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Accumulation of energy from renewable sources
Charvátová, Marie ; Bajko, Jaroslav (referee) ; Fišer, Jan (advisor)
This bachelor’s thesis deals with the issue of accumulation of energy from renewable sources with a closer focus on electricity storage in the "small/home" scale. Delivering energy from renewable sources is highly variable and, in order to cover the time shift between production and consumption, energy must be stored. In the paper are described individual types of energy used in residential housing, sources of renewable energy are presented and various ways of energy accumulation are analyzed. The greatest attention is paid to chemical accumulators, because they are the most suitable solution for home use due to their practicality. At the end of the thesis, operational data from a small demonstration photovoltaic power plant with accumulation of electric energy in chemical accumulators are processed and evaluated.
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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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Accumulation of electricity from renewable sources
Špičák, Ladislav ; Kohout, Přemysl (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis is specialized on problems of electrical energy accumulation from renewable resources. This renewable resources used in Czech Republic are described in the first part. Next, in the second chapter is identification with principles of electrical energy accumulation. In the third part, there is a proposal of electrical energy accumulation system which makes a supply of electrical energy from photovoltaic system by the help of accumulation system in compressed air equally. In the final part, there is a total analysis of technical economic aspect for proposed system.
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Solar Concentrator System with Automatic Tracking System
Žák, Martin ; Sumec, Stanislav (referee) ; Baxant, Petr (advisor)
This master’s thesis is focused on current possibilities of solar energy utilization – especially on concentrating solar power systems – and their optimization using solar tracking systems to maximize energy gain. The thesis also deals with solar position algorithm and offers an Arduino based automatic dual axis solar tracker design which provides various solar devices the ability to pivot using stepper motors, DC motors or servos. The motion might be driven by calculated solar position or by actual illuminance.
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Influence of RES to power system in Czech Republic
Vánišová, Michaela ; Bartošík, Tomáš (referee) ; Mastný, Petr (advisor)
This text deals with renewable energy sources in terms of working on the electricity network of the Czech Republic. There is the definition of renewable energy sources in the work. Next there are discussed the basic information about connecting to the distribution network. In two parts, there is mentioned and discussed the issue of operation of renewable energy resources and their effects in terms of the electricity network. The last chapter is focused on the possibility of further utilization of renewable energy sources because of their natural energy.
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Study the Effectiveness of Operation of Photovoltaic Power
Kozumplík, Miroslav ; Mastný, Petr (referee) ; Macháček, Jan (advisor)
The master’s thesis deals with study the effectiveness of operation of photovoltaic power station. The theoretical part describes the legislative steps that led to the development of photovoltaic power stations, not only in Czech Republic but throughout Europe. The following is a review of the issue of photovoltaics, which includes the development of photovoltaics in the world, research of photovoltaic power stations in the Czech Republic and technology of photovoltaic power stations. At the end of the theoretical part is a list of methods to evaluate efficiency investments. The practical part includes a description of the selected photovoltaic station Zakřany 5.4 MWp, financial projection and economic evaluation of the real operation and there is also explicit evaluation of the economic efficiency of the project.. The comparison of the projection and the real operation and the possible negative influences affecting the power station are in conclusion.
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Renewable resources of energy in Czech republic
Truhlář, Marek ; Fortelný, Zdeněk (referee) ; Chroboczek, Libor (advisor)
The content of this bachelor study is a technical recherche of the renewable resources of energy in the Czech republic. In the first part of the study there are described individual kinds of renewable resources of energy. The principle, the usage potential in Czech republic, some advantages and disadvantages about every topic are mentioned. In the second part the study is focused on usage of solar energy in the Czech Republic. The present state of used barrierlayer photocells and solar collectors is decribed in this part. In the last section there is a description of a photovoltaic power station in Otrokovice.
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Rationalization of the concept of photovoltaic power station connection
Svozil, Marek ; Otava, Lukáš (referee) ; Blaha, Petr (advisor)
This masters thesis addresses the racionalization of the concept of photovoltaic power station connection. A way of compensation valuable components involvement standar- tizovaným inverter controlled by a microcontroller. Also includes the measurement of voltage and current using a microcontroller. The output voltage of the DC/DC con- verter is controlled by the variable duty cycle of the PWM signal generated by the microcontroller ATmega32.
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Evaluation of nonstandard operation possibilities of power sources in MV network
Čáslava, Jiří ; Opat, Jaroslav (referee) ; Topolánek, David (advisor)
This Master's thesis deals with solution of nonstandard operation connection of E.ON's 22kV distribution network in given area, considering the possibilities of operating dispersed electric power sources currently available, as well as possible power sources connected to the distribution network in the future and its potential operation limitation. A part of this paper is a description of calculation methods used for network evaluation in steady state, with emphasis on linear calculations used by E-Vlivy program, in which the operational possibilities are simulated. Therefore, a description of this program is also included. Suggested operation possibilities correspond with E.ON's valid distribution network operation rules. The outcome of this paper will serve to E.ON's 22kV network's controllers as materials for network operating in nonstandard operation states.
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Power-accumulation from renewable energy sources
Kratochvíl, Tomáš ; Pavlů, Jaroslav (referee) ; Pospíšil, Jiří (advisor)
The diploma thesis is focused on problem of accumulating electric energy from renewable resources. The first section describes renewable energy sources, which are possible to use in the Czech Republic and principles of accumulating electric energy. In the following section are suggested systems of accumulating energy to accumulators by compressed air and pumped storage power station. These systems are proposed for uniform power supply from photovoltaic power station to electric power network all day. In conclusion, the suggested systems are compared from economic-technical perspective.
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