Development of modal analysis tools for systems with transport delays

• Ano de defesa: 2019
• Autor(a) principal: Machado, José Guilherme de Souza
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Universidade Federal do Rio de Janeiro; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia; Programa de Pós-Graduação em Engenharia Elétrica; UFRJ
• Palavras-chave em Português: Sistemas de potência; Análise linear; Estabilidade a pequenos sinais; Análise modal; Controle do amortecimento de oscilações; Atraso de Transporte; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
• Link de acesso: http://hdl.handle.net/11422/14037

[EN] This thesis proposes mathematical advances and computational methodologies to enable a comprehensive modal analysis using an accurate representation of transport delays. Contemplating the development of modal analysis tools for transport delay systems, the work presented here represents a breakthrough in the state of the art of stability and control of power systems. Given the recent widespread use of communication systems in power grids, the usual representation of transport delays turns the system model into a system with an infinite number of poles. As a result, traditional representations, such as state space and descriptor systems, become unfeasible. The proposed methodologies are analyzed through simulations in a tutorial system and in the Brazilian Interconnected System. The results obtained using the proposed formulation are compared with the historical representation and demonstrate the importance of more accurate modeling of transport delays in the evaluation of electromechanical stability problems.