Relevant bibliographies by topics / Power transformer maintenance / Dissertations / Theses
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Dissertations / Theses on the topic 'Power transformer maintenance'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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1

Endo, Fumihiro, Masaki Kanamitsu, Ryo Shiomi, Hiroki Kojima, Naoki Hayakawa, and Hitoshi Okubo. "Optimization of Asset Management and Power System Operation Based on Equipment Performance." IEEE, 2008. http://hdl.handle.net/2237/11798.

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2

Strandh, Johan, and Viktor Ruda. "Radialmåttavvikelser i Transformatorlindningar : Ett examensarbete hos Hitachi ABB Power Grids Ludvika." Thesis, Uppsala universitet, Industriell teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-450028.

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This assignment is based on the tolerance problems that occur with the radial dimensions or RR-dimensions for the windings. The purpose is to identify the various parameters that affect said RR-dimensions and where these parameters originate from to be able to assure quality of the winding process. The RR-dimension has a tolerance of + 2,2 and - 1,1 mm, but it is only the positive tolerance that cause problems. The case study is based on a mixture of quantitative and qualitative methods. Quantitative data collections of dimensions for leaders and how the RR-measurement are affected by them, an
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3

Rosa, Filho Raimundo Nonato. "METODOLOGIA PARA REDUÇÃO DE CUSTOS NA MANUTENÇÃO DOS COMUTADORES DE TAP SOB CARGA DOS TRANSFORMADORES DE POTÊNCIA DE EXTRA ALTA TENSÃO DA ELETRONORTE." Universidade Federal do Maranhão, 2005. http://tedebc.ufma.br:8080/jspui/handle/tede/385.

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Made available in DSpace on 2016-08-17T14:52:58Z (GMT). No. of bitstreams: 1 Raimundo Nonato Rosa Filho.pdf: 1125835 bytes, checksum: 91689e7b58443f6d0eb73d752860ce37 (MD5) Previous issue date: 2005-03-31<br>In this work a methodology for reduction of maintenance cost in the on-load tap changers (OLTC) of extra high voltage is proposed. The methodology is based on the use of Artificial Neural Networks (ANN) for the intelligent processing of input signals of the commutator. The neural nets adequately trained allow to create an information system and dedicated diagnosis of the OLTC. This sys
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4

Eke, Samuel. "Stratégie d'évaluation de l'état des transformateurs : esquisse de solutions pour la gestion intégrée des transformateurs vieillissants." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEC013/document.

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Cette thèse de doctorat traite des méthodes d’évaluation de l’état des transformateurs de puissance à huile. Elle apporte une approche particulière de mise en oeuvre des méthodes de classification dans la fouille de données. Elle propose une stratégie qui met en oeuvre deux nouveaux indicateurs de santé de l’huile construit à partir d’un système neuro flou ANFIS (Adaptative Neuro-Fuzzy Inference System) et un classifieur ou prédicteur de défaut construit à partir des méthodes de classification supervisée, notamment le classifieur Bayésien naïf. Un organigramme simple et efficace d’évaluation d
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Campi, Rodrigo Luz. "Modelagem fuzzy da concentração dos gases dissolvidos em óleo mineral isolante de transformadores baseada em resultados de ensaios físico-químicos." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-07032014-143351/.

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O objetivo desse trabalho foi de fazer a modelagem por meio de sistemas de inferência fuzzy da concentração dos gases dissolvidos em óleo mineral isolante à partir dos resultados de ensaios físico-químicos. Dessa forma, objetivou-se estender as técnicas de identificação de falhas em transformadores por meio da análise dos ensaios físico-químicos do óleo isolante. Para tanto adotou-se um mapeamento entre os dados de ensaios físico-químicos e de cromatografia gasosa feito por meio de sistemas de inferência fuzzy. Assim, por meio de resultados de ensaios físico-químicos, como cor, densidade, unid
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6

Carriel, Lázaro Partamian 1950. "Carregamento e envelhecimento de transformadores elétricos de potência e aspectos prioritários para a manutenção baseada na condição : Loading and aging of electrical power transformers and main aspects to condition-based maintenance." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259377.

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Orientador: José Pissolato Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-21T11:22:49Z (GMT). No. of bitstreams: 1 Carriel_LazaroPartamian_M.pdf: 4727086 bytes, checksum: dcf745210139d03b3d6ea5af9c6db4d8 (MD5) Previous issue date: 2012<br>Resumo: O transformador é o maior ativo, o mais importante e o mais caro do sistema elétrico de potência. Este estudo tem a finalidade de apresentar uma metodologia e um processo de análise do ciclo de vida útil de transformadores de potência basead
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7

Marques, André Pereira. "Diagnóstico otimizado de transformadores de potência mediante a integração de técnicas preditivas." Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/8297.

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Submitted by Franciele Moreira (francielemoreyra@gmail.com) on 2018-04-04T12:41:38Z No. of bitstreams: 2 Tese - André Pereira Marques - 2018.pdf: 11271921 bytes, checksum: 086b8deaeaa9f31cd4e5ea975724a254 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-04-04T13:27:18Z (GMT) No. of bitstreams: 2 Tese - André Pereira Marques - 2018.pdf: 11271921 bytes, checksum: 086b8deaeaa9f31cd4e5ea975724a254 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made a
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8

Sousa, Felipe Resende de Carvalho. "Uma contribuição computacional para a análise da migração de umidade em sistemas isolantes papel- óleo de transformadores de potência." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/6427.

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Submitted by Erika Demachki (erikademachki@gmail.com) on 2016-10-19T16:18:12Z No. of bitstreams: 2 Dissertação - Felipe Resende de Carvalho Sousa - 2016.pdf: 6672203 bytes, checksum: b0d857b45451fe225dfdbd424c35be00 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Erika Demachki (erikademachki@gmail.com) on 2016-10-19T16:18:40Z (GMT) No. of bitstreams: 2 Dissertação - Felipe Resende de Carvalho Sousa - 2016.pdf: 6672203 bytes, checksum: b0d857b45451fe225dfdbd424c35be00 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e98009
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9

Júnior, Amleto Landucci. "Manutenção pré-corretiva em transformadores de potência: um novo conceito de manutenção." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-01092009-112719/.

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Um importante diferencial competitivo das empresas distribuidoras de energia elétrica é a gestão da utilização dos seus ativos elétricos. Dentre eles destaca-se o transformador de potência em função de sua importância estratégica no fornecimento de energia aos grandes centros de carga. Para minimizar os impactos operacionais e sociais associados às interrupções constantemente monitoradas para que haja controle efetivo e garantia de funcionamento adequado e otimizado. O monitoramento das suas principais características é um ponto crítico que deve ser constantemente aprimorado, pela indiscutível
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10

Huang, Wei-Hann, and 黃韋翰. "Using Proportional Hazards Model to Implement the Condition Based Maintenance for Power Transformer." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/65515681819388918672.

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碩士<br>聖約翰科技大學<br>電機工程系碩士班<br>100<br>With the advance of science and technology, the maintenance of equipment has been transformed into condition based maintenance (CBM). The biggest advantage of CBM is to increase employees’ efficiencies without the addition waste of human resources, avoid excessive maintenance of equipment, and reduce operating costs. In this thesis, the parameters that may affect the transformer are carefully selected from the existing research results, maintenance history and expertise guidance for accurately evaluating the condition of transformer. Trough tests of comp
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11

Sithole, Calvin. "Partial discharge measurement in distribution power transformers." Thesis, 2013. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000388.

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M. Tech. Electrical Engineering.<br>Discusses the appearance of partial discharge (PDs) is a problem of insulation failure in high voltage equipment used in power plants. As the insulation of equipment has a sensitive zone, therefore the quality of insulation plays an important role in such power equipment. PDs in power transformers are capable of leading to corrosion on solid insulating materials, thereby in the long term, causing a breakdown of the particular operating component. It follows that the real challenge is to identify the most appropriate method for the measurement and/or detectio
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12

WU, JIN-ZHONG, and 吳進忠. "Reliability evaluations and optimum maintenance periods of power transformers." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/10954872180034535786.

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13

Chilwane, Sarah Refilwe Mpho. "Life cycle management for power transformers in the Eskom distribution network - case study." Thesis, 2014. http://hdl.handle.net/10210/11260.

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M.Ing. (Engineering Management)<br>Electricity is a crucial key component in every day life influencing the economy, safety; health, productivity and comfort just to name a few. The benefits and importance of electricity can be easily taken for granted by the consumer. Towards the end of 2007, South Africa suffered numerous power outages and that lead to the implementation of load shedding by Eskom, the electricity utility in South Africa, in order to manage the shortage of electricity. Electricity utilities constantly make decisions that affect the cost, reliability and quality of their servi
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14

Lokothwayo, Musawenkosi Phillemon. "Reliability centered maintenance implementation on the eThekwini electricity network for system maintenance process optimisation." Thesis, 2017. http://hdl.handle.net/10321/2567.

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Submitted in fulfillment of the requirements for the degree of Master of Engineering, Durban University of Technology, Durban, South Africa, 2017.<br>Much equipment in the eThekwini Electricity network has been in use for several decades. Failure of this equipment could critically impact electricity supply to customers, and result in high costs associated with loss of load and/or component replacement. The fundamental motive for any power utility is to plan, operate, and maintain power infrastructure such that customers receive reliable electric services at the minimum expense possible.
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15

Lin, Tung-Bin, and 林桐斌. "Design of Substation Facility Maintenance and Management System Incorporated with Fault Diagnosis Method for Power Transformers Based on Hybrid Fuzzy Dissolved Gas Analysis." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/pug39n.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>98<br>To expedite Taiwan Power Company’s (TPC’s) engineers recording inspection results of primary substation facilities and to affirm the inspection works have been finished. The “Substation Facility Maintenance and Management System (SFMMS)” is designed for TPC to integrate data of all substation facility into database and to increase and update data as well as security management by Server. The SFMMS also provides the functions such as filtering and analysis of inspection data, acquisition of facility information, and printing of different tables for maintenanc
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