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Accumulation of Energy from Renewable Energy Sources
Heller, Ondřej ; Radil, Lukáš (referee) ; Mastný, Petr (advisor)
The objective of the first part of master’s thesis is mapping the potential of various types of renewable sources in Europe and Czech Republic, especially solar energy, wind energy, water energy and biomass. There are described principals and ways of energy generation from these sources, brief overview of current technologies, and also their advantages and limitations. An important part is electric supply continuity from renewable sources, there are large differences and the resulting to restrictions on construction and connecting the units to the power system. In this work there are mentioned some impacts on network and rates of change of supply, some sources are also evaluated in terms of maximum power, that can be connected to the power system in our country. The conclusion of the first part is dedicated to energy storage technologies, which are suitable and usable for renewable sources, there are described their principals, properties, status of development and types of aplications, in which these technologies are used. This chapter also focusses on the price level of each technology. The second part of the thesis deals with 1 MWp on-grid photovoltaic power plant design. This design includes also the redox flow batteries accumulation, the first variant calculates on 24-hour steady energy supply, the second optimalized variant calculates on daily energy supply. There are the accumulation system costs estimated and also the payback period for the both variants. Additionally there is also determined minimum penalization for cost-effective operation. The last part is dedicated to changes of impact on the local grid and changes of system impacts, after the accumulation system is installed.
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The assessment of advantages of construction of large hydroelectric power plants in the area of Cukrova bouda, district Sumperk
Knápek, Michal ; Kopřiva,, Miroslav (referee) ; Mastný, Petr (advisor)
The subject matter of the master´s thesis is, in particular, an evaluation of the advantageousness of the construction of a pumped-storage hydroelectric power station in the vicinity of Cukrová Bouda. In the master´s thesis introduction the utilisation of pumped-storage hydroelectric power stations in providing reserve power generation to the operator of a power transmission system is discussed. The thesis then focuses on a technical design solution where two alternatives are drawn up for which the nominal parameters of individual designs for a pumped-storage hydroelectric power station are specified. The following part deals with the impact of the structure and the plant’s subsequent operation on the environment. A further key part is the determination of investment and subsequent operating costs and an evaluation of the plant according to economic pointers. The final part of the master´s thesis contains a SWOT analysis and an assumed programme of works for the plant’s preparation and actual construction. The conclusion contains an overall evaluation.
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Power Plant Units Cooperation - Optimization of Operating Parameters
Hromádka, Martin ; Wasserbauer, Vojtěch (referee) ; Mastný, Petr (advisor)
This bachelor’s thesis aims to describe the principle of operation of thermal power plant as well as to describe the issues related to increasing the efficiency of production units. Another task was to create a mathematical model of cooperation of power plant units. The thesis also deals with the fundamental issues of power distribution as well as deals with the functioning of the electricity system in Czech republic. In this thesis there are also calculated two sample examples of two parallel cooperated units. In the first example, the optimized electric power is not outside of the control range but in the second, the optimized electric power is outside of the range. So there are two types of the calculations. As a part of the thesis there was made a mathematical model. The mathematical model based on the specified demand load in the network optimizes the eclectic power of three cooperating parallel units. This should lead to the fact that the operating costs will be minimized. In the model there is also a complete calculation of specific consumption and thermal efficiency. The reader of the thesis is able to do these calculations in five possible options.
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Operational Diagnostics of PV plant -T14 - Operation Optimizing
Kroutil, Roman ; Vrána, Michal (referee) ; Vavera, Miroslav (referee) ; Mastný, Petr (advisor)
The aim of the Thesis is theoretical clarification of the issues of photovoltaic power plants, their diagnostics, inspection and performance measurement, including negative impacts on their operation and subsequent application of theoretical knowledge during practical inspection and diagnostics of PV power plants. In its introductory part, the Thesis deals with design, manufacturing and development of PV cells and panels and describes other necessary elements and components, including their use in individual types of photovoltaic systems. Another part describes electric parameters of PV cells and panels, especially the parameters that can be found out by measurement of V-A characteristics and also the parameters affecting the shape of the V-A characteristics. The third part is focused on failures of photovoltaic systems, which include various defects of photovoltaic cells and panels, it also provides for adverse factors affecting operation of the entire system, associated not only with weather influences but also with the actual design of the photovoltaic system. The fourth part deals with possibilities of increasing the cost-effectiveness of electricity generation by PV power plants on the basis of practical experience of their operators. The subsequent part determines, on the basis of technical standards, procedures for PV power plant inspections, the procedures for measurement and diagnostics of PV power plants and also other prerequisites connected with inspections and measurements. This part includes also a description of requirements for measuring devices, most frequent measurement errors, adverse impacts affecting measurements and methods of assessment of the data measured. The last part of the Thesis is practical. At first it deals with verification of the impact of defects of PV modules on the shape of their V-A characteristics, then with execution of inspections and diagnostics of a particular PV power plant, evaluation of the data identified and measured, as well as with a proposal of optimisation measures to increase cost-efficiency of the operation of that particular PV power plant.
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Electrical system for family house with heat pump
Adámek, Ondřej ; Bátora, Branislav (referee) ; Mastný, Petr (advisor)
The aim of my submitted thesis in the first part was to clarify principle, technology and possibilities of using of heat pumps as heat sources in family houses. This issue was discussed in Chapter 3 where we described the principle of functions of heat pump technology and their application in practice. At the end of this chapter, we explained the principle of heat pump connection to the mains. In the next part, we examined the legislation on electrical installations in residential buildings, and we described the basic concepts and defined the type fields. The subject of the practical part of this work was to create design documentation for construction management, which we drew up in a bungalow with heating by heat pump and heat loss 9kW. In the second part, we assessed the economic operation of the heat pump in this house.
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Optimization of operating heating and power plant units in the PS
Bezděk, Jakub ; Radil, Lukáš (referee) ; Mastný, Petr (advisor)
This thesis deals with the structure of the electricity transmission system in Europe and their cooperation. Furthermore, it also analyzes the basic types of power plants and heating plants, then describes the optimization of operation of the electricity transmission system, the system services, support services and providing cross-border provision of electricity. Finally, work is the definition of regulatory tools and the example shows the optimal power distribution of two specific blocks for a given load.
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System Proposal for the Use of Low-potential Heat
Kučera, Roman ; Bartoň, Jan (referee) ; Mastný, Petr (advisor)
This bachelor thesis deals with the problematics of a low-potential heat from the energetics point of view. It also deals with the sources and subsequent use of the low-potential heat. First of all, the thesis mentions the origin of these sources and also describes where they can be found. Also the technologies, that are able to utilize this heat, like heat pumps and solar collectors, are mentioned in this part of the thesis. In its next part, the bachelor thesis deals with use of the waste heat for heating and production of electrical energy. In the last part, the thesis presents the project that introduces a specific concept of the system for object heating from the waste heat.
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Dispersed production and its influence on distribution network
Kácl, František ; Vybíralík, František (referee) ; Mastný, Petr (advisor)
The diploma thesis deals with dispersed generation (production). The small electric power sources are connected into distribution networks. Types and principles of the small electric power sources are studied. The legislation framework concerning renewable energy sources utilization is described. These power plants have impact into distribution networks and therefore techniques for the source connection to distribution network are included in the thesis. The impact of the specific small source of electricity must be studied.
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LOCA Energy Performance Study for Simulation of Heavy Accident at NPP
Zemčíková, Kristína ; Andrle,, Karel (referee) ; Mastný, Petr (advisor)
This bachelor’s thesis studies the energy performance of the LOCA device used for the simulation of accidents at nuclear power plants, which can be found at the CV Řež research centre. LOCA stands for Loss of Coolant Accident, which is kind of serious accident that may occur at NPPs. During the accident, the coolant is assumed to be leaking due to a fissure in one of the main pipes. The unique LOCA device at the research centre simulates this accident and is used for testing important components utilised at nuclear power plants. This thesis describes the LOCA device and attempts to determine its energy consumption over the course of a 10-day experiment. By leveraging the consumption curve of the research centre, possible operational optimisations applicable to this LOCA device technology will be proposed.
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Calculation of the network steady state on the voltage level 110 kV
Macháč, Petr ; Vaculík, Petr (referee) ; Mastný, Petr (advisor)
This thesis deals with load flow calculation of electrical network 110 kV before and after the connection to the 70MW gas supply and the 58MW steam and gas supply. This grid can be powered from two 400/110kV substations, namely Sokolnice and Otrokovice. The load flow calculation is realized for the power supply either from Otrokovice or Sokolnice. Furthermore, the calculation of the uni-phase and three phase short circuits in the substations of 110kV network is realized in this thesis. The result of the thesis is the assessment of the voltage ratio in the network, current load of the power line and short circuit resistance of the substations.
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