Results 11 to 20 of about 2,280 (259)

Real-time calculation method of transformer winding temperature field based on sparse sensor placement

open access: yesCase Studies in Thermal Engineering, 2023
The Real-time obtain of the transformer winding temperature field is of great significance for understanding the operation status of the transformer. Limited by the spatial sampling rate of the sensor measurement method and the computational efficiency ...
Tao Wu   +4 more
doaj   +1 more source

Health Analysis of Transformer Winding Insulation Through Thermal Monitoring and Fast Fourier Transform (FFT) Power Spectrum

open access: yesIEEE Access, 2021
This paper presents a health analysis technique for transformer winding insulation through thermal monitoring and Fast Fourier Transform (FFT) power spectrum.
Muhammad Aslam   +6 more
doaj   +1 more source

Two Winding Transformer Equivalent Model of Three Winding Transformers for MATPOWER

open access: yesDEStech Transactions on Engineering and Technology Research, 2020
MATPOWER is one of wide used authoriterative open source software of power flow calculation in the world. However, it only provides a model of the two-winding transformer thus limiting its application in power system with a three-winding transformer which is very popular in the power system.
MD MUNNA TALUKDER   +3 more
openaire   +2 more sources

Optimization of Transformer Winding Deformation Assessment Criterion Considering Insulation Aging and Moisture Content

open access: yesEnergies, 2020
Frequency response analysis is widely used to diagnose transformer winding deformation faults due to its high sensitivity, strong anti-interference capability, and equipment portability, but the results of frequency response analysis can be affected by ...
Qian Wu   +7 more
doaj   +1 more source

Highly Efficient HBT Power Amplifier Using High-Q Single- and Two-Winding Transformer With IMD3 Cancellation

open access: yesIEEE Access, 2021
This paper presents a highly efficient InGaP/GaAs HBT power amplifier (PA) implemented using a proposed high- $Q$ single- and two-winding transformer.
Hyunjin Ahn   +3 more
doaj   +1 more source

Experimental studies on power transformer model winding provided with MOVs

open access: yesJournal of Electrical Systems and Information Technology, 2017
Surge voltage distribution across a HV transformer winding due to appearance of very fast rise time (rise time of order 1 μs) transient voltages is highly non-uniform along the length of the winding for initial time instant of occurrence of surge.
G.H. Kusumadevi, G.R. Gurumurthy
doaj   +1 more source

Simulation and Analysis of 3 D Transient Leakage Magnetic Field and Electromotive Force of Power Transformer

open access: yesJournal of Harbin University of Science and Technology, 2021
In order to analyze the transient magnetic field and transient electrodynamic characteristics of transformer windings under shorL-circuit impact, according to the Lheo1-y of leakage magnetic field of transformer windings and the principle of calculation ...
MU Long   +5 more
doaj   +1 more source

Research on mechanical fault diagnosis method of power transformer winding

open access: yesThe Journal of Engineering, 2018
Today, the accuracy of the fault mechanical diagnosis of transformer winding is low and the fault types cannot be judged, this study proposes a machine condition diagnosis method of transformer winding based on the combination of short-circuit reactance ...
Zhang Bin   +4 more
doaj   +1 more source

Application of operational modal analysis to investigate transformer vibration patterns

open access: yesIET Generation, Transmission & Distribution, 2022
This paper develops an operational modal analysis application framework for vibration measurement‐based condition monitoring of transformer winding structure.
Jakob Pallot   +3 more
doaj   +1 more source

Learning to optimise wind farms with graph transformers

open access: yesApplied Energy, 2023
This work proposes a novel data-driven model capable of providing accurate predictions for the power generation of all wind turbines in wind farms of arbitrary layout, yaw angle configurations and wind conditions. The proposed model functions by encoding a wind farm into a fully-connected graph and processing the graph representation through a graph ...
Siyi Li   +3 more
openaire   +4 more sources

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