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Combined Heat and Biogas Production Using Bioreactor
Brachetka, Jan ; Radil, Lukáš (referee) ; Baxant, Petr (advisor)
The bachelor's thesis deals with the use of anaerobic digestion in households to process biological waste and produce biogas. The goal of this work is to design a small-scale household anaerobic biodigester which, thanks to the possibility of continuous feeding with fresh material, will be capable of uninterrupted operation and biogas generation. The introduction defines the principle of aerobic digestion. The main part of the theoretical analysis is devoted to the description of anaerobic digestion and the factors that condition its formation. The basic properties and composition of biogas, as well as the types of household bioreactors, are also described here. Subsequently, the thesis focuses mainly on the design and construction of a household bioreactor, its commissioning, and evaluation of its energy balance.
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Fuel cell model in PSCAD
Černý, František ; Ptáček, Michal (referee) ; Radil, Lukáš (advisor)
The bachelor thesis deals with the creation of a model of different fuel cells. It is intended to broaden the view of currently available fuel cells their principle function and to describe their advantages and disadvantages. It also describes the basic equation of the magnitude of the voltage generated at the electrodes of the cell and the types of voltage losses that occur during its operation. Creating a custom fuel cell model and comparing simulations of this model with real cells and, with datasheets of available fuel cells.
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Technical-economic framework for the integration of individual and community electricity generating plants
Vaculík, Tomáš ; Radil, Lukáš (referee) ; Drápela, Jiří (advisor)
In conection with current energy situation, efforts to achieve energy self-sufficiency are increasing in the Czech Republic and the rest of the Europe. Renewable energy sources can already be used within households. However, not everyone has the opportunity to purchase and operate such a factory. The solution to these problems may bet he increasingly discussed community energy, which is becoming more popular in the Czech Republic in connection with changing legislation and financial motivation in the form of various grants and subsides. The purpose of this work is to create a summary of the most important information of the technical and economic framework and subsequent creation of an easily modifiable and parameterized model of energy communities, which will show the technical properties of individual connections, such as power losses or the influence of metrics on the resulting values of measured energy.
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Retail electricity price analysis
Chmelař, Šimon ; Zinecker, Marek (referee) ; Radil, Lukáš (advisor)
This thesis focuses on the analysis of electricity retail prices within the Czech Republic. In recent years, spot electricity prices have become a significant topic due to their high volatility, which was caused by market liberalization, geopolitical factors, and the gradual transition to sustainable energy sources. The aim of this work is to create a computational model for estimating the composition of various types of wholesale prices from the retail prices offered by electricity suppliers. The first part of the thesis summarizes the functioning of the wholesale electricity market, its components, and the types of electricity trading. The second part of the thesis focuses on compiling calculations using MATLAB software. By analyzing wholesale prices and prices offered by a certain supplier, it determines whether the supplier has secured at least the minimum part of the estimated consumption of its customers and is thus able to fulfill its obligations.
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Efficient solid fuel boiler control by PLC
Pirochta, Josef ; Radil, Lukáš (referee) ; Bátora, Branislav (advisor)
This thesis focuses on the efficient control of a solid fuel boiler using a programmable logic controller (PLC). The objective is to develop and optimize a control system that will enable safe, reliable and efficient operation of the boiler. The thesis includes a theoretical analysis of the safety requirements, a description of the parameters of the VERNER A251 boiler and the design of the regulation using PID controllers. The output is a complex software program designed in Mosaic environment, which simulates the boiler operation in multiple scenarios and allows its adjustment and analysis. The simulations have been designed to accurately represent the various boiler states from ignition to fault conditions, providing a comprehensive view of the entire control process.
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Off-shore wind power plants and their integration into the electricity market
Souček, Tomáš ; Vasil, Tomáš (referee) ; Radil, Lukáš (advisor)
Tato diplomová práce zkoumá integraci offshore nabídkových zón do evropského trhu s elektřinou, se zaměřením na ekonomické dopady omezení kapacity na pobřežní větrné farmy a roli Transmission Access Guarantee (TAG). Práce prozkoumává strategie integrace trhu a zdůrazňuje výzvy a řešení pro integraci pobřežních větrných farem za podmínek omezení kapacity. Klíčovým zjištěním je vliv kladných Power Transfer Distribution Factors (PTDFs) v nizozemských prvcích na kapacitu přenosu, jak klesají hodnoty Remaining Available Margin (RAM). Naopak zavedení českých prvků, i při vysokých PTDF, nemělo vliv na maximální Net Pozice. To naznačuje, že český provozovatel přenosové soustavy (PPS) nemusí mít obavy z finančních důsledků kompenzací souvisejících s offshore nabídkovými zónami, zatímco TSO blíže k těmto zónám musí být ostražitější. Studie zdůrazňuje význam přesného stanovení objemu a ceny TAG, aby se předešlo potenciálnímu zneužívání a zajistila se spravedlivá kompenzace. Zdůraznuje potřebu strategického řízení sítě, aby vyvážila stabilitu sítě s finančními riziky integrace obnovitelné energie. Tento výzkum poskytuje cenné poznatky pro tvůrce legislativy, provozovatele přenosových soustav a zainteresované strany v optimalizaci integrace zdrojů obnovitelné energie do evropské sítě, přispívajíc k udržitelnější a efektivnější energetické budoucnosti.
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Opportunities for flexibility in energy communities
Kubíčková, Klára ; Paar, Martin (referee) ; Radil, Lukáš (advisor)
The thesis presents a research of the legislative setting for energy communities in the Czech Republic, current conditions and expected developments in the provision and evaluation of flexibility. The thesis also deals with the proposed changes in the tariff structure and possible approaches to accounting for energy communities. Furthermore, the possibilities of flexibility involvement in energy communities, especially from the perspective of evaluation of flexibility provision are mentioned. Based on the current legislative setting and the potential of power stations, model communities are selected for which electricity sharing according to allocation keys and payback are evaluated.
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Household consumption diagram model
Bočan, Tomáš ; Brettschneider,, Zbyněk (referee) ; Radil, Lukáš (advisor)
The thesis deals with the creation of a model of the household consumption diagram. Firstly, the thesis outlines an analysis of current approaches to creating household consumption diagrams with their evaluation. The thesis then describes the input data, the procedure for creating the model itself, and in the last section, a simulation of household consumption is performed and an evaluation of the accuracy of its prediction, based on reference data.
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Integration of Grid-Forming and Grid-Following inverters into the grid
Sýkora, Jan ; Klusáček, Jan (referee) ; Radil, Lukáš (advisor)
The thesis deals with the integration of Grid-Forming and Grid-Following generation plants into the grid. The key parts of this thesis are the assessment of the current state and development of the resource base of the Czech Republic, a critical study of the limiting share of resources lacking natural inertia for maintaining stable and safe operation of the grid and the definition of the nature of inverter resources in "Grid-Forming" and "Grid-Following" modes. The main contribution of the work is the development of models of "Grid-Forming" and "Grid-Following" inverters in order to verify the capability of operation in grid-on mode and their response to disturbances in the system.
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Thermoelectric generators and their use with renewable energy sources
Bajgl, Tomáš ; Radil, Lukáš (referee) ; Baxant, Petr (advisor)
This work revolves around the principle of thermoenergy transforming into electrical energy by using a thermoelectrical generator. It is divided into these sections – theoretical, practical and experimental measurement. In the theoretical section, each thermoelectrical phenomenon is described, the properties of various materials used for production are listed, including their electrical properties and constructions. Then the attention switches to the currently available systems. The practical section includes a design for a device, which purpose is to recharge a mobile phone by using thermoelectric generators, and that section is followed by the elaboration of the measured values.
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