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Cyber security analysis of photovoltaic systems for apartment buildings
Škoviera, Tomáš ; Kohout, David (referee) ; Mikulášek, Michal (advisor)
This bachelor thesis focuses on the security problem of a photovoltaic power plant, which is connected to the internet in order to configure it and remotely monitor statistics on electricity production and consumption. A photovoltaic system with an inverter from a selected company with parameters suitable for a small apartment building or a similarly sized building was analyzed. The main objective of the work is to analyze the communication interfaces and protocols through which the inverter communicates, in order to determine whether it is safe from a cybersecurity point of view to have such a system connected to the Internet. The work also includes performing several flooding attacks on the inverter to see if the inverter is able to detect that it is under attack and defend against it appropriately.
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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.
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Document Generation System for Energy Optimization
Hrabě, David ; Zaklová, Kristýna (referee) ; Hynek, Jiří (advisor)
The goal of the thesis was the design and implementation of software for the company Optimal-Energy.cz, a.s., which automatically proposes measures for optimizing the resource consumption of buildings, especially the installation of photovoltaic systems and heat pumps. Based on the calculations, it generates documents that inform the customer about the proposed optimizations and contain the necessary contracts for performing the installation. The approaches to document creation and the possibilities of its automation have been analyzed. The original energy optimization calculations have been simplified and unified to operate on a common model based on the performed analysis. The solution was then implemented in the .NET environment using the F# and C# programming languages.
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Possibilities of using a photovoltaic system in a family home
Herník, Martin ; Linda, Jakub (referee) ; Toman, Filip (advisor)
This bachelor thesis deals with the design of a photovoltaic power plant that will meet the needs and conditions of a specific family house. The design includes photovoltaic options such as battery and non-battery system solutions. In this work, the selection of appropriate components was made, where the emphasis was on achieving optimum system performance and minimizing costs while maintaining given efficiency and reliability. Finally, the economic evaluation of the two solutions in terms of cost and paybacks is assessed. The final design is proposed in the light of the current energy price situation and the continuous forward movement of PV technology.
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Photovoltaic system for a family house
Hájek, Vojtěch ; Gregorovičová, Eva (referee) ; Toman, Filip (advisor)
This bachelor thesis explores the utilization of a photovoltaic system to reduce a family house's dependency on external electricity supply and achieve financial savings. Within the design section of the thesis, specific concepts of photovoltaic systems were developed. The primary objective is to minimize electricity costs while maximizing the use of renewable energy sources. These concepts are designed to achieve a major, rather than complete independence from grid electricity. Furthermore, the proposals were compared based on financial requirements, energy yield, and potential savings. The obtained results allow for the identification of a suitable proposal for a specific family house based on its energy needs and the owner's financial capabilities. Additionally, the study demonstrates the impact of subsidies on the overall return on investment in the project.
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Utilization of natural resources for a garden greenhouse
Šplíchal, Jan ; Babička Fialová, Dominika (referee) ; Jegla, Zdeněk (advisor)
The thesis performs the analysis of the potential of using natural resources, specifically solar radiation and rainwater, for garden greenhouses of various sizes, using self-created balance calculation tools and calculations made by them using available meteorological data. At the same time, the thesis provides a comprehensive overview of the technological possibilities of photovoltaic and irrigation systems in the context of garden greenhouses. The results of the calculations show that appropriately designed technological solutions can effectively ensure sufficient electricity and water for the autonomous function of the system. For smaller greenhouses, a simple photovoltaic system with one panel of about 0.5 m2 and a battery with a capacity of 300 Wh is sufficient for normal seasonal operation. For medium-sized and larger greenhouses, it is necessary to consider the optimal number of panels and batteries with regard to operational needs and the length of the season, but the number of panels and batteries is also acceptable in this case. For the irrigation system, it is important to consider the capacity of the barrel, which should be proportionate to the way the water is used. If the primary use of drip irrigation is being considered, then the performed analyzes show that a barrel capacity of 100 liters should be sufficient even for the needs of larger greenhouses.
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Detached house Křenovičák
Pagáčová, Nikola ; Kolář, Radim (referee) ; Jelínek, Petr (advisor)
The aim of the bachelor´s project is to design a single-family detached house ,,Křenovičák”. The thesis has two parts: the project documentation for a building permit, and documentation of heating systems, etc. The house is located in Křenovice u Slavkova. It´s make an L-shape. The ground floor has partly a roof slab with a green roof, the first floor has a roof slab with aggregate. Floor slab over first floor is partly supported by three columns. On the first floor, you can find a lobby, a corridor, a bathroom, an utility room, a study room, and living space connected with a kitchen and dining space next to terrace. On the second floor is a master bedroom, two separate rooms for children, a bathroom, a separate toilet, and another study room. Walls are from ceramic blocks and slabs are from precast concrete panels. There´s ground-water heat pump with ground well connected with floor heating system and 200 litres hot water cylinder. House using water mains and main sewer. Main concept design is focused on mechanical ventilation system with heat recovery. Ventilation rate is 400 m3/h, because of cooker hood. There´s equal pressure ventilation. Fans are connected to supply by flexible ducts. House is connected to electricity grid. On the higher roof are photovoltaic panels to generate electricity. Excess energy is stored in batteries. Supply ducts and pipes are in ceiling voids. The documentation is included Energy Performance Certificate.
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Analyses of properties of photovoltaic inverters
Melichařík, Martin ; Vyroubal, Petr (referee) ; Vaněk, Jiří (advisor)
The thesis deals with photovoltaic systems with a focus on photovoltaic inverters. Solinteg, a company with a growing clientele, needs to set up a workstation to analyse PV inverters and systems at their branch in Brno for the European market. There are different types of system using different inverters and so the analysis for a particular system or inverter may be different. For a thorough analysis of these systems, special laboratory equipment is required, such as special power supplies and loads to simulate fault or operating conditions, complemented by measurement tools such as a power analyzer.
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Financial return of home photovoltaic power plant
Jančík, Josef ; Malý, Milan (referee) ; Mauder, Tomáš (advisor)
This thesis if focused on return on ivestment evaluation of a photovoltaic system of residential house. The calculation is made for photovoltaic system with and without accumulation and in combination with other alternative source – heat pump. The costs of instalation and working of new systems are then compared between each other and with the cost of working of a current system without photvoltaic.
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Draft mix for network independence
Horváth, Radovan ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
The aim of this diploma thesis is the development of research on the topic of the draft mix for network independence. Next is the outline the various design solutions of the battery systems for accumulation electric energy and balance model energy supply system for the selected object. The practical part of diploma thesis deals with necessary resources and the size of batteries for autonomous operation during the summer months and also implements technical and economic studies aimed at finding cost-effective solutions. The work is divided into 6 chapters that contain 16 tables and 18 figures. Diploma thesis brings an option to configure a photovoltaic system and also describes the features, functions and the choice between the most used technologies. Evaluation of results of theoretical methods are described in the final part.
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