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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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The Study of Two Models for Power Transformer Winding Deformation
2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE), 2020Transformer, one of the most important components in a power system, functions as the vital to the safety of power supply system. However, great economic losses and industrial accidents can result from transformer winding deformation. Therefore, it is quite essential to use a precise transformer model when taking simulation to diagnose the transformer ...
Danyang Zheng +5 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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Modeling of frequency response of transformer winding with axial deformations
Archives of Electrical Engineering, 2014Abstract One of important methods used for diagnostics of a transformer’s active part is Frequency Response Analysis (FRA). It allows to determine the mechanical condition of windings, their displacements, deformations and electric faults, as well as some problems with internal leads and connections, core and bushings.
K.M. Gawrylczyk, S. Banaszak
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Method for detecting system on power transformer winding deformation
2009 International Conference on Electrical Machines and Systems, 2009This paper presents a detecting system on power transformer winding deformation which can enhance the diagnostic accuracy to a large degree. The Impulse Frequency Response Analysis (IFRA) method is developed for generating frequency response analysis trace (FRA trace) and Support Vector Machine (SVM) algorithm is used for predicting the transformer ...
Shaohua Ma, He Ren
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Research on new method of transformer winding deformation detection
FerroelectricsWenbin Zhang, Xiangyu Tan, Gang Ao
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Frequency response analysis to investigate deformation of transformer winding
IEEE Transactions on Dielectrics and Electrical Insulation, 2015This paper discusses the application of Nyquist plot and two statistical indicators to analyze the frequency response of power transformers. Five cases are presented based on both simulations and measurements. These include two types of winding deformation, namely tilting and bending of conductors.
Yousof, M. Fairouz M. +2 more
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An on-line monitoring method for winding deformation of power transformers
2013 IEEE 8th Conference on Industrial Electronics and Applications (ICIEA), 2013A novel method for on-line monitoring winding deformation of transformers is proposed. Short-circuit reactance (SCR) of transformers in service is calculated through online measurement of the voltage and current at primary side and secondary side with different loads, which could reflect the deformation of transformer windings.
null Xing-ping Liu, null Min-you Chen
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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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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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