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Sector coupling and the future form of the electricity and gas sectors
Švéda, Miroslav ; MA, Martin Šik, (referee) ; Radil, Lukáš (advisor)
This thesis deals with Sector coupling problematics. First, it deals with the development and present situation in the generation and consumption of electric power and the development and present situation in the extraction and consumption of natural gas in the Czech Republic and in the European union. Further, the thesis deals with Sector coupling, this concept is explained, and it is adumbrated what questions it deals with. Then, the technologies that can be achieved in the future of Sector coupling are introduced. Pilot projects of these technologies are presented as part of the discussion about these technologies. Finally, a consideration of the future use of Sector coupling technologies in the Czech Republic is given.
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Power-Over-Fiber power supply
Kos, David ; Vlček, Čestmír (referee) ; Drexler, Petr (advisor)
This thesis deals with the possibilities of energy transmission by optical fiber for the purpose of powering of electronic systems. It comprises issues of electrical energy conversion to optical energy, coupling the power into the optical fiber, coupling between fiber and opto-electric transducer, conversion of optical energy to electrical energy, and transformation on required voltage levels. The principles of such Power-Over-Fiber are discussed in the first part of the work. Various technologies for the implementation of key system parts and their effectivity are discussed. In the next part, several Power-Over-Fiber commercial devices are compared. Subsequently, systems for Power-Over-Fiber experimental implementations are proposed. They are based on the utilization of semiconductor laser, multimode fiber, photovoltaic cell and related electronic circuits. The final part of the thesis deals with the construction of experimental systems and measurement of parameters of transmitted power and efficiency.
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Accumulation of electricity from renewable sources
Dědek, Dušan ; Pavlů, Jaroslav (referee) ; Pospíšil, Jiří (advisor)
This work is specialized on problems accumulation electricity power from renewable sources and production electricity power from renewable sources for select object. First part describes renewable sources and their use in our conditions. Second part is specialized on accumulators specific for renewable sources. Third part compare to production electricity power from photovoltaic power station and windy power station and their combination for select object. Further accumulation these select sources. Final fourth part describe about their comparison from position how of technical so economic.
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Pump storage station
Šimek, Petr ; Sloupenský, Zdeněk (referee) ; Kubálek, Jiří (advisor)
This bachelor thesis deals with the functions of hydro-power plants, describes the various machinery and their distribution according to the parameters of use. Outlines the calculation in the design of hydraulic machines. There are also descriptions of machine layout and their use in praktice. For the particular case, there is prepared hydro power plant Dlouhé stráně. Related topic that is included here, the electricity system and the daily load diagram.
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Fuel cells
Ralbovský, Peter ; Škvařil, Jan (referee) ; Chroboczek, Libor (advisor)
This bachalor’s thesis deals with a fuel cells technology, their principle and division. There’s also describes how to obtain hydrogen from natural gas as fuel. Furthermore, there are advantages and disadvantages of fuel cells. At the end of the work there are applications of fuel cells and their use in cogeneration and trigeneration.
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Analysis of possibilities for use of III. and IV. generation of nuclear reactors for the Czech Republic
Gajdzica, Lukáš ; Kopřiva, Radek (referee) ; Kopřiva, Radek (referee) ; Matal, Oldřich (advisor)
The thesis deals with the analysis of possibilities for use of III. and IV. generation of nuclear reactors for the Czech Republic. Introduction deals with basic principles of nuclear energetics and fuel cycle which is closely associated with the issue and its development and application in practice will have a significant effect both for choice of future types of nuclear reactors of IV. generation and the matter of settlement with spent nuclear fuel. In other parts the thesis deals with the present state of nuclear energetics in the Czech Republic, compares concrete chosen types of nuclear power plants of III. generation and generally describes nuclear reactors and power plants of IV. generation. Final part of the work is focused on questions concerning the possibility of construction of new blocks of nuclear power plants in the Czech Republic and presents concrete recommendation from author´s point of view.
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Unwarranted Energy Consuption Occurence Analysis Using of On-line Consuption Evaluation Provided by Remonte Reading Instalations
Samuel, Tomáš ; Kristek, Petr (referee) ; Orságová, Jaroslava (advisor)
The target of this project is to show the analyses of unauthorized subscriptions electricity consumption and provide the option of distribution networks screening on-line through istalment the devices providing remote control. This way of elimination the causes of unauthorized consumption has been not commonly used in the Czech Republic yet, it is pre-pilot project. We should be announced about the ways of measuring the electricity consumption used in past and nowadays. At present, there is a significant increase in case of unauthorized donations of electricity. Operators of distribution networks pay increased attention to these issues and develop efforts to reduce non-technical losses in the distribution and trade in electricity, which in its consequences lead to increase in costs with an impact in electricity prices. On business conditions and performance of government in the energy sectors and amendment of some laws the definition of certain terms of irregular donation electricity characterized by the provision of energy bill, which is a precondition for their qualifications. The analyses of unauthorized consumption based on on-line measuring with tending to make it easier and cheaper is useful for future, of course it might substitute the pretty expensive ways of measuring actual energy consumption. The result of it should by presentation of numeric energy flux diagram. There is a growing frequency and social insecurity of unauthorized of electricity and it is primarily on the distribution system operator, consistently privileges resulting from the energy bill and other generally binding regulations. The system lead to revealing unjustified interference with measuring equipment for which data on consumption are registered or recorded incorrectly or other useful functions.
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The Conversion Efficiency of Different Kinds of Energy into Electrical Energy and the Possibility of its Accumulation
Ostruška, Jan ; Bartošík, Tomáš (referee) ; Macháček, Jan (advisor)
The thesis deals with the issues of the conversion efficiency of different kinds of energy into electric energy. Firstly, the thesis presents a brief introduction into types of energy sources and their capacity. Then, conversion efficiency of particular direct and indirect conversion is scrutinized, pointing to factors which affect conversion efficiency. The next chapter deals with the possibilities of accumulating electric energy. These are analysed as far as conversion efficiency is concerned as well and the end of the chapter concludes with comparison of these particular possibilities. Booth parts of the process – power generation and its accumulation – are connected in comprehensive scheme of energy conversions. The thesis develops on this scheme by mathematic description of its components and by designing a simulation programme, which would show the flow of energy in the scheme.
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