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Abstract(s)
Este trabalho consistiu na elaboração do projecto eléctrico e de automação do sistema ventilação e desenfumagem dos Aproveitamentos do Baixo Sabor Escalão de Montante e Escalão de Montante. Para a elaboração deste trabalho foi necessário compreender os aspectos relacionados com o controlo de fumo e da ventilação. Nesse sentido este documento dá bastante enfâse aos aspectos relacionados com o controlo do fumo, nomeadamente as várias técnicas existentes, suas vantagens e desvantagens. Outra questão importante é a ventilação, porque dela dependem vários aspectos, como o controlo da temperatura no interior do edifico, qualidade do ar interior e pressurização de zonas de evacuação. O projecto descrito neste documento teve como base de trabalho os elementos relativos ao equipamento a usar em cada escalão, que foram fornecidos pelo dono da obra. A partir dessa base foi elaborado um projecto dos sistemas de comando e controlo para cada um dos escalões. O sistema de comando e controlo acomoda todos os interfaces necessários à sua interacção com os vários elementos que constituem o sistema de ventilação e desenfumagem de cada escalão. Na elaboração da solução de automação foi necessário desenvolver algoritmos específicos para tratamento e controlo de várias variáveis. Algoritmos para aquisição de medidas analógicas, conversão de escala, conversão de um valor binário para inteiro, média de três medidas, prioridade das bombas, detecção de fumos ou incêndio, defeito abertura ou fecho dos registos variáveis RV, defeito de abertura ou fecho dos registos motorizados, registos desenfumagem, registos corta-fogo, bloco horário e defeito do ventilador ou variador.
This work consisted in the elaboration of the electrical and automation project of the ventilation and smoke management system of Baixo Sabor upstream and downstream hydroelectric power station. For the elaboration of this work it was necessary to understand the aspects related to smoke control and ventilation management. In this sense, this document gives much emphasis to aspects related to smoke control, specifically the various existing techniques, their advantages and disadvantages. Another important issue is ventilation, because it depends on several aspects, such as temperature control inside the building, indoor air quality and pressurization of evacuation zones. The project described in this document was based on the elements related to the equipment to be used in each step, which were provided by the developer. From this base a project of the control and control systems was developed for each dam. The system of command and control system accommodates all the interfaces required for its interaction with the various elements that make up the ventilation and ventilation system at each step. In the elaboration of the automation solution it was necessary to develop specific algorithms for the treatment and control of several variables. Algorithms for acquisition of analogue measurements, conversion of scale, conversion of a binary value to integer, average of three measurements, pump priority, smoke or fire detection, opening or closing defect of variable registers RV, opening or closing defect of registers motors, smoke logs, fire registers, time block and fan defect or drive.
This work consisted in the elaboration of the electrical and automation project of the ventilation and smoke management system of Baixo Sabor upstream and downstream hydroelectric power station. For the elaboration of this work it was necessary to understand the aspects related to smoke control and ventilation management. In this sense, this document gives much emphasis to aspects related to smoke control, specifically the various existing techniques, their advantages and disadvantages. Another important issue is ventilation, because it depends on several aspects, such as temperature control inside the building, indoor air quality and pressurization of evacuation zones. The project described in this document was based on the elements related to the equipment to be used in each step, which were provided by the developer. From this base a project of the control and control systems was developed for each dam. The system of command and control system accommodates all the interfaces required for its interaction with the various elements that make up the ventilation and ventilation system at each step. In the elaboration of the automation solution it was necessary to develop specific algorithms for the treatment and control of several variables. Algorithms for acquisition of analogue measurements, conversion of scale, conversion of a binary value to integer, average of three measurements, pump priority, smoke or fire detection, opening or closing defect of variable registers RV, opening or closing defect of registers motors, smoke logs, fire registers, time block and fan defect or drive.
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Keywords
Desenfumagem Ventilação Pressurização Insuflação Extracção Comando Controlo Automação