Relevant bibliographies by topics / Transformer differential protection

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Transformer differential protection'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Transformer differential protection"

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Onah, Aniagboso John, and Edwin Ejiofor Ezema. "Transformer Differential Protection." European Journal of Engineering Research and Science 5, no. 8 (August 21, 2020): 891–98. http://dx.doi.org/10.24018/ejers.2020.5.8.2035.

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Overcurrent and earth fault protective equipment employing time grading and directional detection cannot provide correct discrimination on all power networks and in many cases clearing times for some faults would not be acceptable. Differential protection is an alternative overcurrent protective scheme, which is used to protect individual sections of networks or pieces of equipment, such as transformers, generators, e.t.c. Thus, where protection co-ordination is difficult using time delayed over current and earth fault protection, or where fast fault clearance is critical, then differential protection may be used. Kirchhoff’s first law, which states that the sum of the currents flowing to a node must be equal to the sum of the currents flowing out from it is the basic principle of the differential protection scheme. It detects the difference between the current entering a section and that leaving it. Under normal operating conditions, the current leaving the protected unit would be equal to that entering it at every instant. If the current flowing into the protected unit is the same as the current leaving, then the fault is not in the protected unit and the protective equipment or relay should not operate. If there is a difference in either the phase or magnitude between input and output, then the fault is in the protected unit and the protection should operate. This paper investigates how power transformers can be protected using the current-differential protection schemes.
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Zhang, Wenkui, Qian Tan, Pei Liu, Shihong Miao, and Liangsong Zhou. "Self-adaptive transformer differential protection." IET Generation, Transmission & Distribution 7, no. 1 (January 1, 2013): 61–68. http://dx.doi.org/10.1049/iet-gtd.2011.0739.

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Gomez-Morante, M., and D. W. Nicoletti. "A wavelet-based differential transformer protection." IEEE Transactions on Power Delivery 14, no. 4 (1999): 1351–58. http://dx.doi.org/10.1109/61.796228.

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Ozgonenel, Okan, and Serap Karagol. "Transformer differential protection using wavelet transform." Electric Power Systems Research 114 (September 2014): 60–67. http://dx.doi.org/10.1016/j.epsr.2014.04.008.

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SALIH, Bashar. "Differential Relay Protection for Prototype Transformer." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 6 (June 28, 2021): 160–64. http://dx.doi.org/10.15199/48.2021.06.30.

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Mei, Li Xue. "Transformer Differential Protection Applications of the Applicant Electronic Current Transformer." Applied Mechanics and Materials 644-650 (September 2014): 3818–20. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.3818.

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This paper mainly analyses, improvement and experiment using the device of Wuhan Hua gong Electric Automation Co., Ltd. existing. As a comparison, this paper firstly analyzes the measuring principle of electromagnetic current transformer and the saturation problem, coil measurement principle and error, a brief summary of the distinction between the two. One time, two times of converter and the merging unit as part of electronic current transformer, this paper also made some analysis. Then analyzed some improvement of transformer differential protection of electronic current transformer based on improved. Firstly, the hardware protection data interface part of, through the analysis of the reasonable selection, then it is based on transformer differential protection of electronic current transformer, the two line ratio braking curve formulation through the analysis of unbalanced current sources, make do with electromagnetic current transformer current unbalance and the ratio braking curve based on the comparative analysis. Finally, the relay protection software the program is changed the basic function of the device is tested, the test results showed that the improved protection device.
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Stanbury, Michael, and Zarko Djekic. "The Impact of Current-Transformer Saturation on Transformer Differential Protection." IEEE Transactions on Power Delivery 30, no. 3 (June 2015): 1278–87. http://dx.doi.org/10.1109/tpwrd.2014.2372794.

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Ahmed, E., and R. El-Sehiemy. "A suggested differential protection scheme for power transformer." International Review of Applied Sciences and Engineering 5, no. 2 (December 1, 2014): 91–103. http://dx.doi.org/10.1556/irase.5.2014.2.1.

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This paper integrates a Real Power Differential Scheme (RPDS) for power transformer protection. The suggested RPDS for power transformer computes the active power loci during normal operation, switching, normal, and internal, involves turn to turn, and external faults at varied load angles. The proposed RPDS concept is based on monitoring and comparing the transformers primary and secondary active and reactive powers. The dynamic response of the proposed RPDS is tested 300 MVA, 220/66 kV, Y/Δ transformer. Furthermore, the suggested scheme is simulated with the use of Matlab/Simulink then tested for various fault and switching conditions. Moreover, the RPDS is checked for inter turn fault conditions at primary and secondary sides. The evaluation of the suggested scheme confirms the superiority of the proposed scheme to distinguish internal and external faults as well as magnetizing inrush currents with good selectivity, high speed, sensitivity, stability limits and high accuracy response of the power differential scheme. Finally, the suggested scheme is able to detect correctly the turn to turn faults for wide range of fault resistances but fails at very low values.
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Iqteit, Nassim A., and Khalid Yahya. "Simulink model of transformer differential protection using phase angle difference based algorithm." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 2 (June 1, 2020): 1088. http://dx.doi.org/10.11591/ijpeds.v11.i2.pp1088-1098.

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<p class="p1">An application of phase-angle-difference based algorithm with percentage differential relays is presented in this paper. In the situation where the transformer differential relay is under magnetizing inrush current, the algorithm will be utilized to block the process. In this study, the technique is modeled and implemented using Simulink integrated with MATLAB. The real circuit model of power transformer and current transformers are considered in the simulation model. The results confirmed the effectiveness of the technique in different operation modes; such as, magnetizing inrush currents, current transformers saturation and internal transformer faults.</p>
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Sutherland, P. E. "Application of transformer ground differential protection relays." IEEE Transactions on Industry Applications 36, no. 1 (2000): 16–21. http://dx.doi.org/10.1109/28.821790.

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Dissertations / Theses on the topic "Transformer differential protection"

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Ntwoku, Stephane Ntuomou. "Dynamic transformer protection a novel approach using state estimation." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45879.

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Transformers are very important parts of any electrical network, and their size increase so does their price. Protecting these important devices is a daunting task due to the wide variety of operating conditions. This thesis develops a new protection scheme based on state estimation.The foundation upon which our protection scheme is built is the modeling of the single phase transformer system of equations. The transformer equations are composed of polynomial and differential equations and this system of equations involving the transformer's electrical quantities are modeled into a system of equations such that highest degree of each of the system's equations is quadratic―in a process named Quadratization and then integrated using a technique called Quadratic integration to give a set of algebraic companion equations that can be solved numerically to determine the health of the transformer.
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Yuping, Lu. "Intelligent technique based digital differential protection for generator-transformer unit." Thesis, City University London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410150.

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Strapko, Miroslav. "Návrh systému chránění s použitím elektronických přístrojových transformátorů (senzorů) v rozvodně vysokého napětí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219395.

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Master's thesis deals with use of electronic instrument transformers (sensors) in the protection system in medium-voltage substation. Substation consists of 2 incoming feeders, 2 outgoing feeders for motors, 2 outgoing feeders for power transformers, measuring, bus coupler and bus riser feeder. Incoming feeders are connected to distribution system E.ON by cable lines which were proposed. Protected machines (power transformers and motors with rated power) are connected to switchgear panels of UniGear ZS1 type by cable lines too. Proposed protection system is based on the short-circuit conditions, standard CSN 33 3051 recommendations as well as theoretical backgrounds acquired from technical papers and other publicated literature according to the bibliography. For selected protection functions are defined their parameters. Control, monitoring and protection functions provides REF 542plus relay. Consequently, secondary tests which are part of the commissioning, are given in the practical part of thesis. Secondary tests were performed by relay test system FREJA 300 by Megger. Results of tests are displayed in tripping characteristics.
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Assumpção, Felipe Framil. "Validation of Results of Smart Grid Protection through Self-Healing." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7468.

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This is a verification of the results of “Smart Grid Protection through Self-Healing” from the publication of Chathurika Chandraratne, et al., that proposes a protection solution for the smart grid. The paper used as reference has as the main focus on three different protections; directional overcurrent protection, overcurrent protection, and transformer protection, which are validated through ETAP software simulation of IEEE- 9 bus and 14 bus electrical power systems, the same used by the author. It was validated after repeated simulation, that just as intended, self-healing increases system agility, and it helped prevent false-tripping14 bus electrical power systems.
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Pieters, Willem Diederick. "Monitoring, protection, and voltage control of parallel power transformers based on IEC 61850-9-2 process bus." Thesis, Cape Peninsula University of Technology, 2019. http://hdl.handle.net/20.500.11838/3067.

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Thesis (MEng (Electrical Engineering)--Cape Peninsula University of Technology, 2019
The purpose of an electrical power system is to supply electrical energy to the customers. Power transformers are required to transform the system voltage from generation to transmission and distribution levels. Protection and control systems must ensure that power system high voltage equipment such as transformers operate and deliver save, reliable and secure electricity supply. The aim of the project research work is to develop and implement a strategy, methods and algorithms for monitoring, protection and voltage control of parallel power transformers based on IEC 61850-9-2 process bus standard. NamPower is a power utility in Namibia. The IEC 61850 protocol for electrical substation automation system is used for the protection and control of 5 power transformers operated in parallel in an existing substation system. The IEC 61850-9-2 process bus standard is however not used in regards of Sampled Values (SV). Protection and control devices are connected to a substation communication network, routers and switches using fibre optic linked Ethernet. Inductive Current Transformers (CTs) and Voltage Transformers (VTs) secondary circuits are hardwired to Intelligent Electronic Devices (IEDs) and fibre optic links are not used for this purpose at process level communication. The research focuses on the implementation of the IEC 61850 standard with Merging Units (MUs) and sampled values to improve the existing implemented protection and control system at NamPower. This includes substation communication networks and MUs used for transformer protection, voltage regulator control and cooling fan control. At the present the CTs located at the transformer bushings and switchgear and the VTs located at the switchgear are hardwired to the inputs on protection and control IEDs. The research focuses on issues with the copper wires for voltage and currents signals and how these issues can be eliminated by using the MUs and the SV protocol. The MUs which are considered in this Thesis is to improve the voltage regulator control and the control of the cooling fan motors. The voltage regulator control IED is situated at the tap change motor drive of the On-Load Tap Changer (OLTC). The IED of each transformer is required to regulate the voltage level of the secondary side bus bar it is connected to. All the regulating IEDs are required to communicate with each other and collectively to control the bus bar voltage depending on the switching configuration of the parallel transformers. The control circuit for controlling the cooling fan motors is hardwired. Temperature analogue signal input into a programmable automation controller IED can be used for controlling the transformer cooling fans. A strategy, methods and algorithms for transformer protection, voltage regulator control and cooling fan motor control of parallel power transformers need to be developed and implemented based on IEC 61850-9-2 process bus. Power utilities and distributors can benefit from interpretation of the IEC 61850-9-2 standard and implementing MUs and SV in substations. MUs can be included in the power transformer protection, automation and control systems. A cost reduction in high voltage equipment, substation installation and commissioning costs and better performance of protection and control system are anticipated.
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Oliveira, Mario Orlando. "Proteção diferencial de transformadores trifásicos utilizando a transformada wavelet." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/17292.

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A qualidade e a continuidade do fornecimento de energia elétrica aos consumidores são fatores muito importantes quando da avaliação da eficiência de um sistema elétrico de potência. Nesse contexto, os transformadores são equipamentos muito importantes e demandam especial atenção quando do projeto do esquema de proteção. Apesar do crescente desenvolvimento das metodologias de proteção de transformadores trifásicos, alguns aspectos ainda não foram totalmente solucionados. Um desses diz respeito à proteção diferencial de transformadores de potência, a qual apresenta vários problemas na discriminação de faltas internas ao transformador. A geração de correntes diferenciais provocada por fenômenos transitórios, como a energização do transformador, produz a incorreta operação do relé, ocasionando uma queda na eficiência do esquema de proteção diferencial. Assim sendo, o presente trabalho apresenta uma nova metodologia de proteção diferencial de transformadores trifásicos, a qual utiliza a transformada wavelet para extrair os sinais transitórios dominantes induzidos pelas faltas internas. A transformada wavelet é uma eficiente ferramenta utilizada no estudo de sinais não-estacionários e de rápida transição. De forma a atender os principais problemas do esquema convencional de proteção, a transformada wavelet discreta é utilizada para decompor os sinais de corrente diferencial em várias faixas de freqüências. Após essa decomposição, a variação de energia espectral dos coeficientes de detalhe wavelet é analisada pelo algoritmo proposto, e assim uma discriminação entre faltas internas e correntes de magnetização, ou correntes inrush, é feita. Usando um modelo elaborado de um sistema elétrico de transmissão são efetuadas rigorosas simulações computacionais para avaliar o desempenho do algoritmo proposto. Os resultados obtidos nessas simulações mostram que a metodologia de proteção diferencial de transformadores trifásicos baseada na variação de energia espectral dos coeficientes wavelets apresenta um ótimo desempenho quando comparada com a metodologia de proteção convencional.
Power supply quality and continuity are very important aspect when assessing the efficiency of an electric power system. In this context, the transformers are key equipments that require special attention during the protection scheme design. Despite the increasing development of methodologies for three-phase transformers protection, some aspects have not yet been fully studied. One of these aspects concerns to the differential protection of power transformers, which presents several restrictions regarding the characterization of internal faults. The observation of differential currents caused by transient phenomena such as transformer energization, produces an incorrect operation of protective relaying, causing a drop in the protection scheme efficiency. Therefore, this work presents a new methodology for differential protection of three-phase transformers using the wavelet transform to extract the transient signals induced by the dominant internal faults. The wavelet transform is an efficient tool in the study of non-stationary signals with fast transients. In order to overcome the main problems of the traditional protection scheme, the discrete wavelet transform is used to decompose the differential current signals into several bands of frequencies. After this decomposition, the spectral energy variation of the wavelet detail coefficients is analyzed by the proposed algorithm and, thus, classification between internal faults, external faults and inrush currents is performed. Using a transmission system model, accurate simulations are performed to evaluate the computational performance of the proposed protection algorithm. The results obtained in these simulations show that the proposed methodology has a great performance when compared with traditional protection philosophies.
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Oliveira, Mario Orlando. "Proteção diferencial adaptativa de transformadores de potência baseada na análise de componentes wavelets." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/87355.

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Este trabalho fundamenta-se no desenvolvimento e aprimoramento de uma metodologia de proteção diferencial de Transformadores de Potência. A metodologia desenvolvida avalia eventos transitórios que dificultam a operação correta de relés diferenciais aplicados à proteção de transformadores. O estudo concentra-se no estabelecimento de contribuições ao estado da arte associadas à análise de sinais de corrente diferenciais geradas tanto por faltas internas e externas quanto por distúrbios transitórios. A concepção da metodologia proposta baseou-se na quantificação da energia espectral gerada a través dos coeficientes de detalhe da Transformada Wavelet Discreta. A metodologia de proteção proposta foi desenvolvida em ambiente MATLAB® e testada por meio de simulações realizadas através do software ATP/EMTP (Alternative Transients Program/Electromagnetic Transients Program). Os resultados da pesquisa mostram a aplicabilidade do algoritmo de proteção, mesmo nas condições mais adversas, como na ocorrência da saturação dos transformadores de corrente.
This work is based on the development and improvement of a methodology to differential protection of power transformer. The proposed methodology evaluates transient events that difficult the correct operation of differential relays applied to transformer protection. The study establishes contributions to the state of the art related to differential current analysis generated by internal and external faults and transient disturbance. The conception of the proposed methodology was based on the spectral energies variation generated by each event and calculated through the detail coefficient of Discrete Wavelet Transform. The proposed methodology was developed in MATLAB® environment and tested through several simulations performed with the ATP/EMTP software (Alternative Transients Program / Electromagnetic Transients Program). The results of the research show the applicability of the protection algorithms, even in adverse conditions, such as saturation of current transformers.
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Segatto, Ênio Carlos. "Relé diferencial para transformadores de potência utilizando ferramentas inteligentes." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-19022016-144637/.

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Este trabalho apresenta a proposta de um sistema completo de proteção diferencial de transformadores de potência, aplicando-se as técnicas de Redes Neurais Artificiais (RNAs). O esquema proposto busca a classificação do sistema de proteção como um problema de reconhecimento e reconstrução de padrões, representando um método alternativo aos algoritmos convencionais. Vários fatores como, por exemplo, as situações de energização do transformador e a saturação dos transformadores de corrente, podem causar uma má operação do dispositivo de proteção. Com o objetivo de melhoramento na proteção digital de transformadores de potência, desenvolveu-se um sistema de proteção diferencial, incluindo dispositivos com base em RNAs, em substituição à filtragem harmônica de sinais existente no algoritmo convencional. Em complementação, esquemas de reconstrução das ondas distorcidas provenientes da saturação dos TCs são também propostos e adicionados ao algoritmo final de proteção, sendo esses comparados ao algoritmo convencional de proteção diferencial de transformadores. Com a referida adição de ferramentas de inteligência artificial a um algoritmo completo de proteção diferencial de transformadores, obteve-se uma solução bastante precisa e eficiente, capaz de responder em um tempo reduzido, se comparada aos métodos convencionais.
This work proposes a complete differential protection system for power transformers, applying the Artificial Neural Network (ANN) theory. The proposed approach treat the classification of the protection system as a problem of pattern recognition and as an alternative method to the conventional algorithms. Several factors such as, for example, transformer energization and CT saturation can cause an inadequate operation of the protection relay. With the objective of improving the power transformer digital protection, a complete protection system was developed, including an ANN-based device in substitution to harmonic filters, in use in the conventional algorithm. Some approaches concerning the reconstruction of the distorted signals caused by the CTs saturation are also proposed. These routines are added to the final protection algorithm and they are compared to the conventional algorithm for power transformer protection. With the use of artificial intelligence tools in a complete power transformer protection algorithm, one intends to obtain a very precise, fast and efficient solution, if compared to the conventional methods.
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Bernardes, Alexandre Paciencia. "Um esquema completo de proteção diferencial de transformadores para testes em um relé digital." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-16072006-122259/.

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Este trabalho apresenta um procedimento completo de simulação da proteção digital diferencial aplicada a transformadores de potência, visando o emprego deste à avaliação do comportamento de relés comercialmente disponíveis. Foi escolhido o software ATP (Alternative Transients Program) como ferramenta para a simulação de distintas situações sobre um sistema diferencial de proteção aplicado a um transformador de 25 MVA. Dentre as ocorrências evidenciadas, destacam-se: situações de faltas internas, faltas externas, situações de energização e energização com falta interna do transformador, condição de sobreexcitação e de saturação de TC (Transformador de Corrente). Cabe comentar que das simulações a real caracterização sobre o relé em teste, fez-se necessário todo um pré-processamento e análise da informação que será convenientemente abordada e justificada no trabalho apresentado, denotando-se um procedimento comum de teste a ser adotado a esta filosofia de proteção. A metodologia e esquema prático adotado trazem uma contribuição importante para a análise laboratorial de modelagens e simulações aplicadas a relés de proteção presentes no mercado e contribui de maneira substancial para os estudos teóricos de possíveis soluções para limitações eventualmente encontradas
This dissertation presents a complete procedure of simulation of digital differential protection applied to power transformers, focusing on its use to evaluate of the behavior of commercially available relays. Software ATP (Alternative Transients Program) was chosen as a tool for the simulation of distinct situations in a differential protection system applied to a 25 MVA three-phase transformer. Amongst the evidenced occurrences internal and external fault conditions, energization with or without internal fault of a three-phase transformer, overexcitation and CT (Current Transformer) saturation conditions were distinguished. It should be mentioned that from simulations to the characterization the real situations on the relay in test, a pre-processing and analysis of the information were necessary, and will be justified in the present study, denoting a common test procedure to be adopted to this philosophy of protection
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Jorge, David Calhau. "Transformadas wavelet aplicadas à proteção diferencial de transformadores de potência." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-18022016-093145/.

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Transformadores de potência são dispositivos que requerem atenção especial devido a sua grande importância ao sistema elétrico de potência no qual ele está conectado. Geralmente relés diferenciais são utilizados como proteção primária em transformadores de potência. Nestes relés, a corrente diferencial é comparada com um nível de ajuste e caso ocorra uma falta interna, o transformador deverá ser desconectado do restante do sistema. Entretanto, a simples detecção da presença de uma corrente diferencial não é suficiente para distinguir faltas internas de outras situações que também podem produzir tal corrente. Tais situações surgem durante a energização dos transformadores, devido a saturação dos transformadores de corrente, entre outras, as quais podem resultar em uma incorreta atuação da proteção. Uma rápida e correta discriminação entre faltas internas e outras situações é um dos desafios da moderna proteção de transformadores de potência. A respeito da identificação de faltas internas ou situações de energização, além da mencionada lógica diferencial é acrescentado uma subrotina baseada na restrição de harmônicas. Neste método, a corrente de energização é reconhecida através da presença de uma segunda harmônica obtida por filtros de Fourier. No entanto, o método de filtragem pode algumas vezes retardar a operação da proteção. Além disto, uma componente de segunda harmônica pode também estar presente durante uma falta interna. Este trabalho propõe a utilização da transformada Wavelet - uma poderosa ferramenta matemática - empregada como um meio rápido e eficiente de analisar as formas de onda de transformadores de potência e como uma alternativa a tradicional transformada de Fourier. Os sinais das correntes diferenciais são processados pelas transformadas discretas Wavelet, visando obter uma discriminação entre ambas situações (energização e falta). Um nível de limiar é utilizado após a decomposição Wavelet do sinal para discriminar entre as situações descritas. A janela de dados utilizada para este propósito pode ser variada. Para testar o algoritmo proposto, as simulações de energização e falta foram implementadas, utilizando o programa ATP (\"Alternative Transient Program\"). Em situações onde a janela de dados é reduzida para 1/4 de ciclo o critério de discriminação pode ser otimizado utilizando a transformada discreta de Wavelet auxiliada com técnicas de reconhecimento de padrões. Este trabalho apresenta a utilização de redes neurais artificiais para tal finalidade como exemplo. Resultados encorajadores são apresentados sobre a capacidade de discriminação para as situações descritas assim como a rapidez de resposta quando comparados aos métodos tradicionais.
Power transformers are devices that require special maintenance and care due to their importance to the electrical system to which they are connected. Generally, differential relays are used for the primary protection of large transformers. In such relays, differential currents are compared to a threshold and in the case of an internal fault, the transformer should be disconnected from the rest of the system. However, a simple detection of a differential current is not sufficient to distinguish internal faults from other situations that also produce such a current. Some of these situations appear during transformer energization (inrush currents), CT (current transformer) saturation, among others, which can result in an incorrect trip. A correct and fast distinction of internal faults from the other situations mentioned is one of the challenges for modern protection of power transformers. Concerning the identification of internal faults as opposed to inrush currents, the approach tarditionally used is the aforementioned differential logic together with harmonic restraint. In this method, transformer inrush current due to energization is recognized on the basis of second harmonic components obtained by Fourier filters. However, the filtering method can sometimes delay the protection process. In addition to this, a second harmonic component can also be present during internal faults. This work proposes Wavelet transform - a powerful mathematical tool - employed as a fast and effective means of analyzing waveforms from power transformers, as an alternative to the traditional Fourier transform. The differential signals are processed by discrete Wavelet transform to obtain the discrimination between both situations (inrush and fault). A threshold level is utilized after the Wavelet decomposition to discriminate the situations describeb. The time window used for such purpose can be varied. In order to test proposed algorithm, simulations of fault and inrush currents in a power transformer were implemented using ATP ( \"Alternative Transient Program\") software. When the time window is reduced to only 1/4 of the cycle the discrimination criteria should be optimized using a pattern recognition technique to aid the Discrete Wavelet transform. This study shows as a sample for this purpose the use of artificial neural networks. Very encouraging results are presented concerning the capacity of discrimination of the described situations as well as the speed of response when compared to the traditional method.
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Book chapters on the topic "Transformer differential protection"

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Patel, Dharmesh, and Nilesh Chothani. "Adaptive Digital Differential Protection of Power Transformer." In Power Systems, 83–106. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6763-6_4.

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Mujezinović, Adnan, Maja Muftić Dedović, Nedis Dautbašić, and Sead Kreso. "Power Transformer Modeling from Differential Protection Aspect." In Lecture Notes in Networks and Systems, 135–44. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-47295-9_11.

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Roy, Arpita, Devender Singh, and Rakesh K. Misra. "Differential Evolution-Based Matched Wavelet for Differential Protection of Transformer." In Advances in Intelligent Systems and Computing, 531–41. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1135-2_40.

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Patel, Dharmesh, and Nilesh Chothani. "Phasor Angle Based Differential Protection of Power Transformer." In Power Systems, 51–81. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6763-6_3.

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Kezunovic, Mladen, Jinfeng Ren, and Saeed Lotfifard. "Design and Implementation of Transformer and Busbar Differential Protection." In Design, Modeling and Evaluation of Protective Relays for Power Systems, 241–61. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-20919-7_7.

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Vázquez Martínez, Ernesto, Héctor Esponda Hernández, and Manuel A. Andrade Soto. "A New Transformer Differential Protection Algorithm Based on Data Pattern Recognition." In Big Data Analytics in Future Power Systems, 143–68. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor &: CRC Press, 2018. http://dx.doi.org/10.1201/9781315105499-8.

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Balaga, Harish, and Deepthi Marrapu. "Customized Hidden Layered ANN Based Pattern Recognition Technique for Differential Protection of Power Transformer." In Advances in Intelligent Systems and Computing, 141–49. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49345-5_15.

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Gu, Qiaogen, Hang Lv, Xiaoyu Zhang, Lulu Cheng, and Xiao Cheng. "Empirical Study of the Influence of AC/DC Touch Fault on Transformer Differential Protection." In Proceedings of 2020 International Top-Level Forum on Engineering Science and Technology Development Strategy and The 5th PURPLE MOUNTAIN FORUM (PMF2020), 40–52. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9746-6_4.

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Fuadi, Soni Asmaul, and Ario Dwi Prabowo. "Prevent the Occurrence of False Signals in the Power Transformer Internal Protection in Substation to Improve Reliability with Differential Operational Amplifier Safety." In Proceedings of Sixth International Congress on Information and Communication Technology, 857–68. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1781-2_74.

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Oliveira, Luís M. R., and António J. Marques Cardoso. "Power Transformers Differential Protection Using the p-q Power Theory." In Technological Innovation for Value Creation, 283–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28255-3_31.

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Conference papers on the topic "Transformer differential protection"

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Gupta, Piyush, Mayank Khandelwal, Rishi Sharma, Manish K. Singh, and Naveen P. Reddy. "Differential protection of transformer using FPGA." In 2014 International Conference on Smart Electric Grid (ISEG). IEEE, 2014. http://dx.doi.org/10.1109/iseg.2014.7005621.

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Liping, Wang, and Wang Xiaoru. "Transformer differential protection using calculated power." In 2011 IEEE International Conference on Advanced Power System Automation and Protection (APAP). IEEE, 2011. http://dx.doi.org/10.1109/apap.2011.6180428.

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Gomez-Morante, M., and D. W. Nicoletti. "A wavelet-based differential transformer protection." In IEEE Power Engineering Society. 1999 Winter Meeting (Cat. No.99CH36233). IEEE, 1999. http://dx.doi.org/10.1109/pesw.1999.747344.

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Murugan, Senthilkumar, Sishaj P. Simon, Sundareswaran Kinattingal, Srinivasa Rao Nayak Panugothu, and Narayana Prasad Padhy. "An empirical fourier transform based power transformer differential protection." In 2017 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2017. http://dx.doi.org/10.1109/pesgm.2017.8274337.

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Vazquez, E., I. I. Mijares, O. L. Chacon, and A. Conde. "Transformer differential protection using principal component analysis." In 2006 IEEE Power Engineering Society General Meeting. IEEE, 2006. http://dx.doi.org/10.1109/pes.2006.1709128.

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Lopez, Omar, and J. L. Guardado. "Modeling transformer differential protection with harmonic restraint." In 2015 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC). IEEE, 2015. http://dx.doi.org/10.1109/ropec.2015.7395068.

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Verzosa, Quintin, and Wah A. Lee Alex. "Testing microprocessor-based numerical transformer differential protection." In 2015 IEEE Industry Applications Society Annual Meeting. IEEE, 2015. http://dx.doi.org/10.1109/ias.2015.7356955.

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Long, Yang, and Li Donghui. "Research on Differential Protection of Power Transformer Based Wavelet Transform." In 2009 Second International Conference on Intelligent Computation Technology and Automation. IEEE, 2009. http://dx.doi.org/10.1109/icicta.2009.491.

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Suribabu and Sankar Ram. "Wavelet transform and ANN base differential protection for power transformer." In 2016 International conference on Signal Processing, Communication, Power and Embedded System (SCOPES). IEEE, 2016. http://dx.doi.org/10.1109/scopes.2016.7955773.

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Bhasker, Shailendra Kumar, Pallav Kumar Bera, Vishal Kumar, and Manoj Tripathy. "Differential protection of indirect symmetrical phase shift transformer using wavelet transform." In 2015 Annual IEEE India Conference (INDICON). IEEE, 2015. http://dx.doi.org/10.1109/indicon.2015.7443404.

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