Relevant bibliographies by topics / Electrical transformer

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Electrical transformer'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Electrical transformer"

1

Kefalas, Themistoklis D., and Antonios Kladas. "Reduction of Power Grid Losses by Using Energy Efficient Distribution Transformers." Materials Science Forum 721 (June 2012): 269–74. http://dx.doi.org/10.4028/www.scientific.net/msf.721.269.

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The importance of distribution transformer no-load loss on the operation of modern electrical grids is often underestimated. Internationally, distribution transformer no-load loss constitutes nearly 25% of the transmission and distribution losses of electrical grids. The losses in European Union distribution transformers are estimated at about 33 TWh/year whereas, reactive power and harmonic losses add a further 5 TWh/year. In the Greek electrical grid the no-load losses of 140,000 distribution transformers are estimated at about 490 GWh/year. This paper has two goals the first one is to illustrate the significance of distribution transformer no-load loss in periods of high electric energy cost and the second goal is the presentation of a novel numerical methodology for wound core transformers no-load loss analysis, enabling to determine the economically and technically optimum transformer for every use.
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EL-KHATIB, AHMED M. "ELECTRICAL WELDING TRANSFORMER DESIGN." ERJ. Engineering Research Journal 23, no. 1 (January 1, 2000): 165–90. http://dx.doi.org/10.21608/erjm.2000.71204.

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Ziomek, Waldemar. "Transformer Electrical Insulation [Editorial]." IEEE Transactions on Dielectrics and Electrical Insulation 19, no. 6 (December 2012): 1841–42. http://dx.doi.org/10.1109/tdei.2012.6396938.

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Florkowski, Marek, Jakub Furgał, Maciej Kuniewski, and Piotr Pająk. "Overvoltage Impact on Internal Insulation Systems of Transformers in Electrical Networks with Vacuum Circuit Breakers." Energies 13, no. 23 (December 2, 2020): 6380. http://dx.doi.org/10.3390/en13236380.

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Vacuum circuit breakers are increasingly used as switching apparatus in electric power systems. The vacuum circuit breakers (VCBs) have very good operating properties. VCBs are characterized by specific physical phenomena that affect overvoltage exposure of the insulation systems of other devices. The most important phenomena are the ability to chop the current before the natural zero crossing, the ability to switch off high-frequency currents, and the rapid increase in dielectric strength recovery. One of the devices connected directly to vacuum circuit breakers is the distribution transformer. Overvoltages generated in electrical systems during switching off the transformers are a source of internal overvoltages in the windings. The analysis of the exposure of transformers operating in electrical networks equipped with vacuum circuit breakers is of great importance because of the impact on the insulation systems of switching overvoltages (SO). These types of overvoltages can be characterized by high maximum values and atypical waveforms, depending on the phenomena in the circuit breaker chambers, system configuration, parameters of electrical devices, and overvoltage protection. Overvoltages that stress the internal insulation systems are the result of the windings response to overvoltages at transformer terminals. This article presents an analysis of overvoltages that stress the transformer insulation systems, which occur while switching off transformers in systems with vacuum circuit breakers. The analysis was based on the results of laboratory measurements of switching overvoltages at transformer terminals and inside the winding, in a model medium-voltage electrical network with a vacuum circuit breaker.
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Xiang, Dong, and Fei Yu. "Characteristic Analysis of Ship Transformer Magnetizing Inrush Current and its Suppression Method." Advanced Materials Research 1070-1072 (December 2014): 1154–58. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.1154.

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Medium voltage in the electric power system of ship typically is powered by a large capacity transformer for low voltage electrical apparatus. When switching on, the primary side of transformer will produce very large current, which would endanger the safe operation of power for ships. The mechanism and characteristics of magnetizing inrush current is analyzed when the transformer switches with no load. We think that the reason caused magnetizing inrush current is transformers saturation. Pre-excitation is presented through a small volume transformer magnetizing method of suppressing the inrush current of transformer and validated by simulation and experiment.
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Hanus, Oleksii, and Kostiantyn Starkov. "STUDY OF THE NATURE OF OVERVOLTAGES IN THE ELECTRICAL NETWORK ARISING FROM VOLTAGE TRANSFORMERS." Bulletin of the National Technical University "KhPI". Series: Energy: Reliability and Energy Efficiency, no. 1 (2) (July 2, 2021): 28–36. http://dx.doi.org/10.20998/2224-0349.2021.01.05.

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A non-linear dynamic mathematical model of voltage transformer has been considered and overvoltages arising on the elements of voltage transformer equivalent circuit during transient processes have been investigated. The influence of voltage transformer secondary circuit capacitance on overvoltage multiplicity in the primary circuits and the duration of transients has been determined. The advantages of approximation of nonlinearity of voltage transformers by hyperbolic sine are used. Mathematical expressions determining the nature of changes in the forced and free components of the transient process in an electrical network with a voltage transformer have been obtained. It is shown that with the increase of the electric network capacitance the duration of the transition process damping increases and the frequency of the forced oscillations and the level of overvoltage decrease. It is proved that even small, in comparison with the primary nominal sinusoidal voltage, aperiodic components of the voltage transient process can lead to significant overvoltages during voltage transformer outages. It has been substantiated that both the secondary resistance and the switching torque influence the overvoltage multiplicity arising in the primary winding of voltage transformers. It is shown that the closed secondary winding worsens the disconnection process of non-linear inductance of voltage transformers. The values to which overvoltages increase in this case are determined. According to the results of calculations it is determined that with open secondary winding of voltage transformers the duration of transient process significantly increases. It has been found that the decrease of frequency of forced oscillations, which occurs in this case, is accompanied by an increase of currents in the primary winding of the voltage transformer, which is dangerous in terms of thermal stability of the winding insulation. It is shown, that closing the secondary winding of voltage transformers leads to significant reduction of transient damping time. It is suggested that this algorithm can be used to provide a rapid breakdown (suppression) of ferroresonant processes. The effectiveness of such a measure of stopping of ferroresonance processes as short-term shunting of secondary winding of voltage transformers has been investigated. The correlation of parameters of electric networks (capacity of busbar sections, nonlinearity of characteristics of voltage transformers, disconnection torque, etc.) at which ferroresonance process may occur and consideration of which may allow, in terms of prevention of ferroresonance processes, to identify substations (electric networks) that require more detailed research has been determined. The results of analytical studies were tested in the electric networks of JSC "Kharkivoblenergo" and used in the electricity distribution system for the selection of specific voltage transformers for certain configurations of electrical networks.
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Gong, Chen Bin, Qing Hao Wang, Gang Chen, En Lu Wang, Tian Shu Hai, Xin Yu Li, Bo Li, Xue Wang, Chen Yang Liu, and Qi Dong Zhao. "Research on Harm of Harmonics on Electrical Equipment." Advanced Materials Research 986-987 (July 2014): 1846–49. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1846.

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Through the analysis of harmonics caused by transformer, capacitor, electromagnetic voltage transformer and other accident, harmonics is an important indicator of power quality, which has been included in the “pollution" of power grid is found. In order to understand the harmonic, this paper from the concept of quality of electric energy, and then gradually extended to the field of harmonics. This paper firstly introduces the various reasons and equipment may produce harmonic, Secondly, illustrate harm of harmonic to operation of transformers, capacitors, electromagnetic voltage transformers and other electrical equipment, let more people know and understand the relevant knowledge of the harmonic, In order to save technical force and provide scientific basis for future effective harmonic.
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Abdikulova, Z. K., and E. O. Zhaparov. "СALCULATION AND CHOICE OF ELECTRIC CHART OF SUBSTATION OF THE КENTAU TRANSFORMER PLANT." BULLETIN Series of Physics & Mathematical Sciences 70, no. 2 (June 30, 2020): 141–48. http://dx.doi.org/10.51889/2020-2.1728-7901.21.

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Electric supply system in enterprises must provide with electrical supply continuity and reliability as in normal and accidental regimes, quality electro energetic, production efficiency, so in connection with these in the article there have been analyzed work regimes of substations, studied electrical net scheme for Kentau Transformer Plant’s substation, calculated plant’s loads and short circuit currents and on the base of the calculated results curried out inspection for the chosen equipment. The number of connections, reliability of power supply and prospects for development are the determining factors for choosing the electrical scheme of high-voltage switchgears. You also need to take into account the need to conduct audits and tests of switches without interruption. In our case, we have four connections: two communication lines with electrical systems and two transformers. The distribution devices of the substation of the Kentau transformer plant are connected to the transformers according to a block scheme. Electrical installations are connected to the network transformer unit or receive backup power from another substation, since in case of failure of one network, both transformers can not work with the rest of the network. Based on this, measures are proposed for the reconstruction of the substation, with the replacement of the block diagram of the switchgear with the circuit for connecting the power transformer to the switchgear by a bus bridge. Offered measurements on reconstruction of the substation by replacing block scheme of switchgears to scheme of power transformer connection with DD bus bridge. Worked out main modernization problems of the substation switchgear, done calculation and selection of distributing bus bars for arranging switchgear.
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Maximov, Serguei, Manuel A. Corona-Sánchez, Juan C. Olivares-Galvan, Enrique Melgoza-Vazquez, Rafael Escarela-Perez, and Victor M. Jimenez-Mondragon. "Mathematical Calculation of Stray Losses in Transformer Tanks with a Stainless Steel Insert." Mathematics 9, no. 2 (January 18, 2021): 184. http://dx.doi.org/10.3390/math9020184.

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At present it is claimed that all electrical energy systems operate with high values of efficiency and reliability. In electric power systems (EPS), electrical power and distribution transformers are responsible for transferring the electrical energy from power stations up to the load centers. Consequently, it is mandatory to design transformers that possess the highest efficiency and reliability possible. Considerable power losses and hotspots may exist in the bushing region of a transformer, where conductors pass through the tank. Most transformer tanks are made of low-carbon steel, for economical reasons, causing the induction of high eddy currents in the bushing regions. Using a non-magnetic insert in the transformer tank can reduce the eddy currents in the region and as a consequence avoid overheating. In this work, analytical formulations were developed to calculate the magnetic field distribution and the stray losses in the transformer region where bushings are mounted, considering a stainless steel insert (SSI) in the transformer tank. Previously, this problem had only been tackled with numerical models. Several cases were analyzed considering different non-magnetic insert sizes. Additionally, a numerical study using a two dimensional (2D) finite element (FE) axisymmetric model was carried out in order to validate the analytical results. The solved cases show a great concordance between models, obtaining relative errors between the solutions of less than two percent.
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Bulucea, Cornelia A., Doru A. Nicola, Nikos E. Mastorakis, and Carmen A. Bulucea. "Three-phase power transformer modelling in AC/DC traction substations." MATEC Web of Conferences 292 (2019): 01006. http://dx.doi.org/10.1051/matecconf/201929201006.

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Three-phase power transformer is one of the most important elements in the electric power systems, and it plays a significant role in terms of energy savings. Since the efficiency standards can be expressed in terms of electrical efficiency, in an attempt to improve the transformer efficiency, in this study an enhancement of three-phase power transformer modelling with space phasors is presented. There are established the equations with space phasors of the three-phase transformer with symmetrical compact core. This equations system can be used to analyze the dynamic regimes of three-phase transformers. In this paper have been analyzed some aspects of three-phase power transformer operation in a AC/DC traction substation.
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Dissertations / Theses on the topic "Electrical transformer"

1

Zandberg, Hermanus Andries Jakobus. "Wireless transformer condition monitoring system." Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/1186.

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The Department of Electrical Engineering in fulfilment of the requirements for the Magister Technologiae in Electrical Engineering at the Cape Peninsula University of Technology November 2013
Pole mounted transformers (PMT) in rural areas present an opportunity for local utilities to do current monitoring on these systems. These transformers are exposed to abnormal amounts of stress due to the vast power demand in these areas. The aim of this study is to develop a more cost-effective condition monitoring system. Transformer current monitoring can be a dangerous practice if not done by suitably trained utility electricians. Hence this study is partly aimed at the elimination of hazardous working environments associated with manual electrical measurements. An investigation to determine a safe and cost-effective way to obtain the electrical measurements required from PMTs is undertaken. Although current measurements can be done with a current clamp-on meter, these measurements still take place at the phases of the transformer and are unsafe. The possibility of implementing wireless data gathering on current clamp-on meters is therefore investigated. This is made possible by a wireless sensor node (WSN) which gathers information and transmits it wirelessly to a WSN base station. This wireless solution is battery powered, necessitating battery replacements, therefore leading to the investigation of magnetic fields, magnetic materials and magnetic induction. A current clamp able to generate a high voltage (HV) output with minimal magnetic field strength is developed. The magnetic fields produced by the transformer’s phase cables are used to generate an alternating voltage. With the help of a microcontroller and an energy harvesting circuit, this voltage is converted and used to charge supercapacitors. The magnetic fields are also used to determine the current flow in the transformer phase cables when the device is not in energy harvesting mode. The device will then undergo comprehensive laboratory testing to determine its accuracy and durability, and is then used to do ‘real life’ current measurements, the results of which are compared against an off-the-shelf current monitoring device.
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Beckers, Peter C. "Design of a Self Regulated and Protected Electrification Transformer." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/335.

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O'Sullivan, Francis M. (Francis Martin) 1980. "A model for the initiation and propagation of electrical streamers in transformer oil and transformer oil based nanofluids." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40504.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.
Includes bibliographical references (p. 305-309).
The widespread use of dielectric liquids for high voltage insulation and power apparatus cooling is due to their greater electrical breakdown strength and thermal conductivity than gaseous insulators, while their ability to conform to complex geometries and self-heal means that they are often of more practical use than solid insulators. Transformer oil is a particularly important dielectric liquid. The issues surrounding its electrical breakdown have been the subject of extensive research. Much of this work has focused on the formation of electrical streamers. These are low-density conductive structures that form in regions of oil that are over-stressed by electric fields on the order of 1 x 108 (V/m) or greater. Once a streamer forms it tends to elongate, growing from the point of initiation towards a grounding point. The extent of a streamer's development depends upon the nature of the electrical excitation which caused it. Sustained over-excitation can result in a streamer bridging the oil gap between its point of origin and ground. When this happens an arc will form and electrical breakdown will occur. Streamers can form due to both positive and negative excitations. Positive streamers are considered more dangerous as they form at lower electric field levels and propagate with higher velocities than negative streamers. Historically, the modeling of streamer development has proved to be a very difficult task. Much of this difficulty relates to the identification of the relevant electrodynamic processes involved. In the first section of this thesis a comprehensive analysis of the charge generation mechanisms that could play a role in streamer development is presented.
(cont.) The extent of the electrodynamics associated with Fowler-Nordheim charge injection, electric field dependent ionic dissociation (the Onsager Effect) and electric field dependent molecular ionization in electrically stressed transformer oil are assessed and it is shown that molecular ionization, which results in the development of an electric field wave, is the primary mechanism responsible for streamer development. A complete three carrier liquid-phase molecular ionization based streamer model is developed and solved for a positive needle electrode excitation using the COMSOL Multiphysics finite element simulation suite. The modification of the liquid-phase molecular ionization model to account for the two-phase nature of streamer development is described and the performance of both the liquid-phase and gas/liquid two-phase models are compared with experimental results reported in the literature. The second section of this thesis focuses on the insulating characteristics of transformer oil-based nanofluids. These nanofluids, which can be manufactured from a variety of materials, have been shown to possess some unique insulating characteristics. Earlier experimental work has shown that oil-based nanofluids manufactured using conductive nanoparticles have substantially higher positive voltage breakdown levels than that of pure oil. A comprehensive electrodynamic analysis of the processes which take place in electrically stressed transformer oil-based nanofluids is presented, which illustrates how conductive nanoparticles act as electron scavengers in electrically stressed transformer oil-based nanofluids. As part of this analysis, a completely general expression for the charging dynamics of a nanoparticle in transformer oil is developed.
(cont.) The solutions for the charging dynamics of a range of nanoparticle materials are presented and the implications these charging dynamics have on the development of streamers in oil-based nanofluid is explained. To confirm the validity of the electrodynamic analysis, the electric field dependent molecular ionization model for streamers in pure oil is modified for use with transformer oil-based nanofluids. This model is solved for nanofluids manufactured using conductive and insulating particles and the results that are presented confirm the paradoxical fact that nanofluids manufactured from conductive nanoparticles have superior positive electrical breakdown performance to that of pure oil. The thesis concludes by exploring the possibility of developing simplified streamer models for both transformer oil and transformer oil-based nanofluids, which are computationally efficient and can be solved quickly meaning that they can be used as practical design tools.
by Francis M. O'Sullivan.
Ph.D.
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Cargol, Timothy L. (Timothy Lawrence) 1976. "A non-destructive transformer oil tester." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/81576.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
Includes bibliographical references (leaves 62-63).
A new non-destructive test of transformer oil dielectric strength is a promising technique to automate and make more reliable a diagnostic that presently involves intensive manual efforts. This thesis focuses some of the issues that must be understood to bring the test from the laboratory to the field. Emphasis is placed on reliability and safety by exploring any effect the test has on the transformer oil, the mechanical parameters necessary to give optimal reliability, and failsafe electronics.
by Timothy L. Cargol.
M.Eng.
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Schlicker, Darrell Eugene. "Flow electrification in aged transformer oils." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38844.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
Includes bibliographical references (p. 317-348).
by Darrell Eugene Schlicker.
M.S.
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Cho, Sung Don. "Parameter estimation for transformer modeling /." Available online. Click here, 2002. http://sunshine.lib.mtu.edu/ETD/DISS/chosd/SungCho.pdf.

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Siebrits, F. B. (Francois Bart). "Field implementation of a transient voltage measurement facility using HV current transformers." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53426.

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Thesis (MScEng)--University of Stellenbosch, 2003.
ENGLISH ABSTRACT: The bandwidth of standard HV measurement devices such as capacitive voltage transformers is too limited in order to measure wideband phenomena. This thesis is concerned with the investigation into a non- intrusive HV transient voltage measurement facility using standard substation HV current transformers (CI's) configured in a transconductance topology. The sensing, summation and integration of the CT capacitive earth currents are investigated. This thesis also reports on the development of a optically isolated link using optical fibre for signal transfer and a computer based data acquisition system.
AFRIKAANSE OPSOMMING: Standaard hoogspannings (HS) meettoerusting soos kapasitiewe spannmgs transformators het beperkte bandwydte vir die meet van wyeband verskynsels. Hierdie tesis handel oor die implementering van 'n HS meetstelsel wat op meinbrekende wyse oorgangsverskynsels meet deur middel van HS stroomtransformators wat in 'n transkonduktansie topologie gekonfigureer is. Die meet, sommasie en integrasie van kapasitoewe grondstrome word ondersoek. Hierdie tesis doen ook verslag aangaande die ontwikkeling van 'n optiese geisoleerde koppelvlak wat gebruik word vir seinoordrag en 'n rekenaar gebasseerde data versamelaar.
pdv201406
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Jagers, Janine Norma. "Comparing the reliability of older and newer transformer designs." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/11059.

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This dissertation describes the findings of an investigation that was conducted to determine if the reliability of older designs was significantly different from newer designs, and whether the observed differences (if any) were the result of developments in design, manufacture and technology of transformers during different periods.
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Archer, Dale S. "An adaptive thermal module for transformer monitoring." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/11992.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1988.
Includes bibliographical references (leaves 132-133).
by Dale S. Archer.
M.S.
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Mouayad, Lama. "Monitoring of transformer oil using microdielectric sensors." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/39497.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.
Includes bibliographical references.
by Lama Mouayad.
M.S.
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Books on the topic "Electrical transformer"

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Transformer exam calculations. Orlando, FL: Code Electrical Classes & Bookstore, 1989.

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Tom, Henry. Transformer exam calculations. [Winter Park, Fla.]: Henry Publications, 2002.

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Electrical machinery and transformer technology. Fort Worth: Saunders College Pub., 1994.

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Ball, Norman R. Ferranti-Packard: Pioneers in Canadian electrical manufacturing. Montreal: McGill-Queen's University Press, 1994.

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National Association of Corrosion Engineers. Maintenance painting of electrical substation apparatus includingflow coating of transformer radiators. Houston: NACE, 1997.

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National Association of Corrosion Engineers. Maintenance painting of electrical substation apparatus including flow coating of transformer radiators. Houston: NACE, 1995.

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Dasgupta, Indrajit. Power transformers quality assurance. New Delhi: New Age International (P) Ltd., Publishers, 2009.

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Pansini, Anthony J. Electrical transformers and power equipment. Englewood Cliffs, N.J: Prentice Hall, 1988.

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Electrical transformers and rotating machines. Albany: Delmar Publishers, 1999.

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Herman, Stephen L. Electrical transformers and rotating machines. 2nd ed. Clifton Park, NY: Thomson Delmar Learning, 2005.

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Book chapters on the topic "Electrical transformer"

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Patel, Mukund R. "Transformer." In Shipboard Electrical Power Systems, 139–66. 2nd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003191513-6.

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Morris, Noel M. "The Transformer." In Mastering Electrical Engineering, 271–85. London: Macmillan Education UK, 1991. http://dx.doi.org/10.1007/978-1-349-12230-1_14.

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Morris, Noel M. "The Transformer." In Mastering Electrical Engineering, 271–85. London: Macmillan Education UK, 1985. http://dx.doi.org/10.1007/978-1-349-18015-8_14.

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Morris, Noel M. "The Transformer." In Electrical Circuit Analysis and Design, 198–217. London: Macmillan Education UK, 1993. http://dx.doi.org/10.1007/978-1-349-22560-6_9.

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Makarov, Sergey N., Reinhold Ludwig, and Stephen J. Bitar. "Electric Transformer and Coupled Inductors." In Practical Electrical Engineering, 589–650. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-96692-2_12.

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N. Makarov, Sergey, Reinhold Ludwig, and Stephen J. Bitar. "Electric Transformer and Coupled Inductors." In Practical Electrical Engineering, 577–638. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-21173-2_12.

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Salam, Md Abdus. "Transformer: Principles and Practices." In Fundamentals of Electrical Power Systems Analysis, 45–109. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3212-2_2.

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Rietveld, Gert, Ernest Houtzager, Dennis Hoogenboom, and Gu Ye. "Reliable Power Transformer Efficiency Tests." In Lecture Notes in Electrical Engineering, 113–25. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5600-5_10.

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Krishna, S. "Transformer, Transmission Line, and Load." In SpringerBriefs in Electrical and Computer Engineering, 45–72. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-1847-0_2.

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Sharma, Shivam, Ruhul Amin Chaudhary, and Kamalpreet Singh. "Evolution in Solid-State Transformer and Power Electronic Transformer for Distribution and Traction System." In Lecture Notes in Electrical Engineering, 1367–83. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-5802-9_115.

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Conference papers on the topic "Electrical transformer"

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Lebedev, Vladimir. "Transformer basics." In 2007 Electrical Insulation Conference and Electrical Manufacturing Expo (EIC/EME). IEEE, 2007. http://dx.doi.org/10.1109/eeic.2007.4562642.

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Rapp, Kevin J., Alan Sbravati, John Vandermaar, and Martin Rave. "Evaluation of Transformer Components for High Temperature Transformers." In 2018 IEEE Electrical Insulation Conference (EIC). IEEE, 2018. http://dx.doi.org/10.1109/eic.2018.8481066.

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Haritha, V. V. S. S., T. R. Rao, Amit Jain, and M. Ramamoorty. "Thermal modeling of electrical utility transformer." In 2009 International Conference on Power Systems. IEEE, 2009. http://dx.doi.org/10.1109/icpws.2009.5442724.

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Neumayer, M., T. Bretterklieber, and H. Zangl. "Bayesian estimation of electrical transformer parameters." In 2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, 2014. http://dx.doi.org/10.1109/i2mtc.2014.6860798.

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Robinson, Michael C., Sara E. Wallace, David C. Woodward, and Gene Engstrom. "US Navy Power Transformer Sizing Requirements Using Probabilistic Analysis." In SNAME Maritime Convention. SNAME, 2005. http://dx.doi.org/10.5957/smc-2005-p22.

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Sizing power transformers in US Navy ships is an issue that surfaced in the design of a new Amphibious Assault Ship. Previous methods averaged the power output from generators over each transformer and calculated load based on a demand factor curve. This technique is not accurate enough in the contract design stages or for zonal architectures since it artificially averages the electrical loads. The proposed methodology uses a systems engineering approach, applying a probabilistic (Monte Carlo) analysis of the electrical loads at each transformer, based on the Electrical Load Analysis (ELA). This methodology will allow the designer to incorporate risk mitigation into a radial or zonal electrical system design to verify adequacy and reduce cost through probability based transformer sizing.
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Ban˜o´ Azco´n, Alberto, and Jose´ Mollera Barriga. "Electrical Network Modeling and Electrical Transfer Simulation of C.N. Asco´ I and C.N. Asco´ II, to Obtain Voltage and Frequency Limit Values Allowing the Electrical Transfer From the Main Generator to the External 110 kV Power Grid." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75546.

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Broadly speaking, a simple electrical diagram of Asco´ I and Asco´ II power nuclear plants could be two power supply bus bars for general equipment classified No-1E, three power supply bus bars class No-1E for the Reactor Coolant Pumps (RCP) and two more bus bars classified 1E for safety related equipment. In normal operating mode, all the five power supply bus bars class No-1E are connected to the main generator (GP1) through two unit transformers (TAG1/2), while the two class 1E power supply bus bars are always connected to an external 110 kV power grid through two auxiliary transformer (TAA1/2). The main generator supplies power to an external 400 kV grid through the main transformer (TP1). The main circuit breaker is placed between the high voltage side of the main transformer and the 400 kV grid. With this configuration, the appearance of an abnormal condition that originates the trip of the main generator and the opening of the main circuit breaker from the external network, involves an electric transfer of the supply bus bars connected to the turbo generator to the external 110 kV power grid. The electric transfer to the external 110 kV power grid will be only possible if the frequency and voltage values are within the allowed range allowed by the grid’s protective relays. Two kinds of electrical transfers are possible: fast transfers and slow transfers. It will be necessary then to evaluate the limit values of voltage and frequency of the power grid that makes the electrical transfer possible in each case. In order to obtain the limit values previously mentioned, the electric system of the plant has been modeled. Different scenarios have been analyzed, taking into account the dynamic behavior of the system components and the delay of the protective relays actuation, verifying the electrical transfer for those situations. This analysis will give enough information to take the correct decisions for future design modifications, and it will assure that the electrical transfer will be done always with success.
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Fuj, N., S. Kanamitsu, and T. Mizuma. "Characteristics in transformer operation mode of linear motor-transformer apparatus." In 2010 XIX International Conference on Electrical Machines (ICEM). IEEE, 2010. http://dx.doi.org/10.1109/icelmach.2010.5608331.

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Schijndel, Arjan, Jos Wetzer, and P. A. A. F. Wouters. "Forecasting Transformer Reliability." In 2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena. IEEE, 2006. http://dx.doi.org/10.1109/ceidp.2006.311998.

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Shojaei, Ali, and Geza Joos. "A modular solid state transformer with a single-phase medium-frequency transformer." In 2013 IEEE Electrical Power & Energy Conference (EPEC). IEEE, 2013. http://dx.doi.org/10.1109/epec.2013.6802940.

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Yu, Guiyin, and Lu Zhang. "Application of electrical transformer online monitoring system." In 2010 International Conference on Intelligent Control and Information Processing (ICICIP). IEEE, 2010. http://dx.doi.org/10.1109/icicip.2010.5564898.

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Reports on the topic "Electrical transformer"

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Radhakrishnan, B., H. Buswell, and M. Ferringer. Electrical Core Transformer Using Wire Magnetic Components. Office of Scientific and Technical Information (OSTI), June 2010. http://dx.doi.org/10.2172/983004.

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Harrie R. Buswell, PhD, PhD Dennis Jacobs, and Steve Meng. Electrical Core Transformer for Grid Improvement Incorporating Wire Magnetic Components. Office of Scientific and Technical Information (OSTI), March 2012. http://dx.doi.org/10.2172/1036998.

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Clem, Paul, Ellie Wang, and Joseph Kotulski. EMP-Resilient Electric Grid Transformer Analysis. Office of Scientific and Technical Information (OSTI), October 2020. http://dx.doi.org/10.2172/1684647.

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Hansen, Clifford, Thomas Catanach, Austin Glover, Jose Huerta, Zach Stuart, and Ross Guttromson. Modeling Failure of Electrical Transformers due to Effects of a HEMP Event. Office of Scientific and Technical Information (OSTI), July 2020. http://dx.doi.org/10.2172/1644736.

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Cutler, Dylan S., Willy G. Bernal Heredia, and Jesse D. Dean. Case Study: Laboratory and Field Evaluation of Circuit-Level Electrical Submetering with Wireless Current Transformers. Office of Scientific and Technical Information (OSTI), June 2019. http://dx.doi.org/10.2172/1530174.

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McBride, S. PCB (polychlorinated biphenyl) sampling of transformers and electrical devices at Norfolk Naval Base, Norfolk, Virginia. Office of Scientific and Technical Information (OSTI), March 1990. http://dx.doi.org/10.2172/7227477.

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Hsieh, Mei-Li, Eung-Gi Paek, Charles L. Wilson, and Ken Y. Hsu. Directionality of an electrically-addressable spatial light modulator and its application to a joint transform correlator. Gaithersburg, MD: National Institute of Standards and Technology, 1998. http://dx.doi.org/10.6028/nist.ir.6273.

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Pollock, Wilson. Pivot the Future Makers: Building our People and Places. Edited by Musheer O. Kamau, Sasha Baxter, and Golda Kezia Lee Bruce. Inter-American Development Bank, April 2021. http://dx.doi.org/10.18235/0003188.

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Pivot is a movement of radical ideas for the Caribbean of the future. In 2020, the IDB and its partners (Caribbean Climate Smart-Accelerator (CCSA), Destination Experience (DE), and Singularity University) launched The Pivot Movement and asked the people of the Caribbean to think of big ideas to transform the region. A small group came together at The Pivot Event to design 9 moonshots for electric vehicles, digital transformation and tourism. Pivot: The Future Makers is a comic book produced by the Pivot partners and illustrated by Caribbean artists. In it, the 9 moonshots have been developed into fictional stories as a simple and powerful means of conveying possible, probable futures, to help us visualize the Caribbean in 2040.
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The foreman for an electrical construction and maintenance company in Texas was electrocuted after grabbing energized bayonet fuse in a live front transformer. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, October 1999. http://dx.doi.org/10.26616/nioshsface99tx202.

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Health hazard evaluation report: HETA-2009-0154-3101, evaluation of magnetic field exposure to office employees from an electrical transformer, Lebanon Correctional Institute, Lebanon, Ohio. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, January 2010. http://dx.doi.org/10.26616/nioshheta200901543101.

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