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Simulation of small wind power plant with Savonius-Darrieus rotor
Hořava, Pavel ; Radil, Lukáš (referee) ; Ptáček, Michal (advisor)
This master‘s thesis deals with the simulation of small wind power plant with Savonius-Darrieus rotor. On the base of the actuator disk theory the performance of modeled power plant is predicted in theoretical part and the power coefficient as well. The process of designing the wind model is also described in this theoretical part. The practical part of this thesis is dedicated to the creating a model of DS300 vertical axis hybrid wind turbine in Matlab/Simulink. This model was used to generating of the power curve of modeled wind power plant and for the computing of power and total produced energy during an average and above-average day as well. The whole thesis is enclosed by evaluating of obtained results.
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Ecological problems energetics CR
Mahdal, Vlastimil ; Ptáček, Michal (referee) ; Matoušek, Antonín (advisor)
This project presents the current state of power engineering, power resources in the Czech Republic and the impact of power resources on the environment. The first chapter describes the nature of the power engineering of the Czech Republic and the structure of primary energy sources, the next chapter present the current state of electricity, there is also described the structure of instaled capacity, consumption and production of electrical energy. The following section describes the impact of the power stations on the environment and their current status in the Czech Republic. The practical part provides information of calculating emissions using emission factors for power stations of company ČEZ, a.s. and about the storage of nuclear waste. The last chapter is dedicated to reducing carbon dioxide emissions in the European Union and describes measures in the Czech Republic for reducing these emissions.
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Increasing the electric power of photovoltaic power plant connected to distribution network in a given area
Klobučník, Jozef ; Novotný, Jan (referee) ; Ptáček, Michal (advisor)
This bachelor’s thesis deals with increase of the power of photovoltaic power plant Horné Túrovce. There are two proposed possibilities how to increase the power. The theoretical introduction of the bachelor’s thesis is focused on the description of the main parts of the photovoltaic power plants. There are the technologies of the photovoltaic cells production as well as components of the photovoltaic system stated. There is further description of the photovoltaic panel’s function, principle and types of inverters, the impact of the photovoltaic power plants on the distribution network. There is the working procedure of connecting the new source and the technology of the power output to the distribution network described. The bachelor’s thesis provides technical description of the selected photovoltaic power plant Horné Túrovce and technical proposal to increase the output of photovoltaic power plant Horné Túrovce designed for both variants. The fourth section deals with methods of verifying connectivity of the photovoltaic power plants to the distribution networks and with the bad impacts on the distribution network. In the last part is a practical calculation to verify the possibility to connect production to the distribution network after the increase of the power for both variants and calculation of the bad impacts on the distribution network.
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Design of autonomous energy source with photovoltaic and wind power sources
Bršťák, Jan ; Bartošík, Tomáš (referee) ; Ptáček, Michal (advisor)
The ability to accumulate electric power is one of the most important and the most developing field in power engineering. Contemporary problems of electric power production from photovoltaic and wind sources are their varying outputs set by the weather conditions. These disadvantages can cause various problems (particularly there are supplied outputs into distributional system that runs for on-grid systems). The hybrid system (photovoltaic + wind sources) and the accumulation of electric power solve the problems of their output fluctuation because they complement each other. This Bachelor’s Thesis is focused on the basic description of photovoltaic and wind sources and their electric power accumulation. One of the chapters is intended for the description of well-known and used electric power accumulators. There is also a general suggestion of cooperating photovoltaic and wind sources and its evaluation in the relationship to the distributional system. In the conclusion, there are evaluations of the hybrid system (photovoltaic + wind sources) used in praxis. There are also mentioned their advantages and disadvantages.
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Technical modification design of the electrical power systems for Modřice and its surroundings
Šerý, Petr ; Kopička, Marek (referee) ; Ptáček, Michal (advisor)
ABSTRACT This thesis is concerned with a technical modification of design of the electrical power systems for Modřice and its surroundings. The thesis describes a basic theoretical distribution of the electricity network and the distribution network itself. Following chapters are devoted to the development and construction of the HV networks and to the methods and ways of calculating the steady operation of the network. These methods are then used in the computational programs that are presented in the next chapter of this paper. The aim of the practical part of the thesis is to first determine the current state of the network in the given location. Furthermore, several modifications are proposed according to the requirements for increasing the power consumption or connecting the new supply places. The proposed modifications are further assessed for the different operating conditions. The result is a network that is functional, operational and reliable. The whole analysis is carried out in the PAS DAISY Off-line V4 Bizon computing program.
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Use of the railway traction elements for distribution system support
Dékány, Michal ; Radil, Lukáš (referee) ; Ptáček, Michal (advisor)
The bachelor thesis deals with the transition to a unified power supply system of the traction system of the Czech Republic. Describes the possibilities of using converters in various connections to improve the quality of electricity on the distributor side. The work presents current innovative solutions that use converters to support the distribution network by preventing the transmission of unwanted parameters from the traction network to the distribution network, such as higher harmonics, and also describes the possibilities of two-way power supply with their help.
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Operation of embedded cable lines into HV distribution grid
Černý, Tomáš ; Wasserbauer, Vojtěch (referee) ; Ptáček, Michal (advisor)
The thesis focuses on a section of cable line inserted into overhead high voltage power line. The essence is a description of the benefits, risks and impacts of the operation of such sections in terms of protection, transition processes. etc. The thesis also includes economical comparison of an acquisition and operating costs of both overhead and cable line. The topic of this thesis was given by ČEZ Distribuce a.s.
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Model comparison of restoration paths for a system power station in MODES and PSCAD
Peterka, Michal ; Helbich, Jiří (referee) ; Ptáček, Michal (advisor)
The thesis deals with the comparison of two restoration paths in case of the black start in the MODES and PSCAD simulation programs. The aim was to compare the voltage waveforms in individual nodes and the system frequency. At the same time, simulations were compared with a real test. The route models in the MODES program were created earlier and the task was to create the same routes in the PSCAD program using the parameters available from the MODES program. The route models in the PSCAD environment included both the original and the new models of individual elements, which had to be assembled from function blocks. The results of the programs differed slightly, which was caused mainly by the differences of some elements that were used. In the thesis, all the necessary information was stated to make the simulations repeatable.
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