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Abstract(s)
Este trabalho pretende caraterizar exaustivamente as subestações e destacar a sua importância nos sistemas elétricos de energia, nomeadamente, analisar o papel preponderante dos sistemas de serviços auxiliares AC e DC. Para apoiar o estudo, foi desenvolvida uma ferramenta automática de cálculo para estimação da carga elétrica nas subestações, ao nível do transformador de serviços auxiliares. Numa primeira etapa, foi criada uma base de dados com informação abrangente dos vários equipamentos das subestações. Esta informação será essencial para cálculo do consumo dos serviços auxiliares de uma subestação. Com o dimensionamento elaborado de forma eficaz, é possível evitar excessos e deficiências no dimensionamento do equipamento da subestação. Com este trabalho pretende-se maximizar o dimensionamento dos transformadores das
subestações, garantindo que sejam escolhidos de forma mais económica, lógica e eficiente para suportar a carga específica de cada subestação. A ferramenta desenvolvida irá não apenas melhorar a gestão da energia, mas também reduzir os custos operacionais e garantir a sustentabilidade ambiental em instalações de subestações AC/DC. Esta ferramenta permitirá uma avaliação mais precisa das necessidades de carga elétrica, fornecendo uma visão geral do sistema. A Dissertação apresenta a metodologia de cálculo e o respetivo algoritmo de suporte ao desenvolvimento da ferramenta de cálculo. É apresentado um caso de estudo para aplicação da ferramenta, resultando na melhor utilização de todas as suas funcionalidades e na otimização do sistema.
This work thoroughly analyzes substation features and emphasizes their significance in electrical energy systems. It will focus on studying the essential roles played by AC and DC auxiliary service systems. To facilitate this study, a useful automatic calculation tool has been developed to estimate the electrical load in substations at the level of the auxiliary services transformer. The initial step was to establish a database that contains comprehensive information regarding the different equipment used in a substation. This information is crucial for accurately calculating the consumption of auxiliary services required by a substation. By designing the equipment's size effectively, any excesses or deficiencies in the substation equipment's size can be avoided. The work aims to optimize the selection of substation transformers, ensuring that the most economical, logical, and efficient equipment is chosen to support each substation's specific load. The tool developed as part of this work will improve energy management, reduce operational costs, and ensure environmental sustainability in AC/DC substation installations. This tool will provide a more accurate assessment of electrical load needs, offering a comprehensive system overview. The Dissertation presents the calculation methodology and the respective algorithm to support the development of the calculation tool. A practical case study is presented for applying the tool, resulting in better use of all its features and optimization of the system.
This work thoroughly analyzes substation features and emphasizes their significance in electrical energy systems. It will focus on studying the essential roles played by AC and DC auxiliary service systems. To facilitate this study, a useful automatic calculation tool has been developed to estimate the electrical load in substations at the level of the auxiliary services transformer. The initial step was to establish a database that contains comprehensive information regarding the different equipment used in a substation. This information is crucial for accurately calculating the consumption of auxiliary services required by a substation. By designing the equipment's size effectively, any excesses or deficiencies in the substation equipment's size can be avoided. The work aims to optimize the selection of substation transformers, ensuring that the most economical, logical, and efficient equipment is chosen to support each substation's specific load. The tool developed as part of this work will improve energy management, reduce operational costs, and ensure environmental sustainability in AC/DC substation installations. This tool will provide a more accurate assessment of electrical load needs, offering a comprehensive system overview. The Dissertation presents the calculation methodology and the respective algorithm to support the development of the calculation tool. A practical case study is presented for applying the tool, resulting in better use of all its features and optimization of the system.
Description
Keywords
Substations transformers auxiliary services consumption diversity factor and sizing Subestações Transformadores Serviços auxiliares Consumo Fator de simultaneidade e dimensionamento