This diploma thesis deals with the design of hydraulic cleaning machine of fine screens located in the supply channel of small hydropower plant. The part of this thesis is also the design of hydraulic circuit and strength analysis using finite element method. The thesis also deals with the optimal debris removal. The thesis is attached by drawing documentation of selected parts of the mechanism.

This thesis focused on creating a model of a small hydropower plant model (SHPP) and a part of the electricity network in the simulation software "PSCAD" (basing on real sources). The model will be specified on the basis of the data obtained from the measurements to correspond with the real equipment.

The thesis is focused on the examination of the utility of a synchronous generator of a small hydroelectric power station in the case of a change of working position of the machine. The utility will be measured on the basis of the examination of deformations and state of stress of the frame of the generator for the present running (with vertical axis of rotation of the generator) and subsequently for modified running (with horizontal axis of rotation). This will be accomplished partly on the static shell model by finite element method and consequently on the simplified dynamic model.

Submitted by Tiago Martinez Giorgetto (tigiorgetto@uol.com.br) on 2012-05-28T13:35:54Z No. of bitstreams: 1 TMG_Dissertacao_Mestrado_Maio2012_Final.pdf: 972089 bytes, checksum: 2f6039567098db514bfb12b4ddf0896f (MD5) / Approved for entry into archive by Gisele Isaura Hannickel (gisele.hannickel@fgv.br) on 2012-05-28T15:30:44Z (GMT) No. of bitstreams: 1 TMG_Dissertacao_Mestrado_Maio2012_Final.pdf: 972089 bytes, checksum: 2f6039567098db514bfb12b4ddf0896f (MD5) / Made available in DSpace on 2012-05-28T16:44:23Z (GMT). No. of bitstreams: 1 TMG_Dissertacao_Mestrado_Maio2012_Final.pdf: 972089 bytes, checksum: 2f6039567098db514bfb12b4ddf0896f (MD5) Previous issue date: 2012-05-03 / A Teoria das opções reais tem se mostrado um instrumental relevante na fundamentação das decisões de investimento de diversos agentes na economia, especialmente no que tange a projetos de infraestrutura, pesquisa e desenvolvimento. Dado que o setor energético brasileiro possui um arcabouço institucional que possibilita que diversos agentes privados atuem no setor, a avaliação de empreendimentos de geração de energia ganha destaque, fazendo com que a aplicação desse campo de pesquisa torne-se promissor. Assim sendo, o objetivo desse estudo é avaliar a tomada de decisão em investimentos no setor elétrico brasileiro tendo como base a aplicação da Teoria das opções reais. Para esse estudo foram selecionados, como objeto de análise, as usinas eólicas e as pequenas centrais hidrelétricas. Por meio da Teoria das opções reais conclui-se que a opção de adiar a construção de um desses empreendimentos pode gerar valor para o empreendedor. Além disso, verifica-se que as pequenas centrais hidrelétricas 'dominam' a maioria dos cenários de investimento estudados quando os preços de energia estão em alta, mas caso haja perspectiva de queda de preços no mercado de energia, porém, a decisão torna-se favorável às usinas eólicas. Por fim, é possível verificar que a análise conjunta de empreendimentos de geração de energia através, por exemplo, da abordagem quadrinomial, pode trazer ganhos na avaliação de projetos de investimento no setor elétrico. / Real Options Theory has been an important instrument for investment decisions for several agents in economy, especially for infrastructure projects, research and development. Since Brazilian energy sector has an institutional framework that enables several private agents to act in this sector, the valuation of energy generation projects is highlighted. As consequence, the application of Real Options Theory becomes promising. Therefore, the objective of this study is to evaluate the decision making on investments in the Brazilian electricity sector based on the application of Real Options Theory. For this study were selected for analysis the Wind Farms and the Small Hydro Power Plants. Through Real Options Theory we concluded that the option to defer the construction of these projects can generate value for the entrepreneur. Furthermore, it appears that the Small Hydro Power Plant "dominates" the majority of investment scenarios studied when energy prices are higher but, if there is perspective for prices reduction in the energy market, however, the decision becomes favorable for Wind Farms. Finally, it is possible to verify that the “joint analysis” for projects in energy generation through, for example, quadrinomial approach can bring gains for investors in energy sector