NDLI: Comprehensive vibration generation model of transformer winding under load current

Content Provider	IET Digital Library
Author	Zhang, Fan Ji, Shengchang Shi, Yuhang Ren, Fuqiang Zhan, Cao Zhu, Lingyu
Abstract	This study proposes a comprehensive model to investigate winding vibration characteristics. The radial vibration model is firstly established based on the Euler–Bernoulli beam theory, and the radial acceleration is found to be the second derivative of deflection under the quasi-static load. The fluid-loading effect of oil on winding vibration is then investigated through experimental modal analysis and finite element method. This effect leads to the decrease of natural frequencies and the increase of damping ratios. The harmonic response of axial winding vibration at 100 Hz shows the symmetry distribution that vibration on the one quarter and three-quarters of the winding height are larger than other positions. The radial acceleration is not affected by the clamping pressure, whereas the axial acceleration is in a reciprocal relationship with it.
Starting Page	1563
Ending Page	1571
Page Count	9
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 9, May (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.5688
Journal	IET Generation, Transmission & Distribution
Publisher Date	2019-01-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Axial Acceleration Axial Winding Vibration Beams (structures) Comprehensive Model Damping Euler-Bernoulli Beam Theory Experimental Modal Analysis Finite Element Analysis Finite Element Method Fluid-loading Effect Frequency 100.0 Hz General Shapes And Structure Load Current Mechanical Component Mechanical Engineering Modal Analysis Numerical Analysis Numerical Approximation And Analysis Quasistatic Load Radial Acceleration Radial Vibration Model Transformer Windings Vibrations Vibrations And Shock Wave Winding Height Winding Vibration Characteristic
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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