|
|
Power line parameters
Kavan, Pavel ; Krajsa, Ondřej (referee) ; Mlýnek, Petr (advisor)
At the beginning is diploma thesis focused on a distribute power line parameters measurement and examination changes of this parameters depending on using of various power line cables. On the basis of measurements is made a transmission channel in Matlab & Simulink, where are executed simulations with power transmission line. The simulated power line is based on measured distribute parameters or physical proportions of cabels. By changing different parts of simulated communication channel is a symbol error rate expressed on the lenght of transmission line.
|
|
|
Proposal of the reconstruction of the distribution network in a specific area
Novák, Vojtěch ; Mrvová, Dana (referee) ; Blažek, Vladimír (advisor)
This diploma thesis is concerned with reconstruction of distribution network in Hruba Vrbka. The diploma thesis is divided in two parts. For better understanding to this issue, the first theoretical part is shortly dedicated to the history of electrical power system, to the several types of distribution network of low voltage and high voltage and their utilization in the area, considering the reliability and the quality of delivery of the electric energy. In this thesis there is mentioned division of distribution grids according to placing of cable lines, according to voltage and according to type of grid connection. Next part of this work is dedicated to the description of overhead lines and cable lines and their characteristics. For the proper concept of the grid we should know some characteristics of the electric line’s proposal: mechanical strength, warming, voltage drop, efficiency, degree of safety and provision of delivery. In the end of the theoretical part there are described methods for calculation of grid’s steady state as a linear task and also non-linear task, elimination of the balancing node, the iterative method, the reduction of external power take-off nodes and the solution of the steady state of the network through the direct current model. The second part of the diploma thesis is concerned with the calculation of the steady state in the village Hruba Vrbka. In this part is also described the KASI program which was used for the calculation of the grid’s steady state. Firstly low voltage grid’s balance in Hruba Vrbka was found out and evaluated and then there were proposed some solutions of the reconstruction for the grid improving. The suggested options of the reconstruction are considered from technical and economical point of view and the best solution is chosen. For this solution there is suggested the protection through program SICHR 9. In the end of this diploma thesis there is checked the load of the high voltage line.
|
|
|
Project of Outgoing Transformer Unit for the Photovoltaic Power Station
Hanák, Miroslav ; Procházka, Aleš (referee) ; Orságová, Jaroslava (advisor)
This master’s thesis engages in project of outgoing transformer unit for the photovoltaic power station. It describes project and its design documentation what conducts to practising of construction. It has compared investing to more expansive transformer what has lower loss. It describes charges of operation’s transformer in twenty years. It leads project of cable low voltage. It compares whether is better to use aluminium or cupric cables. Project is led with respect for investment costs and minimum of operation loss.
|
|
|
Model for the Cable Thermal Characteristic Calculation
Starý, Zdeněk ; Drápela, Jiří (referee) ; Orságová, Jaroslava (advisor)
The result of this assignment is the Model for the Cable Thermal Characteristic Calculation. Firstly, there is a prepared overview that is focused on the essential ideas of cable technology. The following part describes the simple possibilities of passaging the heat. Secondly,the physical essence of warming cables as well as the possibility to discover the methods how to calculate the warming cables are also mentioned in this task.There is an opportunity to find the methods for calculating the warming cables as well. The model was verificationed in the conclusion of my assignment. The measurement was done and the empirical results were compared with the results that were achieved by modeling.
|
|
|
Passenger lifts
Galásek, Martin ; Pokorný, Přemysl (referee) ; Škopán, Miroslav (advisor)
Bachelor thesis "Elevators for transportation of persons" is an overview of applied design solutions of the elevator engines, especially in terms of their efficiency, space and economy utilization in various types of buildings. The final part contains a summary of expected trends of elevators’ development with respect to new design elements, automation improvement, modernization and higher requests on safety during a conveyance of persons.
|
|
|
Crane Hook Block - Lifting Capacity 16 tons
Straka, Miroslav ; Malášek, Jiří (referee) ; Škopán, Miroslav (advisor)
The aim of this thesis is the design of crane hook block with a capacity of 16 tons. Pulley block used for lifting and moving loads in a medium heavy-duty use. It is equipped with a simple hook. The work, therefore, the proposal contains solutions rope transfer, strength and dimensional calculations of components and assembly drawings, axes, pulleys and nut hook.
|
|
|
Analysis of reinforced concrete bridge in Velké Meziříčí
Necid, Miloš ; Koláček, Jan (referee) ; Zich, Miloš (advisor)
I deal with the road bridge in Velké Meziříčí in the thesis. The bridge is a reinforced concrete structure with one field, with two main beams above the ground level. In the first phase I assess existing state of the ultimate limit state. I do calculation of internal forces both manually and in Scia Engineer. Furthermore, I propose two possible solutions of measures for the main beams to increase the carrying capacity and improving sight conditions on the bridge. In both variants I prestress the main beams with prestressing reinforcement. In the last option I propose a new bridge supporting structure, which is an additional prestressed slab.
|
|
|
Nonlinear Response of Steel Structures on Statical Loading
Nezbedová, Anna ; Vlk, Zbyněk (referee) ; Kala, Zdeněk (advisor)
This paper deals with the nonlinear response of steel structures to static loads. There are formulas derived for nonlinear analysis compressed, bended and tension members. By compressed elements, there is described the issue of buckling, by the bended, it is lateral-torsional buckling and tension elements are cables. As an example there is an calculation of a suspension two spans pedestrian steel bridge under load action of asymetrical loads. As another possible calculation process, the finite elements method is described.
|
|
|
The issue of fault location on cables
VOKÁLEK, Petr
This work is focused on the locating of faults of the cables laid in the ground. Firstly it describes particular types of cables and their basic physical characteristics. Following part deals with widely used methods for locating cable faults including their comparison. Than it describes DC measurements which are used to identify the type of fault. In the practical part there is a complete DC measurement on the specific cable and finding out the limits of usefulness regarding to the chosen methods for locating the failures.
|
|
|
Design of computer network training room
KRHÁNEK, Jiří
This project describe design of computer classroom for learning computer networking. At first I explain how create computer network. I decide about hardware and network items to use for realization fully functional computer network. Below I describe network setting in Operating Systems. At the end I fixate to solution particular cases which could be resolved by students in this computer classroom.
|
guest ::
