Results 91 to 100 of about 9,639,269 (244)

Bridged Conductive Nanofibrous Membrane Overcoming the Porosity‐Conductivity Trade‐Off for Electrothermal Air Purification

Advanced Science, Volume 12, Issue 47, December 18, 2025.
To overcome the porosity‐conductivity trade‐off in conductive porous membranes, a conductive nanofibrous membrane bridged by self‐assembled PPy nanowires is constructed, integrating multiscale porosity with continuous electron pathways. This material‐structure‐function strategy achieves low‐resistance and high‐efficiency filtration combined with ...
Xiaoxue Yao, Zhenwen Zhang, Wei Deng, Chuhan Feng, Qili Xu, Wenzhu Lin, Zehua Peng, Yang Cao, Wang Guo, Bee Luan Khoo, Steven Wang   +10 more
wiley   +1 more source

Histogram and cosine similarity based magnetizing inrush current identification for main transformer in photovoltaic power station

Diance yu yibiao
The normal operation of the main transformer in the photovoltaic power station is the basis for the power generation output, however, the magnetizing inrush current may lead the differential protection of the transformer to malfunction.
LUAN Yunfei, ZHANG Luliang, JI Tianyao, LI Hao, MO Chun   +4 more
doaj   +1 more source

Construction of Domain Knowledge Graph Base for Coal Mine Rock‐Burst Prediction and Prevention Based on Ontology

Energy Science &Engineering, Volume 13, Issue 11, Page 5510-5524, November 2025.
ABSTRACT In China, as the mining depth of coal mines increases, the occurrence conditions of coal seams are becoming increasingly complex, leading to a continuous rise in the risk of rock‐burst. The frequent occurrence of such accidents has caused severe losses to the safe production of coal mines.
Shuheng Zhong, Qi Wang, Haoliang Yin
wiley   +1 more source

Transients in no-load condition of power transformer 20/0,4 kV [PDF]

, 2010
Ovaj rad predstavlja inovativan pristup u analizu prijelaznih pojava u elektroenergetskom sustavu korištenjem novopredloženih načina obrade podataka dobivenih iz procesora ugrađenog u moderne zaštitne releje u elektroenergetskom sustavu.
Damir Crnković, Marinko Stojkov, Nino Vrandečić   +2 more
core   +1 more source

Real‐time prediction of tunnel boring machine thrust based on multi‐resolution analysis and online learning

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 28, Page 5212-5227, 28 November 2025.
Abstract This study introduces a novel integrated framework for real‐time tunnel boring machine (TBM) thrust prediction, addressing critical limitations in handling non‐stationarity, complex spatiotemporal dependencies, and abrupt disturbances. First, a real‐time windowed multi‐resolution analysis process, which performs decomposition strictly within ...
Yongxin Wu, Hanzhi Yang, Houle Zhang, Yue Hou, Shangchuan Yang   +4 more
wiley   +1 more source

Research of restraining of transformer excitation inrush current based on improved series closing resistance

Gong-kuang zidonghua, 2013
Based on using closing resistance to reduce transformer excitation inrush current produced in underloading and no-load, an improved method of in series with capacitor on closing resistance was proposed.
LI Ping, SONG Xiao
doaj  

Solid-State Inrush Current Limiter Controller Based on Inrush Prediction for Large Transformers

, 2020
Inrush current problems of the industrial transformers are occasionally more serious than the utility transformers. A new Solid-State Inrush Current Limiter (SSICL) is proposed for medium voltage power transformers. The SSICL consists of three similar sets.
Tashakor, Nima, Ghanbari, Teymoor, Farjah, Ebrahim, Bagheri, Ehsan, Goetz, Stefan   +4 more
openaire   +2 more sources

Application of Park's power components to the differential protection of three-phase transformers [PDF]

, 2014
This paper presents a new scheme for power transformers differential protection, in which the concept of the Park's instantaneous differential powers is introduced. The proposed method is able to detect winding insulation failures and to distinguish them
A.J. Marques Cardoso, Ahmed, Ajaei, Ala, Baoming, Blume, Darwish, Drif, Drif, Díaz, Faiz, Ferrero, Gajic, Girgis, Guerreiro, Hayward, Hooshyar, Inagaki, Kasztenny, Kennedy, Lawhead, Lin, Luís M.R. Oliveira, Ma, Mekic, Monsef, Oliveira, Oliveira, Oliveira, Patterson, Phadke, Rajakovic, Rockefeller, Rockefeller, Sidhu, Sparling, Thompson, Tripathy, Tripathy, Villamagna, Wang, Wiszniewski, Yabe, Youssef, Zhalefar, Zhang   +45 more
core   +1 more source

Optimal control of single‐phase microgrid with photovoltaic and energy storage for improving operation performance and seamless state transition

Energy Conversion and Economics, Volume 6, Issue 5, Page 324-340, October 2025.
Abstract Under voltage sags, swells, stochastic load profiles and harmonic voltage distortion, conventional synchronisation mechanisms often fail to track the grid voltage immediately and accurately, leading to degraded control performance and potential power quality violations.
Shiv Shambhu Choudhary, Tripurari Nath Gupta   +1 more
wiley   +1 more source

Inrush Current Reduction of Three-Phase Transformers Using Optimal Energization Angle Control

IEEE Access
When a transformer is energized, the inrush current can reach several tens of times higher than the steady-state magnetizing current, which may cause maloperation of protective relays, voltage dips and deterioration of power quality.
Jin-Sung Cho, Sung-Jun Park, Sang-Kil Lim   +2 more
doaj   +1 more source