{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/6108"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/6108","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Estudo de descargas parciais em isolamento de máquinas elétricas usando o método dos elementos finitos","abstract":"Partial discharges are internal discharges in the insulation system caused by imperfections during the manufacturing process or by regular insulation deterioration. The repetition of partial discharges can deteriorate the insulation that can lead it to fail. In stator coils of medium voltage machines, monitoring partial discharge is a great tool for monitoring the condition of the insulation of motors and generators as a way to try to predict whether the insulation is close or not to fail. The good understanding of partial discharge phenomenon is an important first step to increase the assertive diagnosis in monitoring the life of the insulation system in electric machines. In this context, this work aims to study the phenomenon of partial discharges using a model via finite elements, which was presented previously, in the insulation of a stator coil of 13.8 kV with an internal cavity in the main insulation. The main goal of this work is to check the influence of certain parameters in the results. Thus, simulations were carried out considering variations of parameters such as size, position and geometry of the cavity, amplitude of the applied voltage, thickness of main insulation of the coil and initial temperature of the geometry.","abstract_html":"Partial discharges are internal discharges in the insulation system caused by imperfections during the manufacturing process or by regular insulation deterioration. The repetition of partial discharges can deteriorate the insulation that can lead it to fail. In stator coils of medium voltage machines, monitoring partial discharge is a great tool for monitoring the condition of the insulation of motors and generators as a way to try to predict whether the insulation is close or not to fail. The good understanding of partial discharge phenomenon is an important first step to increase the assertive diagnosis in monitoring the life of the insulation system in electric machines. In this context, this work aims to study the phenomenon of partial discharges using a model via finite elements, which was presented previously, in the insulation of a stator coil of 13.8 kV with an internal cavity in the main insulation. The main goal of this work is to check the influence of certain parameters in the results. Thus, simulations were carried out considering variations of parameters such as size, position and geometry of the cavity, amplitude of the applied voltage, thickness of main insulation of the coil and initial temperature of the geometry.","abstract_has_math":false,"creators":["Ferreira, Rodrigo Sousa"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Ferreira, Antônio Carlos"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-02","date_published":"2017-02","updated_at":"2026-07-24T01:16:18Z","subjects":["Descargas parciais","Máquinas elétricas","Método dos elementos finitos"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/6108","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Ferreira, Antônio Carlos"]},{"key":"dc:creator","label":"Author","values":["Ferreira, Rodrigo Sousa"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2019-01-17T15:32:49Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:03:27Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-02"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Descargas parciais","Máquinas elétricas","Método dos elementos finitos"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/6108"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Partial discharges are internal discharges in the insulation system caused by imperfections during the manufacturing process or by regular insulation deterioration. The repetition of partial discharges can deteriorate the insulation that can lead it to fail. In stator coils of medium voltage machines, monitoring partial discharge is a great tool for monitoring the condition of the insulation of motors and generators as a way to try to predict whether the insulation is close or not to fail. The good understanding of partial discharge phenomenon is an important first step to increase the assertive diagnosis in monitoring the life of the insulation system in electric machines. In this context, this work aims to study the phenomenon of partial discharges using a model via finite elements, which was presented previously, in the insulation of a stator coil of 13.8 kV with an internal cavity in the main insulation. The main goal of this work is to check the influence of certain parameters in the results. Thus, simulations were carried out considering variations of parameters such as size, position and geometry of the cavity, amplitude of the applied voltage, thickness of main insulation of the coil and initial temperature of the geometry."]},{"key":"dc:title","label":"Title","values":["Estudo de descargas parciais em isolamento de máquinas elétricas usando o método dos elementos finitos"]}]}],"canonical_facts":{"dc:contributor.advisor":["Ferreira, Antônio Carlos"],"dc:creator":["Ferreira, Rodrigo Sousa"],"dc:date.accessioned":["2019-01-17T15:32:49Z"],"dc:date.available":["2026-05-16T03:03:27Z"],"dc:date.issued":["2017-02"],"dc:description.abstract":["Partial discharges are internal discharges in the insulation system caused by imperfections during the manufacturing process or by regular insulation deterioration. The repetition of partial discharges can deteriorate the insulation that can lead it to fail. In stator coils of medium voltage machines, monitoring partial discharge is a great tool for monitoring the condition of the insulation of motors and generators as a way to try to predict whether the insulation is close or not to fail. The good understanding of partial discharge phenomenon is an important first step to increase the assertive diagnosis in monitoring the life of the insulation system in electric machines. In this context, this work aims to study the phenomenon of partial discharges using a model via finite elements, which was presented previously, in the insulation of a stator coil of 13.8 kV with an internal cavity in the main insulation. The main goal of this work is to check the influence of certain parameters in the results. Thus, simulations were carried out considering variations of parameters such as size, position and geometry of the cavity, amplitude of the applied voltage, thickness of main insulation of the coil and initial temperature of the geometry."],"dc:identifier.uri":["http://hdl.handle.net/11422/6108"],"dc:language":["por"],"dc:publisher":["Universidade Federal do Rio de Janeiro"],"dc:publisher.department":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"],"dc:rights":["Acesso Aberto"],"dc:subject":["Descargas parciais","Máquinas elétricas","Método dos elementos finitos"],"dc:title":["Estudo de descargas parciais em isolamento de máquinas elétricas usando o método dos elementos finitos"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:16:18Z"}