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Mobilní fotovoltaická elektrárna / Mobile photovoltaic power plantKlíč, Tomáš January 2018 (has links)
This diploma thesis is divided into two parts, namely the theoretical and practical part. In the theoretical part, the issue is dismantled from the current state of electric power, share the production of individual sources, the market for photovoltaic and mobile photovoltaic systems through the description of the theory of solar radiation and all the necessary components to build the isolated photovoltaic power plant. The practical part deals with dimensioning, selection of suitable components and the actual one own design and implementation of a mobile photovoltaic power plant.
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Akumulace elektrické energie pro zdroj s nestabilní produkcí / Accumulation of electricity for a source with unstable productionPetrenec, Jan January 2020 (has links)
This diploma thesis deals with possibilities of accumulation of electricity generated by renewable sources with unstable production. Several goals were set by an assignment of this thesis. Within a research, current trends of the accumulation are presented in detail on examples of specific representatives with their technical parameters and economic possibilities. Further, an unstable source of electricity – the wind farm of three power plants Multibrid 5000 with all its parameters and operational details is defined for purposes of individual designs of accumulation systems. Firstly, the detailed design of an advanced compressed air energy storage (A-CAES) is realized. It includes a thermodynamic calculation of chosen components, their partial technical solutions, a financial evaluation of investment and a determination of theoretical payback period. Furthermore, the design for accumulators Tesla Powerpack is realized. It contains a calculation of individual system parameters, a financial evaluation of investment and a determination of theoretical payback period. Last part of the thesis is dedicated to a comparison and an evaluation of the achieved results of both realized methods of the electricity accumulation. In the end, A-CAES is chosen as more perspective variation.
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Předpokládaná opatření v sítí VN pro naplnění závěrů NAP SG v oblasti OZE a elektromobility / Proposal of measures in the high voltage network for the implementation of renewable sources and electromobility according to scenarios NAP SGNavrátil, Stanislav January 2021 (has links)
This thesis is focused on demonstrating the impact of the implementation of decentralized distributed energy sources (mainly RES) and electromobility technologies to electrical parameters in Czech medium voltage distribution network. Thesis is divided into two main chapters. First one is a brief theoretical summary of this problematic and the second one is a practical software simulation on a real medium voltage network. Proposed implementation scenarios are based on EU and national strategic plans for time period from 2020 to 2040.
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Návrh vytápění a větrání pro rekonstruovaný rodinný dům / Heating and ventilation in a renovated family homeNejerál, Michal January 2021 (has links)
The main goal of the diploma thesis is to design a new ventilation and heating system in an old house after its reconstruction. The design also includes consideration of the possibility of using renewable resources. A central heat recovery ventilation systém is designed to ensure ventilation of the building. The heating design is based on two independent heat sources. It is a wood boiler and a gas condensing boiler. After considering renewable sources, a photovoltaic system is designed. The results of individual calculations and drawing documentation of designs are also attached.
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Návrh podnikatelského záměru: Fotovoltaická elektrárna / Business Plan Proposal: Photovoltaic Power PlantKrutský, Jan January 2009 (has links)
This Master’s thesis´ topic is “Business Plan Proposal: Photovoltaic Power Plant” and it has been assigned at Brno University of Technology, Faculty of Business and Management. The target is to create business plan proposal based on real business case that would be actually used not only as summary of all the necessary information for the project owner but also as information source for potential investors and other stakeholders of the project. Except the above mentioned, thesis demonstrates the knowledge of the energetic sector’s environment, ability to implement the legislation, use particular managerial tools and to prepare the technical and economical valuation to make decision making easier and to catch the investors´ eyes. The project concerns construction and operation of the photovoltaic power plant in the Czech Republic.
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ORC oběh pro využití tepla KJ / ORC cycle for waste heat utilizingVítek, Stanislav January 2013 (has links)
The aim of this diploma work is the study and the modeling of an Organic Rankine Cycle (ORC). Organic Rankine Cycle is used for heat recovery from low-potential heat sources. Their working fluid is a refrigerant or a hydrocarbon whose properties are adapted to the conditions in which the heat recovery is performed. The other chapters include the technical resolution of exhaust-heat exchanger of cogeneration unit for application ORC and partially economic study use in Czech Republic.
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Malé a mikro fotovoltaické systémy / Microphotovoltaic systemsNováček, Richard January 2016 (has links)
Master thesis deals with photovoltaic components and their principles. Evaluate the types of photovoltaic systems and their impact on the transmission system. The thesis deals with financial support to small and micro-photovoltaic systems, which can be used in terms of legislation of the Czech Republic. There are also described the changes in the amendment to the energy act and effect on the price of electricity in households. Compared with the domestic photovoltaic rest of the world and the view of the German energy concept. Part of the theoretical design of a hybrid photovoltaic plant, including the use of heat pump. Thesis deals with using hybrid photovoltaic plant and economic viability of the proposed system. The last part deals with the implementation of the proposed system and assesses the true value from those anticipated in the design.
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Analysis of Off-grid Energy Systems for Small Villages at Three Different LocationsTHOMAS, HARDY, Varkey Alex, Dimal January 2022 (has links)
The development of new communities to facilitate the growing population isan ongoing trend, with locations outside the city limits so as to have morearea and less pollution. The main need in isolated communities is to secureenergy demand, which is normally done with power supply from the maingrid, which will require new transmission lines and transformer installation,among other things. As we strive for net-zero energy buildings, the energysource should be renewable and clean. So far, the most common andefficient renewable sources available in abundance are solar and windpower. So, based on the location, we investigate how we can make thesystem of combined solar, and wind power a successful energy source sothat the load of the community can be fulfilled while at the same time thepower from the main grid is isolated. This analysis is done for off-gridsystems to analyze a combined Solar and Wind energy production andcalculate the needed storage, also presenting a comparison with Dieselbased generation and an Economical perspective,for the different locations.As an output of this analysis a program has been developed to examineother locations on bases of local load data.
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Energy audit of a single-family house in a city in the middle of SwedenGarcía Gimeno, Daniela Valentina January 2023 (has links)
The world is currently submerged in two big problems: supply energy crisis and climate change. It is clear that society has to do its best to overcome these challenges, and one effective way to mitigate their effects is by conducting an energy audit, which helps to identify the weaknesses and strengths of the buildings, enabling improvements in their thermal efficiency. The main goal of this study was to carry out an energy audit on a century-old single- family house located in a city in the middle of Sweden. To achieve this, relevant data of the building was gathered such as the bills and some temperature and dimension measurements. Subsequently, the calculations of the energy losses and gains were done manually. From this step it was observed that almost 70 % of the thermal losses occurred due to transmission through the walls, windows and roof. To reduce these losses, potential energy-saving measures were studied, such as replacing the 2-panel windows with 3-panel windows and adding 200 mm of mineral wool to the roof. Both improvements reduced transmission losses around 700 kWh/year and diminished CO2 emissions around 20 kg/year, which implied a decrease of 1262 and 1277 SEK per year for each measure respectively. However, the profitability of these measures was difficult to attain because the required initial capitals are probably higher than the investments allowed, which are around 17371 and 17579 SEK for each measure respectively. Moreover, a study about installing photovoltaic solar cells was conducted and it resulted in a significant positive impact in the energy usage of the house. In particular, this improvement lead to a reduction of 2471 kWh per year, which equaled to an annual decrease of 6036 SEK. These annual savings implied an investment allowed of 58620 SEK. Furthermore, a decrease of 99 kg of CO2 emissions per year was obtained. In conclusion, this measure yielded substantial profitability, making it the most recommended option for future energy-saving improvements. Finally, changing in the occupant’s behavior by reducing the indoor temperature had a positive impact on the house without the need for an initial investment. Specifically, it decreased around 105 kWh per year.
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[pt] AVALIAÇÃO DA CONFIABILIDADE DE SISTEMAS DE DISTRIBUIÇÃO COM INSERÇÃO DE GERAÇÃO DISTRIBUÍDA VIA TÉCNICAS DE SIMULAÇÃO DE MONTE CARLO / [en] RELIABILITY ASSESSMENT OF DISTRIBUTION SYSTEMS WITH INSERTION OF DISTRIBUTED GENERATION VIA MONTE CARLO SIMULATION TECHNIQUESISABELA OLIVEIRA GUIMARAES 21 May 2024 (has links)
[pt] Fontes renováveis são importantes recursos a serem agregados aos sistemas
de energia elétrica em prol da descentralização da geração. Discussões acerca dos
efeitos ambientais direcionam os estudos em busca de alternativas que possibilitem minimizar a emissão de gases poluentes e diversifiquem a matriz elétrica.
Nesse contexto, a geração distribuída (GD) de natureza renovável vem se mostrando cada vez mais presente, alterando a estrutura clássica do sistema e conferindo um maior protagonismo do consumidor. Assim, torna-se essencial avaliar o
desempenho dessas novas redes de distribuição no atendimento à demanda, de
modo a estabelecer padrões adequados e monitorá-los através das agências reguladoras. Há uma diversidade de métodos de avaliação do desempenho dessas redes, principalmente através dos conceitos de confiabilidade, para lidar com as
falhas de equipamentos e os efeitos decorrentes. A presente tese tem como objetivo avaliar índices de confiabilidade de sistemas de distribuição na presença de
GD. Para isso, são apresentadas três técnicas baseadas em simulação Monte Carlo
(SMC). Uma clássica, denominada SMC sequencial, tem como objetivo modelar a
natureza cronológica do problema bem como as incertezas provenientes da intermitência de fontes de GD. A segunda, baseada na SMC quase sequencial, caracteriza-se por sua simplicidade e capacidade em manter a flexibilidade da SMC sequencial, porém, com melhor desempenho em termos de precisão e tempo de processamento. Por último, uma SMC baseada nos conceitos de transição de estado
do sistema de forma cronológica assegura também precisão e flexibilidade à técnica. Novas funções teste são propostas para alcançar tal objetivo. Dois sistemas
com inserção de GD são utilizados para avaliar o desempenho dos conceitos e
técnicas propostas: IEEE RBTS, rede acadêmica padrão amplamente utilizada na
área de confiabilidade; e uma rede real. A discussão exaustiva dos resultados confirma que as propostas cumprem os objetivos estabelecidos. / [en] Renewable sources are important resources to be added to electrical energy
systems in favor of decentralized generation. Discussions about environmental
effects drive the studies in search of alternatives that make it possible to minimize
the emission of polluting gases and diversify the electrical matrix. In this context,
distributed generation (DG) of a renewable nature has been increasingly present,
changing the classic structure of the system and giving greater engagement to the
consumer. Therefore, it is essential to evaluate the performance of these new distribution grids in meeting the power demand, in order to establish appropriate
standards and monitor them through the regulatory agencies. There is a diversity
of methods for evaluating the performance of these networks, mainly through reliability concepts, to deal with equipment failures and the resulting effects. This
thesis aims to evaluate reliability indices of distribution systems in the presence of
DG. To this end, three techniques based on Monte Carlo simulation (MCS) are
presented. A classic one, called sequential MCS, aims at modeling the chronological nature of the problem as well as the uncertainties arising from the intermittency of the DG sources. The second one, based on a quasi-sequential MCS, is characterized by its simplicity and ability to maintain the flexibility of sequential
MCS, but with better performance in terms of precision and processing time. Finally, an MCS based on the concepts of chronological system state transition, also
provides precision and flexibility to the reliability assessment. New test functions
are proposed to achieve this goal. Two systems with DG insertion are used to
evaluate the performance of the proposed concepts and techniques: IEEE RBTS, a
standard academic network widely used in the reliability area; and another real
network. The exhaustive discussion of the results confirms that both proposals
meet the established objectives.
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