Experimental research of vibration sweep frequency response analysis to detect the winding deformation of power transformer

Wang, F. H.; Xu, Jiawei; Jin, Z. J.; Gui, Shunsheng

doi:10.1109/tdc.2010.5484425

Cited by 10 publications

(7 citation statements)

References 3 publications

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“…Researchers have taken a large number of simulations to obtain the resonance frequency of the transformer core so as to avoid resonance and reduce the noise of the transformer [7]. On the other hand, some researchers adopt magnetostrictive elongation data to calculate the corresponding magnetostrictive forces according to the stress‐strain constitutive relations, and then the vibration displacement of the core can be obtained [8–10]. The magnetostriction of grain oriented silicon steel sheet has a complex non‐linear relationship with the magnetic field [11], the anisotropy of silicon steel [12], the pressed force, and annealing temperature have effects on the properties of magnetisation and magnetostriction of silicon steel sheet [13, 14].…”

Section: Introductionmentioning

confidence: 99%

Vibration of saturable reactor core used in HVDC converter valve system

Zhang

2017

J. eng.

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Section: Introductionmentioning

confidence: 99%

Vibration of saturable reactor core used in HVDC converter valve system

Zhang

2017

J. eng.

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“…Magnetostriction is taken into consideration in the energy system at the same time. On the other hand, some researchers [11, 12] adopt experimental data from magnetostrictive elongation to calculate the corresponding set of magnetostrictive forces according to the stress–strain constitutive relations, and then obtain the core vibration displacement. However, the researches almost are focused on transient dynamic analyses and harmonic analysis seems to be lacking, which is important in the research of vibrations and sound field.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic vibration noise analysis of transformer windings and core

Liu

Liao

et al. 2016

IET Electric Power Applications

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Analyses of transformer electromagnetic vibration noise are presented in this study. A finite element model is established which combines transient electromagnetic field analysis, mechanical field analysis and acoustic analysis to calculate the sound pressure level of the radiated noise around the transformer. Transient electromagnetic field analysis is performed to get the Lorentz, reluctance magnetic forces and magnetostriction according to Maxwell theory and virtual displacement principle. Mutual influence of strain and magnetisation has been considered. The main frequency components of harmonic electromagnetic excitations are analysed by Fourier transformation so as to carry out the harmonic response analysis and obtain the nodes displacements of the windings and core. The noise distribution is further calculated by acoustic analysis based on the achieved vibration data. Comparison of calculated results and measured data verifies that the combined noise calculating model is applicable for transformer noise prediction.

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“…Zhang et al (2014) have compared the frequency responses of both undeformed and radially deformed winding. Wang et al (2010) have investigated the relationship between the winding deformation and the Vibration Sweep Frequency Response (VSFR) for 220kV transformer. Hashemnia et al (2012) have simulated the frequency response signature for various mechanical faults such as axial displacement, buckling stress, disc space variation and bushing fault.…”

Section: Introductionmentioning

confidence: 99%

Transformer Winding Deformation Profile using Modified Electrical Equivalent Circuit

Muthusamy¹,

Usa²

2015

RJASET

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This study presents a generalized methodology to predict the transformer winding deformation profile through Sweep Frequency Response Analysis using Finite Element Method based Magneto Structural Analysis and proposed modified equivalent circuit. Monitoring and diagnosis of fault in any power apparatus is necessary to increase the quality life of the apparatus. In general all the power transformers are designed to withstand the mechanical forces due to short circuit faults. However, mechanical forces may exceed the specified limits during severe incidents leading to winding deformation. Winding deformation is one of the causes for the power transformer outages. In the present work, deformation profile of the winding for different short circuit currents are computed using Finite Element Method based Magneto-structural analysis. The change in circuit parameters of the deformed windings are computed using Finite Element Method based field analyses and the corresponding Sweep Frequency Responses are obtained using the modified electrical equivalent circuit. From the change in resonance frequencies, the displacement profile of the winding can be predicted which will be useful for design engineers to check the withstand capability of transformer.

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Experimental research of vibration sweep frequency response analysis to detect the winding deformation of power transformer

Cited by 10 publications

References 3 publications

Vibration of saturable reactor core used in HVDC converter valve system

Vibration of saturable reactor core used in HVDC converter valve system

Electromagnetic vibration noise analysis of transformer windings and core

Transformer Winding Deformation Profile using Modified Electrical Equivalent Circuit

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