{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/6437"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/6437","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Avaliação da estabilidade a pequenos sinais em sistemas CA/CC em paralelo","abstract":"In Brazil, the rst DC transmission systems have traditionally been constructed as asynchronous interconnections of CA networks. However, with the start-up of the bipoles associated to the Belo Monte complex, the interconnection will take place in parallel with the AC system of the National Interconnected System. In this dissertation, we present an analysis of DC transmission systems in parallel with AC systems from the perspective of small-signal stability of electric power systems. We present aspects related to linear and nonlinear representation of the DC link controls. The studies are performed using modal analysis techniques for power systems, as well as linear and nonlinear time domain simulations. The small signal theory is used to identify the critical modes of oscillation from the HVDC, in detriment of the stability margin. The simulations show that, in weak electrical systems, characterized by the low short-circuit ratio, a critical mode from the current control mode of the link may be responsible for triggering a voltage instability process.","abstract_html":"In Brazil, the rst DC transmission systems have traditionally been constructed as asynchronous interconnections of CA networks. However, with the start-up of the bipoles associated to the Belo Monte complex, the interconnection will take place in parallel with the AC system of the National Interconnected System. In this dissertation, we present an analysis of DC transmission systems in parallel with AC systems from the perspective of small-signal stability of electric power systems. We present aspects related to linear and nonlinear representation of the DC link controls. The studies are performed using modal analysis techniques for power systems, as well as linear and nonlinear time domain simulations. The small signal theory is used to identify the critical modes of oscillation from the HVDC, in detriment of the stability margin. The simulations show that, in weak electrical systems, characterized by the low short-circuit ratio, a critical mode from the current control mode of the link may be responsible for triggering a voltage instability process.","abstract_has_math":false,"creators":["Silvero, Oscar Miguel Santacruz"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Taranto, Glauco Nery"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-08","date_published":"2017-08","updated_at":"2026-07-24T01:16:21Z","subjects":["Engenharia elétrica","Análise modal","Elos de corrente contínua"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/6437","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Taranto, Glauco Nery"]},{"key":"dc:creator","label":"Author","values":["Silvero, Oscar Miguel Santacruz"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2019-02-08T16:47:39Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:05:14Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-08"]},{"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":["Engenharia elétrica","Análise modal","Elos de corrente contínua"]}]},{"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/11422/6437"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In Brazil, the rst DC transmission systems have traditionally been constructed as asynchronous interconnections of CA networks. However, with the start-up of the bipoles associated to the Belo Monte complex, the interconnection will take place in parallel with the AC system of the National Interconnected System. In this dissertation, we present an analysis of DC transmission systems in parallel with AC systems from the perspective of small-signal stability of electric power systems. We present aspects related to linear and nonlinear representation of the DC link controls. The studies are performed using modal analysis techniques for power systems, as well as linear and nonlinear time domain simulations. The small signal theory is used to identify the critical modes of oscillation from the HVDC, in detriment of the stability margin. The simulations show that, in weak electrical systems, characterized by the low short-circuit ratio, a critical mode from the current control mode of the link may be responsible for triggering a voltage instability process."]},{"key":"dc:title","label":"Title","values":["Avaliação da estabilidade a pequenos sinais em sistemas CA/CC em paralelo"]}]}],"canonical_facts":{"dc:contributor.advisor":["Taranto, Glauco Nery"],"dc:creator":["Silvero, Oscar Miguel Santacruz"],"dc:date.accessioned":["2019-02-08T16:47:39Z"],"dc:date.available":["2026-05-16T03:05:14Z"],"dc:date.issued":["2017-08"],"dc:description.abstract":["In Brazil, the rst DC transmission systems have traditionally been constructed as asynchronous interconnections of CA networks. However, with the start-up of the bipoles associated to the Belo Monte complex, the interconnection will take place in parallel with the AC system of the National Interconnected System. In this dissertation, we present an analysis of DC transmission systems in parallel with AC systems from the perspective of small-signal stability of electric power systems. We present aspects related to linear and nonlinear representation of the DC link controls. The studies are performed using modal analysis techniques for power systems, as well as linear and nonlinear time domain simulations. The small signal theory is used to identify the critical modes of oscillation from the HVDC, in detriment of the stability margin. The simulations show that, in weak electrical systems, characterized by the low short-circuit ratio, a critical mode from the current control mode of the link may be responsible for triggering a voltage instability process."],"dc:identifier.uri":["http://hdl.handle.net/11422/6437"],"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":["Engenharia elétrica","Análise modal","Elos de corrente contínua"],"dc:title":["Avaliação da estabilidade a pequenos sinais em sistemas CA/CC em paralelo"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:16:21Z"}