Results 31 to 40 of about 140 (122)

Partial Discharge Pattern Recognition Based on Time‐Frequency Multi‐Scale Residual Attention Network

IET Science, Measurement &Technology, Volume 20, Issue 1, January/December 2026.
A time‐frequency multi‐scale residual attention network (TFMRAnet) was designed to analyze partial discharge (PD) signals. The network comprises an adaptive denoising network based on multi‐scale residual attention, a frequency‐domain recognition network, and a decision fusion module based on Dempster‐Shafer (D‐S) evidence theory.
Yunguang Gao, Haohua Jia, Zhipeng Lei, Wenjie Zhang, Junqiang He   +4 more
wiley   +1 more source

Distribution of Currents in 2 × 25 kV Electric Railway Systems under Normal Conditions

International Transactions on Electrical Energy Systems, 2023
This article shows a detailed analysis of the distribution of currents in 2 × 25 kV electric railway systems under normal conditions. The network equations are clearly formulated in a way that enables the presentation of a novel simplified analytical ...
Elmer Sorrentino, Naren Gupta, Miguel Montilla-DJesus, Pablo Arriaga   +3 more
doaj   +1 more source

Design and Simulation of an Autotransformer‐Based 18‐Pulse AC‐DC Converter for Enhanced Power Quality in Vector‐Controlled Asynchronous Motor Drives

Energy Science &Engineering, Volume 13, Issue 12, Page 6221-6234, December 2025.
18‐pulse AC/DC converter with T‐connected autotransformer for feeding VCAMD. ABSTRACT Reducing harmonics in alternating current (AC) input and ripples in direct current (DC) output enhances power quality, achievable through multi‐pulse converters (MPCs). This study presents the design, simulation, and analysis (in MATLAB/Simulink) of an autotransformer‐
Mohammad Yousefzadeh, Mehrdad Ahmadi Kamarposhti, El Manaa Barhoumi, Ilhami Colak, Phatiphat Thounthong   +4 more
wiley   +1 more source

Vibration characteristics of a single‐phase four‐column auto‐transformer core excited by geomagnetically induced currents

IET Electric Power Applications
During geomagnetic storms, geomagnetically induced currents (GICs) occur in the power grid. GIC is a quasi‐direct current, which is represented by using a fixed DC current, the authors propose an approach that combines field‐circuit‐coupled and weakly ...
Wenkai Xin, Chunming Liu, Guyue Wang, Ruopu Zhan, Bing Li, Zezhong Wang   +5 more
doaj   +1 more source

TO THE PROBLEM OF HIGH-VOLTAGE EQUIPMENT NOISE DIAGNOSTICS

Известия высших учебных заведений: Проблемы энергетики, 2018
Application possibilities of electrical power equipment noise diagnostics are shown. The diagnostics possesses increased depth and the enlarged reliability of diagnosing.
N. I. Ignatev
doaj   +1 more source

The Influence of 3‐D Earth Conductivity, Geoelectric Field Polarization, and Power Grid Topology on GIC Risk

Space Weather, Volume 23, Issue 11, November 2025.
Abstract Geomagnetically induced currents (GICs) are naturally occurring electrical currents that flow through the Earth and long conductive infrastructure, such as power lines, during geomagnetic storms. GICs in the electric power grid can cause damage to electric power transformers, system failures, and wide‐scale blackouts.
Hannah G. Parry, Darcy R. Cordell, Martyn J. Unsworth, Ryan MacMullin, Ian R. Mann   +4 more
wiley   +1 more source

Specific Issues of Equivalent Longitudinal Resistances Calculation for Three Windings Transformers [PDF]

Problems of the Regional Energetics, 2015
ccomplishing the aspirations of electrical power engineering consists, nowadays, in accurately determining the operating modes. Knowing the parameters of network elements is imperative for accurate solving the power flow regimes.
Golovanov N., Porumb R., Toader C., Bulac C., Triştiu I., Seritsan G.   +5 more
doaj  

Surface and intradermal temperature responses of adults to ambient heat stress with and without cooling

Physiological Reports, Volume 13, Issue 21, November 2025.
Abstract Accurate measurement of skin temperature is crucial to understanding responses to heat. We tested the hypothesis that intradermal temperature would differ from skin surface temperature during ambient heating with and without fan and water spray (24°C).
Zachary J. McKenna, Elizabeth A. Gideon, Erin M. Harper, Taysom E. Wallace, Isa A. Farooqi, Craig G. Crandall   +5 more
wiley   +1 more source

Derivation of transformer winding equivalent circuit by employing the transfer function obtained from frequency response analysis data

IET Electric Power Applications
Precisely interpreting frequency response analysis (FRA) curves is crucial when investigating mechanical malfunctions in power transformer windings (TWs).
Zhi Zhang
doaj   +1 more source

INCREASING THE EFFICIENCY OF POWER AUTOTRANSFORMERS

Vestnik Chuvashskogo universiteta, 2023
The issues of implementing effective measures to reduce losses during the operation of power electrical equipment are of particular practical interest for electric grid and industrial enterprises. It is known that power transformers have a fairly high coefficient of performance (COP) in nominal (and close to them) modes.
Maksim G. Popov, Denis E. Petrushin, Olga A. Vasilyeva   +2 more
openaire   +1 more source