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Modern approaches to designing electrical equipment with a focus on railway construction
Forejtník, Jan ; Pěcha, Jiří (referee) ; Bátora, Branislav (advisor)
The topic Modern Approaches to Designing Electrical Equipment with a Focus on Railway Construction responds to the decision of the Government of the Czech Republic to introduce the BIM method for government over-the-counter contracts from 1 January 2022. The government evaluated the BIM method as an effective tool for digitizing the construction industry. The diploma thesis deals with the method of designing high-current equipment, technologies and distribution on railways according to this new method. The work summarizes information about the present method of design, used high-current electrical equipment on the railway, the near and distant future of railway operation, the organization of administration and maintenance of equipment. It discusses the principle of the BIM method and basic software solutions supporting design activities according to this new method. The Promis.e software published by Bentley is also described in detail, which supports the design of electrical equipment for linear structures according to this method. The BIM method is a means of fulfilling the essence of Construction 4.0. It uses uniform data formats, a common data environment, working with non-graphic information. In the second part of the diploma thesis, the drawing documentation for the sample project of high-current distribution of the railway station was prepared. It was first created using AutoCAD software. After that, the sample project demonstrates the basic principles of the BIM method using Promis.e software. Furthermore, this project is evaluated, both methods of design are compared. The procedure of introducing the BIM method for the design of electrical equipment in a specific design company is proposed and other possible steps in working with the Promis.e software are discussed. The way of creating a and adding element libraries is described. At the end of the diploma thesis it is stated that to successfully master the design work according to the BIM method, it is necessary to have experience with design work in the field, know the principles of the BIM method, choose a suitable software solution, continuously and thoroughly manage these tools and train staff. Under these conditions, it will be possible to make full use of the potential of the BIM method.
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Compilation of physical model of air-water heat pump
Maléř, Kryštof ; Pěcha, Jiří (referee) ; Mastný, Petr (advisor)
The aim of this work is to design and build the physical model of a heat pump based on the air-water conception. The first part of thesis is focused on the description of the principles of heat pumps and their various kinds. Next part deals with the design of the specific heat pump. This part also involes a detailed description of used components and documentation for construction. The heat pump was then assembled and the basic operating characteristics were mesaured.
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Design for a photovoltaic plant on the roof of a house
Kattauer, Jakub ; Haluza, Miroslav (referee) ; Pěcha, Jiří (advisor)
This bachelor thesis is focused on the issues of the fotovoltaic-electricity which is situated on the rooftop of the family house. The first part of this thesis deals with a solar radiation in the region of the Czech republic, photovoltaic conversion and electric attributes of solar cells. In the following part is analysed current status of an available technology of a sollar cells. The next topic which you can deal with is a process of the manufacturing of solar cells, basic selection and partition of inverters, construction and with the manufacture of the several kinds of connection. The next chapter is about to explain how you can gain an aid of the state from the bottom to the nowadays. The last part of this thesis is dedicated to a specific proposal of the fotovoltaic factory on the rooftop, calculation of an investments that are need to be paid and enumeration of a possible financial return.
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Possibilities of using small hydroelectric power plant in the wastewater treatment plant
Krúpa, Lukáš ; Haluza, Miroslav (referee) ; Pěcha, Jiří (advisor)
This bachelor’s thesis focuses on the possibilities of using small hydroelectric power plant in wastewater treatment plant. The first part is theoretical and describes the theory of wastewater treatment plants, small hydro power plants, turbines and generators. The seconds part focus is to describe the design of small hydro power plant. It begins with description of location then continues with calculation of Banki turbine and ends with generator selection. The last part deals with an economic evaluation, which includes estimating of the investment costs, the price of saved electricity and determining the estimated return on investment. In conclusion the thesis compares the ways of using the produced electricity.
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Regulation options of renewable energy sources
Pavlíček, Jiří ; Morávek, Jan (referee) ; Pěcha, Jiří (advisor)
This bachelor's thesis deals with the regulation of renewable energy sources. It focuses on ways of managing and possibilities of regulation renewable energy resources. Indicates the proportion of various types of renewable energy sources in electricity production and their representation in the electrical load profile. Thesis describes the various storage systems, which can be used to stabilize the renewable energy sources. Evaluate the applicability of these storage systems in the energy sector.
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The use of technical analysis to determine the prices of energy commodities
Kopunec, Kristián ; Pěcha, Jiří (referee) ; Radil, Lukáš (advisor)
This work is focused on the problems of technical analysis and the technical indicators themselves. It deals with trends, graphs and formation issues. It clarifies them individually. It focuses on technical indicators. It deals in particular with price indicators that are key to selecting the appropriate key method. Using available information from OTE. The selected indicator is counted and then applied to a suitable commodity. The role of the work is to predict the market development using technical indicators and to evaluate the possibilities of the given indicator.
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The projekt of the small water power station
Steidl, Adam ; Pěcha, Jiří (referee) ; Matoušek, Antonín (advisor)
This Bachelor thesis deals with a concept of a small hydro power plant. The first part is focused on hydro power potential of the Czech Republic, the general theory of small hydro power plants and their division. The following part discusses about the selection of suitable localities for construction of small hydro power plant and the decision of choosing the best of them. The selected locality is described and evaluated. Subsequently, the thesis deals with the theory of water management and hydro power solution of small hydro power plant. Futher the concept of a small hydro power plant is outlined. This concept consists of a theoretical solution of the hydraulic circuit and more detailed it focuses on the selection of appropriate sets. Then the thesis characterizes the concept of electric part of the small hydro power plant and its connection to the Distribution network. This part of thesis is aimed to compensation of reaktive powers, a concept of cabel for pulling of power of power plant, protections and automatization of the small hydro power plant. Finally, the economic evaluation of the investiment is done.
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Markets and Electricity Trading from Renewable Sources in EU
Pěcha, Jiří ; Čambala, Petr (referee) ; Macháček, Jan (advisor)
The submitted diploma thesis describes particular types of European energetic exchanges, focuses in depth on principles market in Czech Republic and studies the price development on spot and futures markets. The main idea of this work is to focus on renewable energy sources (RES) and their influence on energetic markets. At first, operational and reliability properties of RES are explained and then their development support is analyzed. Last chapters focus on how the power grid is impacted by RES that are hardly predictable source with local production characteristic. There are also outlined problems originating from irregular production that are linked to a surplus of electric energy, but also on energy shortage caused by bad weather. These problems influence international commerce and reduce the capacity of cross-border profiles.
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Rooftop photovoltaic system and its return of investment
Burián, Michal ; Radil, Lukáš (referee) ; Pěcha, Jiří (advisor)
The Bachelor’s Thesis is focused on a potency of using the Rooftop photovoltaic system, like the investment project. The general principle of the photovoltaic transformation and eventual utility of a sun solar radiation in Czech Republic is described in the first part of the Thesis. Furthermore there is a overview of approachable technology of the photovoltaic systems. The third part contains a review of inverters and photovoltaic systems integration. Following the complete concept of the Rooftop system and the calculation of capital expenditure for the selected property. Finally, the last part of the Thesis attend to summarize produced aggregate energy, the profit assignment due to service system. The main aim is to evaluate the Rooftop photovoltaic system and its return on the investment due to operating costs.
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