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Transformer winding deformation detection analysis and typical cases
2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE), 2016The transformer is subjected to the outlet and near area short circuit impact or the transportation in the collision, the winding may appear the distortion. After the winding deformation, the transformer winding may be local insulation failure, in the operation of the formation of partial discharge, under the action of lightning and other over-voltage,
Yun Liu +6 more
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Transformer Winding Deformation Diagnosis by Induced Voltage Test
Applied Mechanics and Materials, 2014During induction voltage test, the changes of data such as output voltage and output current reflects the changes of the equivalent parameters of the transformer. Through the analysis of testing data, diagnosis of winding deformation of the transformer can be made. Transformer condition evaluation can be provided on the basis of these data.
Ding Jun Wen +3 more
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Practical challenges in online transformer winding deformation diagnostics
2011 2nd International Conference on Electric Power and Energy Conversion Systems (EPECS), 2011Monitoring and diagnosis of transformers have been investigated and discussed for many years. While transformer routine tests indicate electrical and also insulation weakness or defects, Frequency Response Analysis (FRA) as a modern test can indicate mechanical defects in transformer active part.
Mehdi Bagheri +3 more
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Improved Power Transformer Winding Deformation Fault Diagnosis Method
Applied Mechanics and Materials, 2014according to analysing the generation principle of transformer winding deformation and its impact on the vibration signal, and make a large number of trial, it can be found in addition to the fundamental frequency component that can reflect the failure, the new characteristic frequency which conclude 50Hz frequency component and some of its harmonic ...
Hong Zhong Ma +3 more
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Transformer winding deformation diagnostics techniques with statistical approach
2015 International Conference on Communications and Signal Processing (ICCSP), 2015Monitoring the health of power transformer is important for the reliability of electrical power supply. Conventional tests carried out on power transformers can only detect damage of permanent nature. Frequency Response Analysis (FRA) is found to be a useful tool for reliable detection of incipient mechanical fault in a transformer.
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Monitoring of transformer winding deformation by CPRA method
2012 IEEE International Conference on Condition Monitoring and Diagnosis, 2012In this paper new method for transformer winding statement have been considered. The practical results of defect location in the insulation of high voltage equipment in laboratory and real substations conditions are presented and discussed. Theoretical background and technical implementation of the method of CPRA (Corona Pulses Response Analysis ...
V. Rusov, S. Zhivodernikov
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Deformed Shape Wind Analysis of Tensile Membrane Structures
Journal of Structural Engineering, 2016AbstractConventionally, the pressure coefficients of tensile membrane structures are determined in wind tunnels on rigid models and the effect of the typically large deformations of the membranes on the pressure coefficients is not taken into account. The aim of the current research is to analyze the effect of the displacements of membrane structures ...
Hincz, Krisztián, Gamboa-Marrufo, M.
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Deformations of pressure vessel domes in asymmetric winding
Mechanics of Composite Materials, 2006The deformation of pressure vessel domes in asymmetric winding with the use of two families of yarns is accompanied by shear deformations and torsion. For the case of large deformations, a system of equations for describing the stress-strain state of an asymmetrically reinforced netlike shell of revolution loaded with an internal pressure is obtained ...
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PVC windows deformation under wind and temperature loads
AIP Conference Proceedings, 2023Ivan Aksenov +2 more
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