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Relevant bibliographies by topics / Transformer Windings

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Academic literature on the topic 'Transformer Windings'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 September 2023

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Journal articles on the topic "Transformer Windings"

1

LARIN, Vasily S., and Daniil A. MATVEEV. "Approximation of Transient Resonance Voltages and Currents in Power Transformer Windings to Determine Their Natural Frequencies and Damping Factors." Elektrichestvo 12, no. 12 (2020): 44–54. http://dx.doi.org/10.24160/0013-5380-2020-12-44-54.

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Transient interaction between power transformers and power cable lines may give rise to resonance overvoltages in the transformer primary windings. To develop protection measures against resonance overvoltages and to design transformers resistant to resonance overvoltages, it is necessary to know the natural frequencies of the transformer windings. Recent years have seen very rapid development of transformer windings high-frequency models. However, the mathematical models used in practice, which came from calculations of impulse overvoltages in transformer windings, reproduce the frequency dep

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2

Yang, Cunxiang, Yiwei Ding, Hongbo Qiu, and Bin Xiong. "Analysis of Turn-to-Turn Fault on Split-Winding Transformer Using Coupled Field-Circuit Approach." Processes 9, no. 8 (2021): 1314. http://dx.doi.org/10.3390/pr9081314.

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The turn-to-turn faults (TTF) are also inevitable in split-winding transformers. The distorted leakage field generated by the TTF current results in large axial forces and end thrusts in the fault windings as well as affecting other branch windings normal operation, so it is of significance to study TTF of split-winding transformers. In this paper, the characteristics analysis of the split-winding transformer under the TTFs of the low voltage winding at different positions are presented. A 3600 KVA four split-windings transformer is taken as an example. Then, a simplified three-dimensional sim

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3

Seheda, M. S., P. F. Gogolyuk, and Y. V. Blyznak. "High-frequency periodic processes in two-winding power transformers." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 6 (2021): 96–100. http://dx.doi.org/10.33271/nvngu/2021-6/096.

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Purpose. Mathematical modeling of high-frequency periodic processes in winding power transformers to improve the technology of their design and operation. Methodology. The methods of the formation of mathematical models for the research of high-frequency periodic processes in transformers and methods of solving systems of partial differential equations are applied. Findings. The mathematical model for the research of high-frequency periodic processes in two-winding transformers, with adequate considering of electromagnetic connections of windings and structural parameters of transformers, is c

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4

Li, Shijun, Jiayi Yang, Fumei Wu, Longfu Luo, Wendi Liao, and Jinwen Xiang. "Mathematical Model of the Integrated Filtering Reactor Windings Transformer." Journal of Physics: Conference Series 2173, no. 1 (2022): 012011. http://dx.doi.org/10.1088/1742-6596/2173/1/012011.

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Abstract The integrated filtering reactor windings transformer is designed by a special winding arrangement design scheme. The air-core reactors of the harmonic filtering devices are integrated as the transformer windings in the transformer.so as to reduce the number of the equipments and covering area, The harmonic model of this kind of winding have been shown in this paper, and the harmonic current of each winding are deduced on the basis of the self-inductance and mutual-inductance voltage equation of multi-winding transformers. At last, this paper took a 300 KVA integrated filtering reacto

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5

Azizian, Davood, Mehdi Vakilian, Jawad Faiz, and Mehdi Bigdeli. "Calculating Leakage Inductances of Split-Windings in Dry-Type Traction Transformers." ECTI Transactions on Electrical Engineering, Electronics, and Communications 10, no. 1 (2011): 17–24. http://dx.doi.org/10.37936/ecti-eec.2012101.170447.

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Calculating leakage inductances between windings of multi-winding traction transformers is one of the most important schemes in design procedure. In this paper, a new analytical method and finite element models have been introduced for electromagnetic modeling of traction transformers with four split windings. Using these methods, the leakage inductances between the split windings are calculated and the methods have been validated with the help of experimental data gathered from a typical 4000kVA cast-resin dry-type transformer. Some reformations are employed to improve the finite element resu

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6

Jyothi, B., A. Pandian, and P. Bhavana. "Fabrication and experimental analysis of multiple-winding transformers for multiphase supply." Measurement and Control 53, no. 3-4 (2020): 662–78. http://dx.doi.org/10.1177/0020294019897086.

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This paper aims to fabricate multiple-winding transformers for polyphase supply that means more than the classical three-phase supply. Usually, transformers do not change the phase, that is, from single phase to three phase or vice versa, but according to the required power applications, transformer windings are connected in such a way to get the desired phase supply. Transformers are connected to implement three or more phases, which are generally referred as polyphase or multiphase transformers. In order to obtain three-phase transformers from one single unit with respect to the required pha

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7

Popov, I. P. "MAGNETIC FLUX SCATTERING IN TRANSFORMERS." Bulletin of the Tver State Technical University. Series «Building. Electrical engineering and chemical technology», no. 4 (2020): 81–88. http://dx.doi.org/10.46573/2658-7459-2020-4-81-88.

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Existing methods do not allow measuring leakage reactance for each transformer winding separately, therefore, for simplicity, they are often assumed to be equal to each other. The purpose of the study is to substantiate the possibility of experimental determination of leakage reactance for each transformer winding separately. The dissipation reactance of each transformer winding separately can be determined by at least three experimental methods that give satisfactory agreement of the results. An almost paradoxical result – the capacitive nature of the leakage resistance of the inner winding o

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8

Avdieieva, O. А., L. V. Vakhonina, O. S. Sadovoy, R. A. Stavinskiy, and O. M. Tsyganov. "Improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation." Electrical Engineering & Electromechanics, no. 3 (May 30, 2022): 3–7. http://dx.doi.org/10.20998/2074-272x.2022.3.01.

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Introduction. With the adoption of standards to reduce losses in transformers it is necessary to change the design of transformers that remain unchanged. Further energy saving is possible with the use of non-traditional technical solutions for the improvement of transformers. Problem. In order to reduce idle losses, the curved magnetic circuits of power transformers are carried out in the form of low-volume circuits. Windings are injected into assembled magnetic conductors by shuttle machines. The shuttle of windings provides technological gaps in winding windows, which results in an increase

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9

Larin, Vasily, and Daniil Matveev. "Study of Transient Interaction in a System with Transformer Supplied from Network through a Cable: Assessment of Interaction Frequencies and Resonance Evolvement." Journal of Energy - Energija 63, no. 1-4 (2022): 252–61. http://dx.doi.org/10.37798/2014631-4185.

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Transformer together with its windings is a complex oscillatory system. The interaction between the transformer and an electric network during transients can cause the development of resonance phenomenon in the windings leading to overvoltages and the risk of transformer fault. This report presents the results of studies of resonance phenomena in transformer windings, caused by interaction with an electric network containing the feeder cable. The approach to a simple assessment of dominant oscillation frequency of a voltage in the system “feeder cable – transformer” and estimation of the reson

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10

Shi, Xinghua, Ran Wei, and Wenbin Zhang. "Research on Online Detection Method of Transformer Winding Deformation Based on VFTO Characteristics." Energies 16, no. 8 (2023): 3496. http://dx.doi.org/10.3390/en16083496.

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At present, most of the winding fault detections of transformers use offline methods, which require the entire line to be powered off or after the transformer has been shut down due to a serious fault, and they cannot detect the running status of the windings in real time and online. Since the transformer will be impacted by VFTO during operation, the VFTO is used as the excitation, and the basic principle of the frequency response method is used to propose an online detection method of transformer winding deformation based on VFTO characteristics. The finite element software is used to calcul

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Dissertations / Theses on the topic "Transformer Windings"

1

Mohamed, Ramizi. "Partial discharge signal propagation, modelling and estimation in high voltage transformer windings." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/165433/.

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The thesis concerns partial discharge (PD) propagation within a high voltage transformer winding. Location of PDs and magnitude estimation are important tools for both diagnosis and prognosis of the health of large transformers. In reality there is limited access and knowledge of a winding and consequently any practical method requires the use of estimation techniques. The approach taken in this thesis is by considering lumped circuit parameter models. Firstly, a lumped capacitive parameter model was considered and secondly a transmission line lumped parameter approach developed. A technique o

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2

Jiao, Yuhe. "CFD Study On The Thermal Performance of Transformer Disc Windings Without Oil Guides." Thesis, KTH, Kraft- och värmeteknologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102546.

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The hotspot temperature of disc windings has a close relation with the transformer age. In oil immersed transformers, oil guides are applied generally to enhance the cooling effects for disc windings. In some cases disc windings without oil guides are used. However, the lack of oil guides is expected to result in a more complicated thermal behavior of the windings, making it more difficult to predict the location and strength of the hotspot temperature (i.e. the hottest temperature in the winding). To get an improved understanding of the thermal behavior, a CFD study has been performed. This

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3

Jiao, Yuhe. "CFD Study On The Thermal Performance of Transformer Disc Windings Without Oil Guides." Thesis, KTH, Energiteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102538.

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Abd, Rahman M. S. "Identification of partial discharge sources and their location within high voltage transformer windings." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/369418/.

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This thesis is concerned with developing a new approach to high voltage transformers condition monitoring, which involve partial discharge (PD) measurement and localisation within high-voltage transformer windings. This is an important source of information for both diagnosis and prognosis of the health of power transformers. Generally, Partial discharges (PDs) existence in transformer windings are normally due to ageing processes, operational over stressing or defects introduced during manufacture. Although, the presence of PDs does not necessarily indicate imminent failure of a transformer,

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Nik, Ali Nik Hakimi Bin. "Classification and localisation of multiple partial discharge sources within high voltage transformer windings." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/415793/.

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Partial discharge (PD) analysis is a common method for condition monitoring and diagnostics of power transformers, which can be used as a tool for assessing the lifespan of transformers and can detect insulation malfunctions before they lead to failure. This report describes the development of analytical tools for PD activities within HV transformer windings. In most cases, PD will occur in transformer windings due to ageing processes, operational over stressing or defects introduced during manufacture, and different PD sources have different effects on the condition and performance of power e

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6

Singh, Arvind. "A multi-layer neural network approach to identification of mechanical damage in power transformer windings." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/5677.

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Power transformers are among the most critical of assets for electric utilities, in the financial impact that their failure can bring. Asset Managers need to be able to determine the right time for replacement, refurbishment or relocation of these devices, with an increasing degree of confidence, in order to minimize the total cost of operation over the equipments’ life. This has brought a change from scheduled maintenance to condition based monitoring (CBM), where the state of the transformer is continuously monitored to evaluate its working condition. A key method of transformer CBM, which e

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7

Van, Jaarsveld Barend Jacobus. "Wide-band modelling of an air-core power transformer winding." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85823.

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Thesis (MScEng)-- Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: The objective of this project is to develop an electromagnetic model that can be used to accurately calculate the voltage distribution in a transformer winding structure when excited with standard impulse excitation waves. This voltage distribution is required during the design stage of a power transformer to ensure that the insulation is capable of withstanding the occurring electric field stresses during these tests. This study focuses on the modelling of a single disk-type power transformer winding without the presen

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8

Pinches, Derek S. "Transient voltage distribution within the windings of a power transformer connected to a gas insulated substation." Thesis, Staffordshire University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412418.

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9

Prasai, Anish. "Methodologies for Design-Oriented Electromagnetic Modeling of Planar Passive Power Processors." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/34164.

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The advent and proliferation of planar technologies for power converters are driven in part by the overall trends in analog and digital electronics. These trends coupled with the demands for increasingly higher power quality and tighter regulations raise various design challenges. Because inductors and transformers constitute a rather large part of the overall converter volume, size and performance improvement of these structures can subsequently enhance the capability of power converters to meet these application-driven demands. Increasing the switching frequency has been the traditional a

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10

Luedtke, Elin. "Minimizing Transformer No-Load Losses at Hydropower Plants : A Study of Effects from Transformer Switch-Off During Stand-by Operation." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447635.

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Hydropower is the most important power balancing resource in the Swedish electrical power system, regulating the power supply to match the load. Consequently, several hydropower plants have periods of stand-by operation where the power production is absent but where several devices within a plant are still active. Such a device is the step-up power transformer, which during stand-by operation still generates no-load energy losses. These losses can accumulate to a considerable amount of energy and costs during the long technical lifetime of the apparatus. One option to minimize these no-load en

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Books on the topic "Transformer Windings"

1

Su, Qi. Electromagnetic transients in transformer and rotating machine windings. Engineering Science Reference, 2013.

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2

B. P.M.M Allaert. Distribution of very fast-fronted surges in transformer windings. UMIST, 1991.

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3

M, Divan Deepakraj, Novotny Donald W, and United States. National Aeronautics and Space Administration., eds. High temperature co-axial winding transformers. Wisconsin Power Electronics Research Center, 1993.

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4

M, Divan Deepakraj, Novotny Donald W, and United States. National Aeronautics and Space Administration., eds. High temperature co-axial winding transformers. Wisconsin Power Electronics Research Center, 1993.

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5

W, Novotny Donald, and United States. National Aeronautics and Space Administration., eds. High temperature co-axial winding transformers: Interim report. Wisconsin Power Electronics Research Center, 1991.

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6

W, Novotny Donald, and United States. National Aeronautics and Space Administration., eds. High temperature co-axial winding transformers: Interim report. Wisconsin Power Electronics Research Center, 1991.

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7

Board, IEEE Standards, Institute of Electrical and Electronics Engineers., and National Electrical Manufacturers Association, eds. IEEE standard general requirements for dry-type distribution and power transformers including those with solid cast and/or resin-encapsulated windings. The Institute of Electrical and Electronics Engineers, 1989.

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8

IEEE Power Engineering Society. Transformers Committee. and IEEE-SA Standards Board, eds. IEEE guide for determination of maximum winding temperature rise in liquid-filled transformers. Institute of Electrical and Electronics Engineers, 2000.

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9

IEEE Power Engineering Society. Transformers Committee. and IEEE Standards Board, eds. IEEE guide for loading mineral-oil-immersed power transformers rated in excess of 100 MVA (65⁰ C winding rise). Institute of Electrical and Electronics Engineers, 1991.

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10

Benhama, Abdelkrim. Investigation of losses in foil windings of inverter fed transformers operating at medium frequencies. University of Salford, 1994.

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Book chapters on the topic "Transformer Windings"

1

Zhu, Fang, and Baitun Yang. "Windings." In Power Transformer Design Practices. CRC Press, 2021. http://dx.doi.org/10.1201/9780367816865-4.

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2

Ushakov, Vasily Ya, Alexey V. Mytnikov, Valeriy A. Lavrinovich, and Alexey V. Lavrinovich. "Probing Transformer Windings with Nanosecond Pulses." In Power Systems. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83198-1_4.

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3

He, Jian, Jiazhu Xu, Xilin Yan, Rong Jiang, and Wusheng Lan. "Calculation of Lightning Surge Distribution in Transformer Windings." In Lecture Notes in Electrical Engineering. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-4981-2_3.

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4

Yin, Lei, Zhensheng Wu, and Junfeng Gui. "Diagnostics of Transformer Windings Deformation Based on Transfer Function." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-53751-6_7.

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5

Chen, Ye, Ping Chen, Zengguang Huang, Huawei Xiao, Bintao Zhou, and Xiongfeng Huang. "Radial Deformation Status Monitoring of Dry-Type Transformer Windings." In The proceedings of the 10th Frontier Academic Forum of Electrical Engineering (FAFEE2022). Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3404-1_58.

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6

Ferreira, J. A. "Skin and Proximity Effect Losses in Transformer and Inductor Windings." In Electromagnetic Modelling of Power Electronic Converters. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-2014-3_6.

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7

Rahimpour, Ebrahim, Vahid Rashtchi, and Reza Aghmashehr. "Dimension Estimation of Transformer Windings Based on Frequency Response Measurement." In Lecture Notes in Electrical Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31676-1_119.

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8

Banaszak, Szymon, and Eugeniusz Kornatowski. "Transformer Windings Diagnostics with Combined Frequency Response Analysis and Vibroacoustic Methods." In Advances in Intelligent Systems and Computing. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-39881-0_39.

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9

Ushakov, Vasily Ya, Alexey V. Mytnikov, Valeriy A. Lavrinovich, and Alexey V. Lavrinovich. "Diagnostics of Transformer Windings Condition by Probing Pulses of Microsecond Duration." In Power Systems. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83198-1_3.

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Ferreira, J. A. "Experimental Measurement of Eddy Current Losses in Transformer Windings and Inductor Coils." In Electromagnetic Modelling of Power Electronic Converters. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-2014-3_8.

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Conference papers on the topic "Transformer Windings"

1

Xie, Rong, Na Wang, Zifu Lu, Zhonglin Cheng, and Baopeng Xu. "Study on Calculation Method of Cooling Oil Flow Rate Allocation for Natural Oil Circulation Transformer." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3319.

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For the natural oil circulation power transformer, the hot spot temperature and winding temperature should be within prescribed limits so as to ensure its life and reliability. Temperature rise of inner windings not only depends on the transformer loss, but relates to oil flow closely. Therefore, whether the oil flow of transformer and oil flow distribution rules among the three windings can be predicted or not, relates to success or failure of the winding temperature rise research. According to the structural characteristics of transformer, a three-dimensional computational model including wi

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2

Xu, Jian-Xue, and Zhen-Mao Chen. "Axial Nonlinear Mechanical Vibrations of Large Power Transformer Windings During Short Circuit." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21643.

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Abstract In this paper, the axial nonlinear vibrations of the transformer winding under steady state operation case and short circuit case are studied in single degree and multi-degree models. In the case of having ampere-turn balance, the steady state response of the former model is obtained by using multi-scale method and periodic shooting method, analytically and numerically. At the same time, the computing method of Jacobi matrix in the periodic shooting method has been modified, so that the computing CPU time is saved. For multi-degree mechanical model of a single phase transformer windin

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3

Pothisarn, C., A. Ngaopitakkul, W. Pongchaisrikul, C. Apisit, and S. Jonpermpoonpol. "Behavior of Winding to Ground Fault in Transformer Windings using Discrete Wavelet Transform." In Power and Energy Systems. ACTAPRESS, 2010. http://dx.doi.org/10.2316/p.2010.701-155.

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4

Hornfeldt, S., O. Albertsson, D. Bonmann, and F. Konig. "Power Transformer With Superconducting Windings." In 1993 Digests of International Magnetics Conference. IEEE, 1993. http://dx.doi.org/10.1109/intmag.1993.642565.

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Molle, Gary M. "A New Non Destructive Method to Screen for Corona/Breakdown of a Transformer Core." In ISTFA 2005. ASM International, 2005. http://dx.doi.org/10.31399/asm.cp.istfa2005p0422.

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Abstract There is a problem with testing torroidal or encapsulated transformers for their DWV characteristics in that the core is normally inaccessible. For high voltage transformers, knowing whether or not the core is sufficiently insulated to prevent breakdown is crucial to the component reliability. If there is a lack of dielectric material between any winding set and the core, it is impossible to determine potential failure susceptibility by the normal DWV testing means. Using MILT- 27’s “Corona discharge” test circuits for this determination requires special equipment, “corona free” capac

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Tuethong, P., P. Yutthagowith, A. Kunakorn, and S. Potivejkul. "Internal failure analysis of transformer windings." In 2012 International Conference on High Voltage Engineering and Application (ICHVE). IEEE, 2012. http://dx.doi.org/10.1109/ichve.2012.6357063.

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Zhu, Weilu, Caihong Yan, and Lanying Zhao. "Stability Analysis of Large Transformer Windings." In 2010 International Conference on Electrical and Control Engineering (ICECE). IEEE, 2010. http://dx.doi.org/10.1109/icece.2010.1029.

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Oleschuk, Valentin. "Algorithms of Overmodulation Regulation of Neutral Clamped Inverters for Photovoltaics." In 12th International Conference on Electronics, Communications and Computing. Technical University of Moldova, 2022. http://dx.doi.org/10.52326/ic-ecco.2022/el.04.

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This manuscript presents results of study and research of synchronous adjustment in the overmodulation control zone of three neutral-clamped inverters (NCIs) of the specific configuration of three-phase grid-connected photovoltaic system. It has been proved, that the corresponding modification of techniques and algorithms of pulsewidth modulation (PWM) for control of NCIs, assure symmetry and advanced harmonic composition of inverter-side winding voltage of multi-winding power transformer, thereby helping to reduce losses in windings of the transformer, and to improve the efficiency of photovo

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Korenciak, Daniel, Miroslav Gutten, Matej Kucera, Milan Sebok, Tomasz Koltunowicz, and Pawel Zukowski. "Measurement on Transformer Windings by Impact Test." In 2019 12th International Conference on Measurement. IEEE, 2019. http://dx.doi.org/10.23919/measurement47340.2019.8780084.

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10

Guishu Liang, Huaying Dong, Xiaohui Wang, Xile Zhang, Haifeng Sun, and Xiang Cui. "High-frequency EMTP model of transformer windings." In 17th International Zurich Symposium on Electromagnetic Compatibility. IEEE, 2006. http://dx.doi.org/10.1109/emczur.2006.215021.

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