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Preparation of training materials for high voltage switchgears
Nosek, Jan ; Kozel, Tomáš (referee) ; Lázničková, Ilona (advisor)
This Bachelor thesis documents the creation of training materials for high voltage switchgear. Most of the work is devoted to introduction of products of ABB company, which the training materials are developed for. The main emphasis was on introduction of the UniGear ZS1 switchgear, which the main product of ABB's high voltage switchgear domain is. The last chapter is devoted to the analysis of the different levels of training materials.
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Network Infrastructure Design for Family House
Svoboda, Milan ; Jordán, Vilém (referee) ; Ondrák, Viktor (advisor)
This thesis deals with the network infrastructure design for family house. The default aspects for the design of network infrastructure are house plans and requirements of the client. The work presents the theoretical knowledge necessary for further analysis of client requirements and design optimal solution. Part of the work are cabling plans, location of active elements and cost calculations to build the network infrastructure.
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Dedicated machine for forming of jerrican spouts
Podolan, Luděk ; Ing.Pavel Cícha, Evropský polytechnický institut, Kunovice (referee) ; Novák, Vítězslav (advisor)
The aim of this diploma thesis is detail description of theory, design process and final realization of single-purpose machine for pressing canister funnels. Theoretical section of this work covers manufacturing standards of the electrical cabinets, options for the single-purpose machine control with focus on the programmable logic controller e.g. PLC, PLC control program concept with definition of the main alarm states and description of two types of electrical cabinet. Practical part contains description of the electrical cabinet, its block diagram, photo documentation of the wiring (chapter 4.), chosen PLC type, its advantages and detail program description using Ladder diagram notation, communication with operator realized with touch LCD panel, programming environment for this LCD panel and program realization process. Finalized machine description and its photo documentation in manufacturing process is covered in the end. This diploma thesis is based and extends previously successfully defended semester project.
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Analysis of Mechanical Stress during Short Circuit in an Air-Insulated MV Switchgear
Bártů, Jan ; Bajánek, Tomáš (referee) ; Orságová, Jaroslava (advisor)
This Master thesis is based on problems of force effects of the magnetic field of short-circuit current. Firstly, I analysed the force action of the three phase busbars during the three-pole short circuit. The analysis was performed in the Ansys Maxwell program and I verified the correctness of the analysis by numerical calculation. The second practical part was executed for ABB company. The main task was to analyse the force effects of the short-circuit current in the HV switchgear with focusing on the arms and contact system of the circuit breaker. The simulations of the following configurations were performed in more details: three configurations of the simplified VD4 circuit breaker, two types of VD4 circuit-breaker contact systems and a linear circuit breaker configuration model. The objective was to calculate the forces acting on the current path of the arms and contact system of the VD4 circuit breaker during the three-phase short-circuit and to simulate the effects of forces on these current parts. For modelling of individual assemblies, calculations and simulations I used: SolidWorks 2014, Ansys Maxwell 16.0 and Ansys Workbench 14.5 programs. With SolidWorks 2014 3D CAD software were modelled simplified assemblies of circuit breakers and contact systems. These systems were imported into the Ansys Maxwell software, where the force effects of the magnetic field of the short-circuit current were calculated. In Ansys Workbench programme was simulated the effect of forces on the current circuit breakers. Moreover, the final deformations of the materials (with respect to the mechanical properties of the structure) were plotted. The analysis of force effects of the magnetic field was performed for the specified static short - circuit current value.
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Design of a Communication Infrastructure for Company JOSA-KOVO s.r.o.
Salaj, Tomáš ; Šimeček, Jiří (referee) ; Ondrák, Viktor (advisor)
The subject of bachelor thesis is the design of a communication infrastructure for company JOSA – KOVO s.r.o. The design includes cabling, device necessary for running the data network and servers. In the first part, there is theoretical knowledge and solutions for the communication infrastructure, its model and application . The second part is practical and discusses the design of new communication infrastructure and the most appropriate way of its implementation considering the economical costs of these solutions.
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Proposal of electrical equipment for soaking and drying cores for making castings
Čermák, Jiří ; Hájek, Vítězslav (referee) ; Veselka, František (advisor)
This diploma thesis deals with proposal of electrical equipment for soaking and drying cores for making castings at foundry in a Great Britain. It brings look at system of technical norms ČSN and it compares it with british system of technical norms British standards. The second part of this thesis contains detailed proposal of this equipment, including specification of control system, specification of power supply cables and control cables and particular technological units. The whole project documentation is enclosed as an inseparable attachment of this diploma thesis.
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A multi-source power station switch- and control-boards digitization project
Fiala, Martin ; Bátora, Branislav (referee) ; Drápela, Jiří (advisor)
This bachelor´s thesis deals with comprehensive proposal and reconstruction of switchgears for source power station on Department of Electrical Power Engineering with controlled rotating and static power sources, that can be managed remotely using a programmable logic controller via the communication link. Part work also description of the control system and all the necessary parts for reconstruction. At last this thesis deals with the problem, which is linked to the deployment of automation in general, including the negative aspects, describes the problem of industrial communication systems along with the most used fieldbus that is used in the implementation of automated solutions.
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The Project of Computer Network
Havlík, Kamil ; Šedivý, Karel (referee) ; Ondrák, Viktor (advisor)
This project aims to create a complete proposal for a computer network for Autodružstvo Znojmo. Proposed solutions must take into account the current technical and safety trends that are valid under the relevant norms and standards for the type of Gigabit Ethernet network. The work will also described the use and characteristics of individual sub-components, which are for the operation of the entire network is necessary.
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Analysis of effects of short-circuit current in switchgear cabinet
Prokop, Jan ; Bušov, Bohuslav (referee) ; Valenta, Jiří (advisor)
The work is focusing on dynamic effects of short-circuit currents, more precisely dynamic effects of short-circuit currents on switchgear cabinet (terminal box). The work was designated to a concrete construction type of two switchgear cabinets located on rotating machines via company Siemens Electric Machines Drásov s.r.o.. The switchgear cabinets are designed for non-explosive environment where the air is used as an insulating medium. The task was to determine how the device will behave during the three-phase short-circuit and three-phase short-circuit with earth/ground connection. The following programs were used for the calculations and simulations: Ansoft Maxwell 16.0, Ansoft Maxwell 2015 and ANSYS Workbench 16.0. By using these programs the effects of forces which acts on current paths in cabinet caused by the passage of short-circuit current were simulated, statically and also dynamically. Further the effects of pressure acting on cabinet frame during the arc short-circuit have been statically and dynamically simulated. All the results are summarized in the conclusion. Conclusion also contains the final evaluation of the functionality of both switchgear cabinets.
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