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Technical modification design of the electrical power systems for Modřice and its surroundings
Šerý, Petr ; Kopička, Marek (referee) ; Ptáček, Michal (advisor)
ABSTRACT This thesis is concerned with a technical modification of design of the electrical power systems for Modřice and its surroundings. The thesis describes a basic theoretical distribution of the electricity network and the distribution network itself. Following chapters are devoted to the development and construction of the HV networks and to the methods and ways of calculating the steady operation of the network. These methods are then used in the computational programs that are presented in the next chapter of this paper. The aim of the practical part of the thesis is to first determine the current state of the network in the given location. Furthermore, several modifications are proposed according to the requirements for increasing the power consumption or connecting the new supply places. The proposed modifications are further assessed for the different operating conditions. The result is a network that is functional, operational and reliable. The whole analysis is carried out in the PAS DAISY Off-line V4 Bizon computing program.
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Use of the railway traction elements for distribution system support
Dékány, Michal ; Radil, Lukáš (referee) ; Ptáček, Michal (advisor)
The bachelor thesis deals with the transition to a unified power supply system of the traction system of the Czech Republic. Describes the possibilities of using converters in various connections to improve the quality of electricity on the distributor side. The work presents current innovative solutions that use converters to support the distribution network by preventing the transmission of unwanted parameters from the traction network to the distribution network, such as higher harmonics, and also describes the possibilities of two-way power supply with their help.
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Operation of embedded cable lines into HV distribution grid
Černý, Tomáš ; Wasserbauer, Vojtěch (referee) ; Ptáček, Michal (advisor)
The thesis focuses on a section of cable line inserted into overhead high voltage power line. The essence is a description of the benefits, risks and impacts of the operation of such sections in terms of protection, transition processes. etc. The thesis also includes economical comparison of an acquisition and operating costs of both overhead and cable line. The topic of this thesis was given by ČEZ Distribuce a.s.
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Model comparison of restoration paths for a system power station in MODES and PSCAD
Peterka, Michal ; Helbich, Jiří (referee) ; Ptáček, Michal (advisor)
The thesis deals with the comparison of two restoration paths in case of the black start in the MODES and PSCAD simulation programs. The aim was to compare the voltage waveforms in individual nodes and the system frequency. At the same time, simulations were compared with a real test. The route models in the MODES program were created earlier and the task was to create the same routes in the PSCAD program using the parameters available from the MODES program. The route models in the PSCAD environment included both the original and the new models of individual elements, which had to be assembled from function blocks. The results of the programs differed slightly, which was caused mainly by the differences of some elements that were used. In the thesis, all the necessary information was stated to make the simulations repeatable.
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Overview of the Current State of the Art of Existing Energy Community Concepts in Europe and their Possible Implementation in the Czech Republic
Vojtech, Jan ; Ptacek, Michal
This paper presents an overview of the current stateof the art of energy communities in Europe and discusses realexamples/concepts implemented in some countries that fulfill theissued EU directives by different technical ways. Therefore,it brings so-called allocation keys used in the individual energycommunity concepts for the distribution of produced energybetween consumers and shows the important differences of thesekeys and their impacts (benefits/disadvantages) for consumersor distribution system operators, so distribution tariffs and thefuture evaluation of allocation keys are also presented.Furthermore, there is the discussion which energy communityconcepts (implemented in European countries) or their specificparts can be transferred to the Czech Republic, especially in thecontext of the current laws and their preparations.
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Electrical system designs of the hotel complex with wellness
Veselý, Vít ; Bátora, Branislav (referee) ; Ptáček, Michal (advisor)
The bachelor thesis deals with the implementation of the technical solution - the distribution of the electrical network of the hotel with wellness. The theoretical part of the thesis presents an analysis of the basic elements used for the design of substations and busbars and introduces the basic computational apparatus for sizing transformers and lines. The practical part presents the various technical solutions for the design of the electrical network of the site, specifically addressing the design of low voltage (LV) cable lines for two variants providing 100 % backup of the electrical supply to the site and two other variants providing 50 % backup. In addition to the technical design of the individual options, the work also presents for each option their detailed financial budgets, including their overall economic comparison.
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Evaluation of the energy community concept in the Czech Republic conditions
Vojtěch, Jan ; Galík, Tomáš (referee) ; Ptáček, Michal (advisor)
The thesis is divided into six main parts. The first part deals with the description of European directives, regulatory instruments, and support instruments in the field of energy communities in the countries of the European Union, specifically Austria, Germany, France, and Spain. The second part is devoted to a study predicting the future development of domestic decentralized sources and their installed capacity potential. The third part deals with the current legislative state of domestic energy communities, including an outline of the possible future form of energy communities. The fourth part deals with the description of usable allocation keys and the differences between them, as well as distribution tariffs of the public distribution network and their possible adjustments and discounts related to energy communities. The fifth part deals with the description of the model and the scenarios used for its analysis, including the presentation of the results and the impact on distribution tariffs. The last part presents recommendations for distribution system operators, the Energy Regulatory Office and for energy communities.
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Application of the risk index matrix principles to electric power distribution system elements
Bruzl, David ; Hála, Vojtěch (referee) ; Ptáček, Michal (advisor)
The master thesis deals with the evaluation of the use of the risk index matrix (RIM) principle for distribution system elements. It evaluates the current use of RIM in EG.D, a.s., examines the individual RIM inputs and also reveals the bottlenecks. An updated method of assigning elements to the RIM is proposed that addresses the problems described and is also generally applicable to other distribution system elements at medium and low voltage levels. At the same time, a sensitivity analysis is performed to investigate the influence of different factors on the RIM and to verify the stability of the categorization of the resulting RIM. The thesis also serves as a methodology for assigning elements to the RIM and includes recommendations for the distribution system operator (DSO).
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