National Repository of Grey Literature 256 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Photovoltaic system project for the Holešov commercial building
Pospíšek, Timotej ; Vrtal, Matěj (referee) ; Mastný, Petr (advisor)
This bachelor’s thesis focuses on the design and implementation of a photovoltaic system (PVS) for a commercial building in Holešov. The main objective was to develop a comprehensive project for a category A2 photovoltaic power plant that meets the requirements of the distribution network operator and maximizes the use of energy produced on-site. The work is divided into three main parts: familiarization with the rules for connecting and operating sources with inverters according to PPDS and RfG, design of the photovoltaic system including storage device, and preparation of project documentation for building permits. The results indicate that the proposed system is economically advantageous and contributes to environmentally clean energy supply. The economic analysis of the project, which includes available subsidies, confirms an investment return within 8 years.
Photovoltaic system in cooperation with a charging station for electric vehicles
Zerzán, Jan ; Morávek, Jan (referee) ; Mastný, Petr (advisor)
The thesis deals with the design of photovoltaic power plant with accumulation and charging station for an electric car for a family house located in the Pardubice region. First, the individual parts of photovoltaic system are theoretically described and then the requiments for connection to distribution system are described. At the end of the theoretical part, the subsidy program is described. The practical part consists of the design of the photovoltaic system and subsequently it’s project documentation. Another topic in the thesis is the simulation and control of the energy flows of the designed PV plant with batteries and EV charger in Matlab. Towards the end of the thesis an economic balance sheet is created.
Project documentation of photovoltaic power plant category B1
Rehák, Jan ; Mastný, Petr (referee) ; Morávek, Jan (advisor)
This thesis focuses on project documentation for a photovoltaic power plant. Requirements for parallel connection of power plants with installed power from 100 kW to 1 MW to the distribution grid are studied. Next, research has been conducted on individual components and options for local and dispatch control of photovoltaic power plants. The practical part of the thesis focuses on the creation of project documentation for an embedded photovoltaic power plant located in the buildings of FEKT Brno University of Technology. The final part of the thesis includes an economic evaluation of the project.
Analysis and Verification of Operating Characteristics of Grid and Hybrid Inverters
Vrána, Michal ; Braciník,, Peter (referee) ; Dvorský, Emil (referee) ; Mastný, Petr (advisor)
The thesis is an annotated collection of articles focused on the field of verification of inverter operating characteristics and their impact on the operation of the distribution system. The operating characteristics are assessed with respect to the national requirements in the Czech Republic. Within the framework of the solution, articles were published in foreign impacted and peer-reviewed journals and indexed proceedings of foreign and domestic conferences. The main result of the dissertation is the design and implementation of a laboratory workplace for verification of operating characteristics. For the workstation, software equipment was designed and implemented for testing process automation of both, the physical workstation and the virtual testing. By reconfiguring the workstation, it is possible to create a facility for simulating and verifying the effect of autonomous functions on the distribution system within the framework of experimental installation in laboratory conditions or field testing.
Visualization and online control of important parameters of block and tap-changing transformers at the Dukovany nuclear power plant
Holeš, David ; Mareček, Oto (referee) ; Mastný, Petr (advisor)
The thesis focuses on a design of visualization and setting limits of important parametres of power and own-consumption transformers at the nuclear power plant Dukovany. In the first part there is a description of a present technical state of oil power transformers at this power plant, including a description of a currently installed transformers monitoring system and electro monitoring system. The second part deals with a design of a visialization of parametrs and a diagram design of active-access displays of monitored parametrs of these transformers. In the thesis there is also a description of web interface with a new visualization. The last part of the thesis contains a design of setting the limits and criteria of important monitoring parametres of these transformers.
Wind Turbine Model for Research and Laboratory Applications
Števček, Tomáš ; Ptáček, Michal (referee) ; Mastný, Petr (advisor)
A major portion of this thesis is devoted to the Whisper 200 wind turbine model in Matlab-Simulink environment. The turbine is installed at the Department of Electrical Power Engineering, FEEC BUT. In the model, several types of simulations can be executed. On that basis, the power curve and mathematical relationships between wind speed and other physical quantities, such as RPM, electic current, and voltage, were obtained. Comparisons of the simulations' results with measurement data illustrate adequate agreement, but limitations of the model remain significant, as is exhaustively documented and commented upon in the thesis. As a partial advancement towards elimination of the model's deficiencies, conditions for substantial performance improvements of the dynamic simulation have been elaborately derived.
Use of Photovoltaic Power Plant with Batteries for Warehouse and Office Spaces
Kořenek, Jan ; Vojtek, Martin (referee) ; Mastný, Petr (advisor)
This diploma thesis deals with the photovoltaic power plant in Zlín. Power plant is used for electricity supply of office building and stock. For better self-sufficiency there is designed battery system as storage for electrical energy which the object can not consume itself. In the theoretical part there are described development of photovoltaics and components used in power plants. Further there was described the building, construction of photovoltaic power plant and eventually also a subsidy program by which the project was financially supported. Main task in the practical part was to develop scripts in Matlab for evaluation of online measured data. Next point was an energetic evaluation of power plant operation. In the end there was calculated power plant return with subsidy support and without support. These calculations were done in PV SOL software. Eventually, there was evaluated how the system works and how the power generated by the photovoltaic power plant is used. In conclusion, there is summary of the measurements and calculations.
Simulation of Heat Pump Performance
Lahvička, Juraj ; Pěcha, Jiří (referee) ; Mastný, Petr (advisor)
This work is aimed to design and implement software for simulating operational properties of heat pumps and process data from measurements. Work contains the issue of heat pumps, their principle of functionality, different types of systems and coefficients used for rating of efficiency of heat pumps. Next it contains physical or electrical parameters that needs to be measured by designed system. The result is functional software, which contains mathematical library written in C++ and graphical user interface written in C#.
Measuring and Control System for Heat Pump
Ščepka, Ondrej ; Morávek, Jan (referee) ; Mastný, Petr (advisor)
This master thesis describes the issue of the measuring and control system for the heat pump. In the first part of the thesis is described the principle of heat pump activity, its basic components. The second part contains the distribution of heat pumps according to the method of obtaining and transferring the heat. The following chapter contains the description of system status before the modernization. In the practical part of this thesis is the proposal and realization of new control and monitoring system including the description of individual components. In the conclusion of the thesis is a verification of the use of proposed control and monitoring system of heat pump for the measuring of its operational characteristics.
Use of Waste Water in Nuclear Power Dukovany for Heating
Bohůn, Vojtěch ; Bartošík, Tomáš (referee) ; Mastný, Petr (advisor)
This diploma thesis deals with various ways of energetically advantageous utilization of waste heat produced by industrial technologies. The focus of the diploma thesis is both to provide an overview of different ways and places of origin of waste heat in industrial technologies and of its possible reutilization, to suggest a concrete air heating system using waste heat and to propose a long-distance hot water pipe which supplies hot water pipe system with energy. First, technologies producing waste heat and some ways of regressing of heat in such technologies are theoretically described. Second, the equipment for transferring of heat and for adjustment of thermal energy parameters is described. A special focus is put on water supplies of the Nuclear Power Plant Dukovany and some selected parts of its secondary circuit, which is waste heat collected from. The analysis is supplemented by a calculation of theoretical quantity of waste heat. The aim of the calculation is to determine whether waste heat can be a source of energy for heating. Then, a current system of heating of three selected buildings in the area of the Nuclear Power Plant Dukovany is briefly described. Based on the gained knowledge, a project of air heating with two heat pumps type water – water, a heat receiver preparing warm service water and three recuperative units for preheating of fresh heating air is designed. The selection of main parts of the air heating is amended by a calculation of purchase costs and electric energy consumption. After that, the focus is placed on choice of type of hot water pipe – its trace is stated and an indicative estimation and a thermal-conditions calculation in the hot water pipe are made. The preliminary calculation serves as a source of information for a final project of air heating and calculation of changes of temperatures longwise the hot water pipe. The project contains also a calculation of pressure losses and an analysis of economical questions concerning hot water pipes. In conclusion, the results of project of air heating and hot water pipes are summarized.

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