Submitted by Edisangela Bastos (edisangela@ufpa.br) on 2015-05-20T18:31:05Z No. of bitstreams: 2 license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Dissertacao_DeteccaoLocalizacaoDescargas.pdf: 8630937 bytes, checksum: 7123a40ea91de0c98bbf43fcfeacbd90 (MD5) / Approved for entry into archive by Ana Rosa Silva (arosa@ufpa.br) on 2015-05-21T16:46:18Z (GMT) No. of bitstreams: 2 license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Dissertacao_DeteccaoLocalizacaoDescargas.pdf: 8630937 bytes, checksum: 7123a40ea91de0c98bbf43fcfeacbd90 (MD5) / Made available in DSpace on 2015-05-21T16:46:18Z (GMT). No. of bitstreams: 2 license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Dissertacao_DeteccaoLocalizacaoDescargas.pdf: 8630937 bytes, checksum: 7123a40ea91de0c98bbf43fcfeacbd90 (MD5) Previous issue date: 2015 / Neste trabalho, é desenvolvido um método de localização de descargas parciais, em transformadores de potência, baseado no algoritmo GPS (Global Positioning System). Para a análise da estrutura, foi desenvolvido um solftware, no qual as equações diferenciais que representam a propagação de ondas acústicas são resolvidas numericamente através do método Acoustic Finite Difference Time Domain (AFDTD), cujo domínio computacional é truncado através da técnica CPML (Convolutional Perfectly Matched Layer). Os resultados obtidos são comparados a estimativas produzidas utilizando-se sinais elétricos relativos às descargas. / In this work, we develop a method for locating partial discharges (PDs), in power transformers, based on GPS (Global Positioning System) algorithm. For analyzing the structure, we implement a software in which the di erential equations that describe the propagation of acoustic waves are solved numerically by the Acoustic Finite-Di erence Time-Domain (AFDTD) method. The AFDTD computational domain is truncated by the CPML technique (Convolutional Perfectly Matched Layer). The obtained results are compared to estimates produced using electromagnetic waves generated by PDs.