Results 11 to 20 of about 7,742,937 (292)

Influence of harmonic on loss and temperature rise of mine-used dry-type transformer

open access: yesGong-kuang zidonghua, 2016
In order to accurately analyze influence of harmonic on loss and temperature rise of transformer, a two-dimensional model of dry-type transformer was established firstly, and leakage magnetic field and harmonic loss in the dry-type transformer were ...
ZHU Jingjing   +3 more
doaj   +2 more sources

Evaluation of Lightning Impulse Test by Frequency Response Analysis [PDF]

open access: yes, 2006
In this work are presented the basis for improving the interpretation of transformer lightning impulse test and the development of a graphical user interface system, which allows comparisons of time domain data and frequency response.
Jorge Ramirez   +3 more
core   +3 more sources

Analysis of Winding Vibration Characteristics of Power Transformers Based on the Finite-Element Method

open access: yesEnergies, 2018
The winding is the core component of a transformer, and the technology used to diagnose its current state directly affects the operation and maintenance of the transformer.
Xiaomu Duan   +4 more
doaj   +1 more source

Investigation on Vibration Characteristics of Amorphous Metal Alloy Core Dry-type Distribution Transformer

open access: yesCES Transactions on Electrical Machines and Systems, 2022
Large power transformers have severe vibration and noise problems. Thus, as the source of noise, it is vitally important to have accurate core vibration calculations.
Kammeugue Noubissi Romaric   +2 more
doaj   +1 more source

Partial discharge pattern recognition method for mine-used dry-type transformer

open access: yesGong-kuang zidonghua, 2019
In order to improve recognition accuracy of partial discharge pattern of mine-used dry-type transformer, a partial discharge pattern recognition method for mine-used dry-type transformer was proposed.
TANG Jianwei   +5 more
doaj   +1 more source

Optimization of transformer parameters at distribution and power levels with hybrid Grey wolf-whale optimization algorithm

open access: yesEngineering Science and Technology, an International Journal, 2023
Oil-type transformers (OTT) are used more than dry-type transformers, based on cost in the transmission and distribution of electrical energy. Therefore, this usage density increases the importance of cost in OTT. Weight is important in transformer cost.
Murat Toren
doaj   +1 more source

Common dry-type transformer faults related to sound and their handling methods.

open access: yes, 2023
Common dry-type transformer faults related to sound and their handling methods.
Jinzhan Liu (17409791)   +3 more
core   +1 more source

Efficiency and Cost Based Multi-optimization and Thermal/Electromagnetic Analyses of 3-Phase Dry-Type Transformer

open access: yes, 2020
Dry-type transformers are one of the most significant devices used in the conversion, transmission and management process of the electricity. In practice, the electrical energy conversion entails energy losses such as heat, electromechanical and ...
Demirdelen, Tugce, Esenboga, Burak
core   +1 more source

A Comparative Analysis Applied to the Partial Discharges Identification in Dry-Type Transformers by Hall and Acoustic Emission Sensors

open access: yesSensors, 2022
Dry-type insulated transformers stand out for their higher applicability in substations, high-voltage instrumentation systems, and electrical installations. In this machine, the insulation system is constituted of dielectric materials such as epoxy resin
Bruno Albuquerque de Castro   +5 more
doaj   +1 more source

Analysis of the Electromechanical Characteristics of Power Transformer under Different Residual Fluxes

open access: yesEnergies, 2021
When the electromagnetic transients occur in a power transformer, an inrush current is generated in its winding. The inrush current not only affects the performance of the transformer windings, but also affects the lifetime of the transformer.
Wenqi Ge   +4 more
doaj   +1 more source

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