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Electrical installations in apartment building
Novotný, Jan ; Formánek, Marian (referee) ; Doležalová, Jana (advisor)
This bachelor's thesis deals with electrical wiring in apartment building. The aim is to describe the types of distribution networks, implementation possibilities of service lines, describe the individual parts of the wiring in the building and the principles of their implementation. Further describe basic electrical materials and to explain the design of artificial lighting. In the practical part the information applied to a particular apartment building, together with the calculation of the estimated annual energy consumption of flats. For the apartment building project is created in the form of engineering report and drawings.
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Filament Winding Machine
Dorňák, Michal ; Hampl,, Štěpán (referee) ; Foller, Bronislav (advisor)
The aim of this diploma thesis is the proposal of solution of three-axial winding machine for winding technology of rotary profile. Winding materials are continual springs of carbon, aramid or glass fibre impregnated by resin. The main construction change of the machine compared to commercial available solutions is the use of linear motor as a frame element instead of roller screws or toothed chain. Linear motors have higher dynamics of the movement and they can reach higher speed compared to other solutions, which guarantee increase of the machine productivity. The main importance is put not only on the functionality but also on the low price of this solution. The 3D model of the mechanism is created in the program Inventor 2009.
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Load flow analyses of reactive power in distribution system
Krátký, Michal ; Kašpírek,, Martn (referee) ; Topolánek, David (advisor)
This thesis is focused on issues with transmission of reactive power though the distribution line of E.ON area. The goal is to find out where and in what rate are overflows of reactive power and to project the correctional steps to minimize this overflow. In this solution, there were used data of dispatcher measurement, which were processed by created source code in Matlab. The processing was analyzed for final conclusion. There were discovered shortages in overflow of reactive power in transfer between distribution and transmission line and in unsuitably regulated capacity power factor in Planá power plant and wrong automatic regulation of turns in 440/110kV substation Dasný. The action to minimize overflows of reactive power was projected by decompensation reactor placed in T101 and T102 transformers in substation Tábor.
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RF power meter
Hlaváč, Štěpán ; Jedlička,, Petr (referee) ; Drexler, Petr (advisor)
This master’s thesis describes various principles of measurement of electromagnetic waves in a free space and on a line. Used sensors and their real parameters are given for every method. The analysis of protections of high-frequency inputs of measuring instruments is done here and the most suitable method and protections of input for realization are chosen. The analysis of design of secondary protection of high-frequency input is done in this project. The protection of input is realized and measured. The suitable method of measurement is chosen as well as the sensor for measurement of power. The block diagram and circuit diagram of the meter of power are designed. According to designed conception the measuring instrument for measurement of power is realized and its single qualities are measured during the realization. In the final part its precision is measured and the evaluation of results is done.
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The Effect of Control on the Evaluation and Motivation of Employees
Voňavka, Adam ; Slavíček, Vojtěch (referee) ; Konečný, Štěpán (advisor)
This work is focused on motivating and evaluating employees in a gastro company, analysis of these activities and their effect on staff behavior to corporate finance and property in general. The first part describes theoretical background issues, basic concepts and their relationships. Then where is the problem thoroughly analyzed and practical examples of problems and their current solution are included. After this comprehensive introduction to the topic, new solution will be proposed, which would have the maximum possible effect through theoretical knowledge, logical reasoning, and ultimately practical experience and analytical calculations.
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Chalder for grinder Jupiter 125
Novák, Aleš ; Jansa, Jiří (referee) ; Blecha, Radim (advisor)
Thesis deal with proposal construction Chalder for centreless grinding machine Jupiter 125. Chalder is designed for workpiece with maximum average 12 mm, maximum longitude 120 mm and mass 0,1 kg. In the thesis are described components that were used at solving and intended time exchanges workpiece, the economics estimation and processed needed design documentation.
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Stabilized operation of the 220 kV power line
Staněk, Pavel ; Ptáček, Michal (referee) ; Blažek, Vladimír (advisor)
This thesis deals with methods of solving lines under voltage levels of very high transmission voltage and extra high voltage. The first, theoretical part of this paper analyses different methods how such lines are solved. In particular, an accurate solution is provided simulated by means of a line with evenly distributed parameters, and an approximate solution simulated by means of a line with lumped parameters. Furthermore, special cases of steady running conditions of the line are reviewed, such as no-load running, short-circuit and line operation with natural load. In conclusion of the theoretical part is given a general method of solving an extra-high-tension and extra high voltage network; also, some graphical methods of solving such networks are shown including their brief description. The second, practical part of the present paper involves application of the above mentioned methods of solution on a specific line with given parameters, solving conditions at the power line under steady running conditions and in special cases of the line operation. The conclusion of the thesis summarizes the obtained results.
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Electricity blackout study with regard to the nuclear power plant Dukovany
Žák, Jiří ; Fejta, Libor (referee) ; Radil, Lukáš (advisor)
The entire diploma thesis analyses causes, consequences and repercussions of an electricity grid network blackout and its impact to the respective consumers. Remarkable blackouts recorded since 1965 are briefly described and basic available information is considered. The grid standard fixing measures and electricity delivery priorities are characterized. The thesis also pays attention to entire Czech Republic grid availability and its blackout endurance as well as to its robustness within last several years. Indirect Fukushima event influence to the Czech Republic electricity system is mentioned. The main part of the thesis comprises of four big European grid blackouts causes and consequences, their comparison to each other and to the Dukovany nuclear power plant grid blackout drill scenario. The preventive and standard corrective measures against blackouts are pointed out.
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Stabilized operation and short - circuit conditions within E.ON 110 kV power network supplied from Slavětice 110 kV switching station, during the period of 2011
Nábělek, Ondřej ; Rampl, Martin (referee) ; Blažek, Vladimír (advisor)
In the Master Thesis discusses the impact of the bridge connecting the transformer to power system connection to a separate transformers. They were first analyzed the method of calculating the steady operation of the network using the Newton iterative method and the method of calculating short-circuit ratios. It describes the area Slavětice 110kV substation, which is the subject of subsequent calculations. It is also elucidating the function of the bridge connection, advantages and disadvantages. The reason for implementing the bridge operation is to increase the reliability of electricity supply to customers but the major disadvantage is the greater technical and economic performance because increased short circuit current and the need for transmission transformer 400/110kV same type with the same parameters. Point is the practical part, which contains already concrete results taken with the dispatcher software Sinaut. There is a short-circuit resistance compared to short-circuit power substation, then the burden of the elements (transformers, lines) for two specified connection alternatives and four interruptions important elements. Finally, it stated that it can be done with the bridge connection which technical measures. It was discovered that in terms of short-circuit ratios in the present time it is not possible to operate the bridge connection transformers substation Slavětice 110kV and in terms of very different parameters of transformers 400/110kV the operation is not recommended.
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Proposal of a Real Estate Company Organisation Structure
Gilar, Petr ; Kledus, Robert (referee) ; Pavlíková, Andrea (advisor)
The presented dissertation is concerned with legal problematics connected to founding of real estate trading company, its hierarchy, and possibilities of managing and directing of this type of company. Futhrer, the dissertation investigates possibilities of such enterprise to be incorporated in one of the occupational unions (organizations). Least but not last, the paper researches the services that should be provided by a professional company of such type. The dissertation is divided into theoretical and practical part. Theoretical part builds on the Commercial Code, where the rules concerning trading company are founded. However, the dissertation also uses various textbooks on management which describe various types of organization structures, that have been created by advancement in organization of human activity. In the practical part, I shortly mention the importance of the hierarchic order of a given society in reaction to a change in development on the real estate market. I also investigate the possibilities of real estate companies to create occupational unions (organizations). Further, I describe advantages and disadvantages, as well as the specific aspects of such behavior. The backbone of the dissertation is the fifth chapter. It is dedicated to the proposal of an organization stucture of a Real Estate company, as well as to the choice of legal form such a company should occupy, and finally, it is dedicated to the services, which should be provided by such company.
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