanced Science, EarlyView.
A thermochemically engineered core–shell Si architecture is developed through the controlled evolution of a SWCNT‐coated Mg2Si precursor. The process simultaneously generates a nanoporous Si shell for strain accommodation and Li+ transport, a chemically anchored SiC interfacial layer for robust mechanical and electrical coupling, and a Mg‐containing Si
Dong Gyun Hong, Byeong Guk Kim, Jung‐Hyeok Park, Sunwoo Lee, Donghwi Cho, Jaeik Hyun, Ki‐Hun Nam, Youngoh Kim, Geon‐Woong Lee, Sunhye Yang, Seung Yol Jeong, Myungwoo Choi   +11 more
wiley   +1 more source

Optimal Power Flow Solution Using Ant Manners for Electrical Network

Advances in Electrical and Computer Engineering, 2009
This paper presents ant manners and the collective intelligence for electrical network. Solutions for Optimal Power Flow (OPF) problem of a power system deliberate via an ant colony optimization metaheuristic method.
ALLAOUA, B., LAOUFI, A.
doaj   +1 more source

Autonomous Solar Metallurgy for High‐Purity Gold Recovery from Electronic Waste

Advanced Science, EarlyView.
Inspired by microbial strategies for metal uptake and biomineralization, defect‐rich copper sulfide (Cu31S16) functions as a solar metallurgical platform that unifies Au(III) capture, reduction, and self‐separation. The bioinspired design enables ultrafast gold recovery from electronic‐waste leachates and the spontaneous formation of millimeter‐scale ...
Chaopeng Liu, Jiajun Li, Jialin Ruan, Wei Zhang, Wei Sun, Hongmei Li, Lei Xie, Min Liu   +7 more
wiley   +1 more source

Condition assessment using dissolved gas analysis on transmission power transformers [PDF]

In transmission networks, power transformers and reactors play a major role in the supply of power in the country. Power transformers and reactors are identified as most critical assets and have a significant impact on power network reliability.
Ngubane, Mphikiseni Michael
core   +1 more source

High‐Current‐Density Acidic CO2 Electroreduction to Formic Acid Enabled by Multiscale Microenvironment Regulation Over Defect‐Rich Sn/SnOx

Advanced Science, EarlyView.
Acidic CO2 electroreduction to formic acid is enabled by integrating mixed Sn/SnOx nanoclusters, K+‐regulated interfacial solvation, and Janus wettability. Coordinated control of active sites, interfacial water, and gas‐liquid transport suppresses hydrogen evolution and delivers approximately 85% HCOOH Faradaic efficiency at 400 mA cm−2.
Qiaoqi Guo, Bowen Jiang, Le Huang, Kunyu Jiang, Rongrong Tang, Qinong Zhu, Huajun Feng, Mengyang Fan, Yijing Xia   +8 more
wiley   +1 more source

Flexible Interconnection Strategy of Distribution Network Based on IGCT

南方能源建设
[Introduction] To better adapt to the development of distribution network, a flexible DC back-to-back interconnection solution based on integrated gate commutated thyristors (IGCT) devices for medium voltage distribution network is proposed for areas ...
Cheng SU, Xianghao JIAN, Zhida KONG, Zhenjian LUN   +3 more
doaj   +1 more source