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Design of instrument transformers for digital protection relays
Souček, Jan ; Matuška, Marcel (referee) ; Toman, Petr (advisor)
Master’s thesis is concerned with instrument transformers, which are used in conjunction with numerical protection relays. Therefore mainly with protective transformers of class P and transformers dimensioned for transient effects, which are important e.g. for fast differential or distance protections. The introduction includes fundamental notions, quantities and equations, which refers to instrumental current and voltage transformers. Below are mentioned connection diagrams of these transformers applied to specific electrical network types and faults, of which identification is required. These diagrams and faults are supplied with math equations and eventually with phasor diagrams. Noted informations corresponds to the present standards. Task of the next part is to compile requirements for dimensioning of current transformers, which imposes digital protections from ABB, AREVA and Siemens companies. These requirements, which mostly defines the minimal accuracy limit factor or the knee-point voltage of current transformer, are specified for individual protection terminals, eventually for specific protective functions. Part of the thesis is computer program developed as macro in the Microsoft Office Excel program via Visual Basic for Applications programming language. Program uses equations noted in this work and it can be used for quick dimensioning of current transformers for protective terminals from manufactures mentioned above.
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Information Strategy
Kratochvíl, Tomáš ; Dědič, Roman (referee) ; Koch, Miloš (advisor)
This diploma thesis is focused on the possibility of using modern approaches to information technology management. Specifically, it concentrates on demands for innovation of software development lifecycle management. The theoretical part of the thesis is focused on methods used in information strategy. Based on results of the analytical part, where I evaluate current approach to information technologies service management, I suggest solutions in the form of customer oriented information strategy and approach to the management of software development as a part of service lifecycle.
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Design Study of VFR Airport
Brandejský, Petr ; Veselý, Petr (referee) ; Ptáček, Pavel (advisor)
The final master´s thesis targets to create concept study of VFR airport.This airport should be build up in southeast part of Czech republic, in the vicinity of the town Valašské Klobouky. In this work there are explained essential terms and definitions refered to basic rules and law. There are explained also civil aviation law and requirements of L14 regulations. Aeroclub is submitter of this work. It establishes basic conditions for airport area searching. The length of the runway is influenced mainly by performance of used aircrafts. It was impossible to find any acceptable field in searched area. There is a posibility how to solve this problem. There can be build up a runway for take-off and landings of small aeroplanes. In the second part of this thesis there are defined basic requirements on these fields. These requirements are applicated on chosen field. At the end of this thesis there is propounded an option how to dislocate runway, taxiways, aprons, hangars and other buildings.
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Development of progressive polymer anchor material
Žlebek, Tomáš ; Jakubík, Aleš (referee) ; Drochytka, Rostislav (advisor)
The diploma thesis deals with development of a new progressive anchor material on the polymer base. Nowadays, it is effort to utilize secondary raw materials in building industry as much as possible both from an environmental aspects in order to save primary energy sources and the reduction of waste and also due to economic reasons. Therefore, there is an effort to utilize high amount of suitable and appropriately treated secondary raw materials into the anchor materials. The main aim of this work is to develop high quality anchor material characterized by excellent ratio between speed and strength growth, high chemical resistance, thermal resistance and particularly minimal shrinkage. This new material is designed especially for anchoring building structures heavy machines steel barriers and other elements.
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Requirements for Boeing B747-800 Operation on Praha-Ruzyně Airport
Nastálek, Ondřej ; Křížek, Jindřich (referee) ; Chlebek, Jiří (advisor)
The content of my master’s thesis is to point out operational requirements of aircraft Boeing B747-8 on Praha-Ruzyne airport. It determines unsuitable requirements of this aircraft on the airport and suggests suitable equipment for their removing. My thesis includes elaboration of the contemporary state of the airport requirements of the aircraft toward the airport and deals with evaluation of unsuitable airport parametres.
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Requirements for construction company executive in the knowledge economy period
Vostrčil, Michal ; Myšák, Ing Jaroslav (referee) ; Linkeschová, Dana (advisor)
This work "Requirements for construction company executive in the knowledge economy" in the theoretical part focused on who is the manager, what should have manager attributes, knowledge, skills and competence. It also features what the manager to perform and what role must hold. In the practical part of the bachelor hypotheses have been set, which I verified the survey in construction companies, design offices, studios, as well as managers themselves. The survey found out requirements that are now placed on managers in construction.
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Description of machine tool frames.
Míčka, Martin ; Matějka, Petr (referee) ; Blecha, Petr (advisor)
This work describes the machine tool frames via background research. There are basic requirements for the frames included in this work. It is focusing especially on static and dynamic rigidity. Thereinafter you can find in my work all the ways of making the frames and also the materials which are used during their production. Last but not least I am presenting some examples of constructions single parts of the frame and all the ways of their attachment to the ground.
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