رسالة جامعية
Análise do comportamento dinâmico de descargas parciais e da produção de ondas sonoras a partir de simulação numérica ; Analysis of the dynamic behavior of partial discharges and the production of sound waves using numerical simulation
| العنوان: | Análise do comportamento dinâmico de descargas parciais e da produção de ondas sonoras a partir de simulação numérica ; Analysis of the dynamic behavior of partial discharges and the production of sound waves using numerical simulation |
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| المؤلفون: | Fabris, Luis Victor Muller |
| المساهمون: | Silva, Jean Carlos Cardozo da, orcid:0000-0003-2310-9159, http://lattes.cnpq.br/9949032159595994Test, Abe, Ilda, orcid:0000-0003-1142-8996, http://lattes.cnpq.br/6430809426743411Test, Rambo, Marcos Vinicio Haas, orcid:0000-0002-1768-511X, http://lattes.cnpq.br/1121386710402716Test |
| بيانات النشر: | Universidade Tecnológica Federal do Paraná Curitiba Brasil Programa de Pós-Graduação em Engenharia Elétrica e Informática Industrial UTFPR |
| سنة النشر: | 2022 |
| المجموعة: | Universidade Tecnológica Federal do Paraná (UTFPR): Repositório Institucional (RIUT) |
| مصطلحات موضوعية: | Descargas elétricas, Falhas de energia elétrica, Ondas sonoras, Fibras ópticas, Elétrons - Emissão, Métodos de simulação, Isoladores e isolamentos elétricos, Electric discharges, Electric power failures, Sound-waves, Optical fibers, Electrons - Emission, Simulation methods, Electric insulators and insulation, CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA, Engenharia Elétrica |
| الوصف: | Partial discharges can occur in different types of electric equipment and cause progressive insulation deterioration, só there is interest in monitoring partial discharges for assessing the state of the isolation of an electric system and to predict failures. Techniques to detect partial discharges, such as detecting ultrasonic emission, have been proposed in the literature, but as various effects can co-occur during a discharge, identifying characteristics in sound and pressure waveforms and correlating then with discharge characteristics is difficult. Simulations can assist in these correlations by allowing the separation of the different phenomena. In this work the drift diffusion model, including photo-ionization, is coupled with the linearized compressible Navier-Stokes equations to simulate ultrasonic waves produced by partial discharges. Previous works have used the incompressible Navier-Stokes equations, só they can simulate ionic wind produced by the Trichel pulses, but no sound. In the literature, simulations have focused either on streamers or Trichel pulses. In this work both discharges and produced sound waves are successfully simulated in the electrode-plane geometry in air. The electric current and charge per pulse are compared with experimental results reported in the literature for the same discharge conditions. The simulations demonstrated that the sound waves depart from the electrode tip for the Trichel pulses, and that for the streamers two sound waves are produced, one which departs from the electrode tip and the other from the whole discharge length. Differences in the wave front with respect to the relative position to the electrode tip were analyzed, showing that near the discharge spot the sound wave is not a spherical wavefront. The sound wave for one of the discharges in the Trichel pulse regime was compared with experimental results in the literature. Results are in good agreement with the experimental data found in the literature. Both current and sound waves were successfully ... |
| نوع الوثيقة: | master thesis |
| وصف الملف: | application/pdf |
| اللغة: | Portuguese |
| العلاقة: | FABRIS, Luis Victor Muller. Análise do comportamento dinâmico de descargas parciais e da produção de ondas sonoras a partir de simulação numérica. 2022. Dissertação (Mestrado em Engenharia Elétrica e Informática Industrial) - Universidade Tecnológica Federal do Paraná, Curitiba, 2022.; http://repositorio.utfpr.edu.br/jspui/handle/1/29529Test |
| الإتاحة: | http://repositorio.utfpr.edu.br/jspui/handle/1/29529Test |
| حقوق: | openAccess ; http://creativecommons.org/licenses/by/4.0Test/ |
| رقم الانضمام: | edsbas.2D311016 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |