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Partial discharge location in power transformer windings using the wavelet Laplace function
(Elsevier Science Sa, 2014-06)
Insulation system conditions in power transformers can be evaluated by means of partial discharge (PD) analyses. In fact, PD analysis is used to detect premature damage in transformer insulation system to avoid catastrophic ...
Modelo determinístico basado en indicadores de condición para evaluación de sistemas de aislación de bobinados estatóricos de generadores eléctricos
(Universidad Nacional de Misiones. Facultad de Ingeniería. Secretaría de Ciencia y Técnica, 2019-06-21)
Este trabajo propone un modelo determinístico para evaluar el estado de condición del Sistema de Aislación del Bobinado Estatórico (SABE) de generadores eléctricos de gran potencia. El modelo propuesto integra diferentes ...
Driver eletrônico com seis saídas isoladas para transistores de potência do tipo IGBT
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilDepartamento Acadêmico de EletrônicaTecnologia em Automação IndustrialUTFPR, 2016-09-14)
In this work, it was developed a driver for actuation of IGBT power transistors. the main characteristics of the developed prototype stand out the galvanic isolation between the pulse generator and the gate, the compatibility ...
Avaliação dos efeitos de vento em linhas de transmissão
(Universidade Federal de Minas GeraisUFMG, 2015-02-19)
In transmission lines, the main load to be considered in the structural analyses is produced by wind, which acts dynamically in the system (towers, cables and insulator strings). Considering that several accidents involving ...
Assessment of Ichu fibers as non-expensive thermal insulation system for the Andean regions
(Elsevier, 2015-12-01)
In the Andean regions, low temperatures (5 to −25 °C) combined with the wind effect give the sensation of extreme cold. Besides, in the rural areas, dwelling structures are very rudimentary, being based on adobe walls and ...
Crowbar System in Doubly Fed Induction Wind Generators
(MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL-MDPI, 2010)
In the last 15 years, the use of doubly fed induction machines in modern variable-speed wind turbines has increased rapidly. This development has been driven by the cost reduction as well as the low-loss generation of ...
Partial discharges location in transformer winding using wavelets and Kullback-Leibler divergence
(Elsevier Science Sa, 2016-07)
A new algorithm to partial discharges (PD) location in transformer windings by means of the discrete wavelets transform (DWT) and the Kullback-Leibler (KL) divergence is presented. When the insulation system of transformers ...
DISEÑO DE SOPORTES AISLANTES EN TRANSFORMADORES SECOS EN MEDIA TENSIÓN
(2011-10-24)
Improvements on solid insulating materials over the last decades have allowed a fast progress in the medium voltage dry transformer technology compared to liquid-filled transformers. The design of air distances on dry type ...
A review of the expericence in testing of high voltage generators.
(CIGRE, 1997)
The convenience of testing the high voltage machine insulation is well known. Test methods used in our country for determining the state of degradation of the insulation are presented with results gathered during three ...