Análise da estabilidade a pequenas perturbações do sistema elétrico de potência considerando a atuação do TCSC e controladores suplementares de amortecimento: representação pelo modelo de sensibilidade de corrente
Arquivos
Data
2013-11-29
Autores
Takahashi, André Luiz Miyahara [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O advento da energia elétrica e seu uso, ainda no final do século XIX, foram sem dúvida os grandes responsáveis pelo avanço tecnológico conquistado desde então. A oferta de energia para a população permitiu agregar maior conforto às pessoas e maior eficiência aos processos produtivos. Nos primórdios, os sistemas de energia eram compostos por unidades geradoras conectadas próximas aos consumidores. Essa proximidade era consequência direta do uso de transmissão em corrente contínua, o que naquela época inviabilizava a transmissão de energia elétrica através de longas distâncias. Com a invenção e utilização de máquinas de corrente alternada e transformadores, as características dos sistemas de energia passaram a ser de unidades geradoras cada vez mais distantes dos centros de consumo, sendo conectadas por longas linhas de transmissão de alta tensão. Pela metade do século XX, vislumbrou-se que a interligação de unidades geradoras, antes operando de maneira isolada, permitiria um melhor aproveitamento do potencial elétrico dos sistemas. Da mesma forma, a interligação dos consumidores permitiria maior confiabilidade no fornecimento de energia elétrica. Tais vantagens motivaram a interligação do sistema elétrico de potência. O que os visionários não poderiam imaginar era que a interconexão dos sistemas também traria novos problemas atrelados às oscilações de baixa frequência dos sistemas elétricos. Tais oscilações, em especial as relacionadas com os modos interárea, foram responsáveis por grandes blecautes ocorridos nos anos 1950 nos Estados Unidos e Canadá. Tornava-se evidente a necessidade de estudar e analisar tais oscilações, tal como o comportamento do sistema elétrico interligado como um todo quando submetido às contingências de grande e pequeno porte. Com as interligações os sistemas elétricos de potência se tornaram um dos mais complexos sistemas já desenvolvidos pelo homem. Tal...
The arising of electrical energy and its use in the end of 19th century are, for sure, one of the major responsible for the technology improvements conquered since then. The available of electrical energy for population also improved people's welfare and the production process efficiency. In the early days, electrical systems were composed by generator units connected close to consumers. This proximity was a straight consequence of DC (direct current) transmission, which one did not allow the transmission of power over large distances due to physical and economic constraints. With the development and use of AC (alternate current) machines and transformers, the electrical systems became composed of generator units far even more from consumer’s centers, being connected to them by high voltage transmission lines. By the 1950’s, it was noted that the interconnection of generators units, which was operating isolated from each other, would allow a better use of electric power system. From the same way, the interconnection of consumers allow more reliability in the electrical energy supply. Those advantages led to the interconnection of Electric Power Systems. What the visionaries could not imagine was that the interconnection would also bring to surface some new problems linked to the system´s low frequency oscillations. Those oscillations, in special those related to the interarea mode, were responsible for big blackouts occurred in the 1950´s in the USA and Canada. It was evident the necessity of study and analysis of those oscillations, also as the interconnected Power System behavior when under big and small contingencies. With the system´s interconnection, Power Systems became one of the most complex systems already built by the man. Such complexity is extended for its analysis and study. Due to this, it was necessary create models to simplify the analysis without a loss in the results reliability. As regards to the study of small ...
The arising of electrical energy and its use in the end of 19th century are, for sure, one of the major responsible for the technology improvements conquered since then. The available of electrical energy for population also improved people's welfare and the production process efficiency. In the early days, electrical systems were composed by generator units connected close to consumers. This proximity was a straight consequence of DC (direct current) transmission, which one did not allow the transmission of power over large distances due to physical and economic constraints. With the development and use of AC (alternate current) machines and transformers, the electrical systems became composed of generator units far even more from consumer’s centers, being connected to them by high voltage transmission lines. By the 1950’s, it was noted that the interconnection of generators units, which was operating isolated from each other, would allow a better use of electric power system. From the same way, the interconnection of consumers allow more reliability in the electrical energy supply. Those advantages led to the interconnection of Electric Power Systems. What the visionaries could not imagine was that the interconnection would also bring to surface some new problems linked to the system´s low frequency oscillations. Those oscillations, in special those related to the interarea mode, were responsible for big blackouts occurred in the 1950´s in the USA and Canada. It was evident the necessity of study and analysis of those oscillations, also as the interconnected Power System behavior when under big and small contingencies. With the system´s interconnection, Power Systems became one of the most complex systems already built by the man. Such complexity is extended for its analysis and study. Due to this, it was necessary create models to simplify the analysis without a loss in the results reliability. As regards to the study of small ...
Descrição
Palavras-chave
Sistemas de energia eletrica - Estabilidade, Eletronica de potencia, Electric power system stability
Como citar
TAKAHASHI, André Luiz Miyahara. Análise da estabilidade a pequenas perturbações do sistema elétrico de potência considerando a atuação do TCSC e controladores suplementares de amortecimento: representação pelo modelo de sensibilidade de corrente. 2013. 129 f. Dissertação (mestrado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia de Ilha Solteira, 2013.