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Mechanical screens for a small hydropower plant
Lesák, Martin ; Zeizinger, Lukáš (referee) ; Škopán, Miroslav (advisor)
In the introductory part of this bachelor thesis is performed a critical search of wiper mechanisms used to clean the screens of a small hydroelectric power plant. The work also contains a substantiated concept of the proposed solution, strength calculations of important structural elements and drawing documentation of selected components.
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Feasibility study of small hydro power plant on the river Papradnianka in the district of Povážská Bystrica
Barenčík, Ladislav ; Haluza,, Miloslav (referee) ; Šulc, Jan (advisor)
The main purpose of this bachelor's thesis is the design of conceptual solution of a small hydroelectric power plant on the river Papradnianka in the Prúdy area and a feasibility assessment of this project. Hydrological data and a selection of the most appropriate type of power plant are revaluated in the first part of this bachelor's thesis. A selection of appropriate technology and individual parts of small hydroelectric power plant are described in the following part. Economic return of this project is assessed in the last part. According to the results of this bachelor's thesis, this project is technically realizable, but the return of investment is big due to current prices of energy .
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Water energy potential in breeding tanks
Schittenhelm, Dominik ; Radil, Lukáš (referee) ; Morávek, Jan (advisor)
The thesis is divided in several parts. The first part is theoretical and its main focus is the description of hydroenergy and the theory regarding water turbines and their potential use in small hydro powerplants.The second part describes micro hydroelectric power plant design in fishery Bělidlo. It begins with calculation of the waterflow rate based on the performed measurements. The thesis further describes the actual design of Banki turbine with generator and gear unit selection. The last part of the work deals with estimating construction costs and production of electricity and also of awaiting investment return time.
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Small hydroelectric power plant design
Števček, Tomáš ; Radil, Lukáš (referee) ; Mastný, Petr (advisor)
The thesis is structured in two parts. The first, theoretical one, describes hydroenergy, components used in hydroelectric power plants and water turbine fundamentals. The second part, concerning small hydroelectric power plant design, aims at studying possible utilization of the Biely Váh watercourse, for the purpose of a power plant construction. In selected location, earth-filled dam with intake tower was designed, with a generator room situated under the dam. In mechanics part, there were devised two cross-flow turbines attached to generators through two-speed gearboxes. In electrical part of the design, asynchronous generator was selected, electrical protection of power plant was specified and main electrical scheme was designed. Lastly, construction costs were estimated and by economic evaluation of design was found, that small hydroelectric power plant construction in this location can be viable in the case of state grants provided.
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Plan of grid connection for small hydroelectric power plant
Miškovský, Ján ; Wasserbauer, Vojtěch (referee) ; Radil, Lukáš (advisor)
The purpose of the thesis is a plan of grid connection for a small hydroelectric power plant in Rastak. The introduction briefly analyses the scheme, MVE, description of the particular constructive parts and specified technical equipment as well. The main goals of the study were choice of suitable transformer, the proper VN substation as well as a plan of overhead power lines. Particular attention was paid to: figuring the short circuit current and mechanical strain, the best choice of electric field VN substation for MVE, the transformer connection in the point VN substation and geometrical measurement of its power line with 35 kV voltage summing up, it can be concluded that above mentioned is crucial to cooling of the transformer in Raštak.
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Hydraulic analysis in the surrounding of hydro power plant
Lorenc, Václav ; Roth, Tomáš (referee) ; Duchan, David (advisor)
The diploma thesis deals with analysis of flow ratios at the hydraulic plant Klecany – Roztoky, located in the region of Střední Čechy at Vltava river (km 37,08). At this site 3D streaming of superficial water was simulated aiming to evaluate the influence of potencial construction of the new hydroelectric power plant Klecany II on existing Klecany I. Using all of the base documentation available, 3D models of current and planned conditions were created to serve as base for calculation in FLOW 3D. The first part of the thesis describes, how the planned construction of the new hydroelectric power plant Klecany II could influence the current fairway at the inlet 400 m3/s. The second part analyses shape of planned flow hydroelectric power plant Klecany II for flow Q90d, equal to 180 m3/s. All of the results are presented in intelligible charts and images.
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Technical design of an alternative to the small hydropower plant Ejpovice
Mitrega, Stanislav ; Jobánek, Stanislav (referee) ; Šulc, Jan (advisor)
The main purpose of this bachelor’s thesis is a new design of a small hydroelectric power plant Ejpovice with non-pressure and pressure derivation. The non-pressure part of a waterway includes design of a weir, culvert and an inlet channel. The pressure part of a waterway includes an intake object and an original tunnel. The design review includes two variants of a waterway. In the first variant water is running straight through the tunnel. The second variant is considering with a glass reinforced pipe that will be installed in the tunnel so the tunnel won’t be flooded. At first the thesis analyses all the sources for the preparation of a design and discribes an area of interest. Below the thesis presents a design of all the new building objects and technological equipments. Detailed restoration of the tunnel is also described. In conclusion of the thesis, there are calculations of a power generation and an economic analysis of both variants. The payback period of the second variant is significantly longer than the period of the first variant although an alternative design doesn’t require a comlicated restoration of the tunnel. On the basis of this fact I recommend to implement the first design.
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Bánki-Michell turbine set and its maximum power point control
Marčok, Samuel ; Baculák,, Tibor (referee) ; Červinka, Dalibor (advisor)
This master’s thesis focuses on maximalization of power point of Bánki-Michell turbine and asynchronous generator set in small hydroelectric powerplant with the use of frequency converter. The first chapter addresses the history, division, and construction of hydroelectric powerplants. The following two chapters describe mechanical and electrotechnical equipment that is necessary for correct design of the control. The fourth chapter describes control possibilities of asynchronous generator and Bánki-Michell turbine set. As a verification of correctness, master´s thesis involves simulation in Matlab-Simulink. Results of this simulation are addressed in the fifth chapter, where systemic behaviour in selected control approach with the maximum power point of the set is considered. The most extensive chapter is the sixth one, because it depicts detailed description of measurement in speed or torque control. Last chapter summarizes and compares measured dependences with expected systemic behaviour derived from simulation. The conclusion of this thesis raises another possibilities for improvement of water potencial usage and describes the contribution of frequency converter.
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