Results 21 to 30 of about 350,104 (214)
SWEEP FREQUENCY RESPONSE ANALYSIS (SFRA) FOR DETECTION OF TRANSFORMER MECHANICAL INTEGRITY
International Journal of Advance Engineering and Research Development, 2015 S. Gohil, B. Šeta
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A Novel Analysis of Periodic Structures Based on Loaded Transmission Lines
IEEE Journal of Microwaves, 2023 Periodically loaded transmission lines are characterized by a frequency response with regular pass and stopbands. Interestingly, each of the passbands exhibits a peculiar comb-alike behavior, in which again, nested (or internal) pass and stopbands can be
Alberto Medina-Rull +4 more
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Power transformer geometry monitoring of active parts by SFRA method [PDF]
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2014 During regular operation, power transformer windings are continuously exposed to electromechanical stresses and vibrations. Surges during lightning or short circuits may cause the weakening of the mechanical structure and the mechanical reinforcing parts
Ilić Denis +2 more
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Implementation of the SFRA method as valuable tool for detection of power transformer active part deformation [PDF]
Tehnika, 2014 The paper presents the SFRA (Sweep Frequency Response Analysis-SFRA) method for analyzing frequency response of transformer windings in order to identify potential defects in the geometry of the core and winding. The most frequent problems (recognized by
Milić Saša D., Ilić Denis M.
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Applied Sciences, 2019 The characterization of communication devices in a certain frequency band can be accelerated if a fast frequency sweep technique is used instead of a discrete frequency sweep.
Juan A. Martinez +2 more
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Measurement Science Review, 2023 The article describes the non-contact and contact analysis of 1-MVA dry power transformers with epoxy-resin insulation using an acoustic camera and frequency analyzer with automatic sweeping for low-middle frequency areas.
Gutten Miroslav +6 more
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Energies, 2020 The power transformer is a key object in the electrical power system. The working principle hasn’t changed since its discovery. The main work nowadays is focused on the rising of the reliability of transformers and lowering power losses.
Maciej Kuniewski
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Polymer Testing, 2022 A comprehensive set of guidelines on the use of the torsion pendulum for the viscoelastic characterisation of carbon black reinforced rubber is presented, including the set up selection, the post processing steps and the final evaluation of the method ...
M. Vizcaíno-Vergara +3 more
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Two-dimensional optical coherence tomography for real-time structural dynamical characterization [PDF]
, 2015 We present a two-dimensional optical coherence vibration tomography (2DOCVT) system with an ultra-precision displacement resolution of ~0.1 nm that is capable of in site real-time absolute displacement measurement of structural line vibrations ...
Yao, Ligang +3 more
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Ain Shams Engineering Journal, 2022 The electric power transformer is an essential component of an electrical power system because it regulates the voltage level to provide the best possible system operation.
Khalid H. Ibrahim +2 more
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