Título principal
Estudo de proteção para sistemas de minigeração fotovoltaica e análise da influência da modelagem matemática do conversor estático [recurso eletrônico] / Antonio Almeida de Sousa Neto ; orientador, Miguel Moreto
Data de publicação
2024
Descrição física
150 p, : il.
Nota
Disponível somente em versão on-line.
Dissertação (mestrado) – Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2024.
Inclui referências.
Estudo de proteção para sistemas de minigeração fotovoltaica e análise da influência da modelagem matemática do conversor estático [recurso eletrônico] / Antonio Almeida de Sousa Neto ; orientador, Miguel Moreto
Data de publicação
2024
Descrição física
150 p, : il.
Nota
Disponível somente em versão on-line.
Dissertação (mestrado) – Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2024.
Inclui referências.
Abstract: With the expansion of distributed generation from renewable sources in the last decade, photovoltaic generation began to be present in energy distribution systems mainly through generating plants classified by current legislation as micro or minigeneration, whose power is limite to 3 MW by current ANEEL normative resolutions. With the insertion of photovoltaic generation and other sources that use power electronics interfaces in distribution networks, the need arose to use directional overcurrent protection and anti-islanding functions, which were previously not used in distribution systems, as there is now the possibility of bidirectional power flow between the system bars and the formation of islanding. Considering that protection studies for photovoltaic generators are not yet a consolidated topic in the literature, this dissertation deals with the protection study necessary for the connection of photovoltaic minigeneration plants to energy distribution systems, analyzing how the parameters of the mathematical model of the static converter interfere with the adjustment of protection functions, especially protection functions used against islanding. The protection study is carried out based on a photovoltaic minigeneration plant that will be implemented in a consumer unit that is already connected to a medium voltage distribution network. So that analyzes can be carried out, a methodology for calculating fault currents in the presence of static converters is proposed and detailed mathematical modeling is presented, in dq0 coordinates, of the current control loop and the synchronism structure of the static converter. The results achieved validated the methodology for calculating short-circuit currents and indicated that the current loop parameters of the mathematical model of the static converter significantly interfere with the system's response to faults and the synchronism structure in the adjustment of the anti-islanding protection.