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Influence of Distributed Generation on Given Area of 22 kV Distribution Network
Samuel, Tomáš ; Bráblík, Libor (referee) ; Orságová, Jaroslava (advisor)
The Thesis deals with the current problem related to the connection of dispersive sources to the distribution network. The advantageous legislative support, however, gives a rapid rise to the sources of this kind. Current pricing philosophy favours in particular the growth of photovoltaic power plants. The introduction is aimed at the dispersive sources locating so as to give a comprehensive solution and better understanding of this issue. The equipments of this kind are located in accordance with legislation in force; however, it is necessary to formulate the possibilities of placing them from the view of rational use of the area with the aim of the public weal accordance of both public and private interests. Talking about connection of the new dispersive sources to the distribution network, it is important to mention the legislation, legal directives and regulations delimitating this kind of trade. This theme is the subject of another chapter of the work. Particular attention is paid to the regulation on conditions of connection to the distribution network. When connecting the sources to the distribution network the biggest technical problem from the view of electrical engineering is undesirable influence on the quality parameters (voltage) in this network. This is in particular the voltage change after connection, then, depending on the type of source, the emission of the current harmonic, sharp voltage change, etc. Considering current rise of the dispersive sources connected to the distribution network, more and more influence will appear in quantity parameters. For this reason there will be a lot of search for the methods of preventing from the negative influence on the network. From all of the above said reasons, the work is aimed at the operation analysis of the part of the distribution network, calculation of the network qualitative parameters and searching for the methods of negative influence rectification owing to switching processes of the distribution system. So as to determine the quantitative parameters we used the E-influence programme. Final paragraphs are devoted to the changes to come not only in legislation but, in general, in the approach of the distribution system operators not only to the ways of another connection of such sources but even the regulation of the dispersive sources already connected.
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Model of the metropolitan optical network
Prudík, Jiří ; Hudcová, Lucie (referee) ; Křivák, Petr (advisor)
The purpose of this master’s thesis is foremost to provide a simple guide how to build elements of optical metropolitan area network. The basic model consists to sequence of construction, network topology, passive and active parts. The collection contains examples of alternative technology such as Wireless LAN with different frequency. The optical network construction based on optical cable, fibres, splices, trays, adapters, connectors and active parts for example a lot of media convertor models. After that there are demonstrating type of wavelength division multiplexer used in metropolitan area network – passive planar PCL splitter. One of the passive planar splitter are used to increase optical fibre channel. At the end of the collection a simplified examples of used measurements – optical time domain reflectometry and optical fibre transmission. Contains standard protocols or reflectogram. The conclusion of this thesis summarizes costs of FTTb (Fibre To The Building) model of optical metropolitan area network in Czech republic and future contribution for society.
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Vliv intenzity odlistění na kvalitu hroznů
Zugárková, Petra
The aim of this thesis was to establish experiment with different dates of defoliation in the zone of grapes, evaluate the infestation by Botrytis cinerea putrefaction, monitor the development of qualitative and quantitave parametres and the content of phenolic compounds. The experiment was conducted at white wine grapes variety Ryzlink rýnský a blue wine grapes variety Carmenere. The literary section describes leaf and its area, microclimate of leaf walls, qualitative parametres, balance of the vineyard, green works, Botrytis cinerea and partial defoliation. Within the experiment were evaluated and controled at the defoliated variation: quality parameters (sugar content, titratable acid pH, assimilable nitrogen, amount of glucose and fructose, tartaric acid and malic acid), infestation by Botrytis cinerea putrefaction, content of phenolic compounds. Measurements were performed at the Department of viticulture and viniculture in faculty of Horticulture in Lednice. Used instruments: TitroLine - pH, titratable acid, assimilable nitrogen; HPLC - tartaric acid, malic acid, glucose and fructose; Spectrophotometer - the content of phenolic compounds; Digital Scale - weight of the grapes. As the most appropriate option in terms of measured parameters was selected the option before the flowering and during the flowering of Ryzlink rýnský and Carmenere.
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Porovnání systémů ozelenění vinic ve vztahu ke kvalitě hroznů
Masníková, Zuzana
The aim of this thesis was to describe the system comparison of cover crops in vineyards in relation to the quality of the grapes. Analytical evaluation of the quality and degree of infestation by fungal diseases was described. The object of the experiment was to compare the two cover cropping systems and thus the tilled and non-tilled systems in five terms, two of which terms were taken into account. Using the analytical methods have been established quality parameters such as sugar content, pH, titratable acidity, assimilable nitrogen, tartaric acid and malic acid, citric acid, glucose and fructose, a weight of 50 berries. Additional parameters were examined, the rate of infestation by fungal diseases. All measurements were conducted at the Institute of Viticulture and Enology, Faculty of Horticulture in Lednice in Moravia. Following instruments were used for further measurement: refractometer (sugar content), the device TitroLine (pH, titratable acidity, and assimilable nitrogen), and HPLC apparatus (tartaric acid, malic acid, citric acid, glucose and fructose). Examined samples of Pálava variety came from vineyards in the wine Gotberg Popice.
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Kvalitativní parametry v procesu plánování a nákupu tiskové inzerce
Hatoň, Luděk ; Puchýř, Milan (advisor)
komunikace, reklama, mediální plánování a nákup, brief, základní mediální veličiny, vliv kvalitativních parametrů, tisková inzerce, komunikační strategie, sestavování mediaplánů, schvalovací proces, kritéria výběru, cílové skupiny, prodaný náklad, čtenost, tradice tiskových titulů, redakční obsah, timing, výkyvy čtenosti, buyer, planner, produkt-médium, umístění inzerce, nové formáty, layout, cenová politika vydavatelství, způsob hodnocení, komplexní hodnotící systémy, úspěch značek, vývoj tiskového trhu, noviny, časopisy, zadavatel
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