Proceedings of the intensive programme 2012
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Item Computer simulation of induction crucible furnace with supplementary construction element(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Kroupa, Oldřich; Tesařová, Miloslava
Item Induced losses in linear equipment buried near an overhead power line(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Hamar, Roman; Kropík, Petr; Šroubová, Lenka; Tesařová, MiloslavaItem Simulation of electrical lines with distributed parameters in the program Dynast(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Síťař, Vladislav; Tesařová, MiloslavaItem New method for preparation of nanomaterial powders(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Rieger, David; Tesařová, MiloslavaItem Biomass usage in CHP units(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Király, Jozef; German - Sobek, Martin; Zbojovský, Ján; Pavlík, Marek; Tesařová, MiloslavaItem Operation of hydropower plants in Slovakia(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Zbojovský, Ján; Hocko, Pavol; Pavlík, Marek; Király, Jozef; Tesařová, MiloslavaItem Possibilities of power flows control(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Kušnír, Stanislav; Jakubčák, Roman; Hocko, Pavol; Tesařová, MiloslavaItem Network configuration impact on during-fault voltage in distribution systems(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Tesařová, Miloslava; Tesařová, MiloslavaItem Simulation of non-linear load(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Síťař, Vladislav; Tesařová, MiloslavaItem Models of renewable energy sources for grid analysis(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Novák, Matúš; Hocko, Pavol; German - Sobek, Martin; Hrinko, Marián; Tesařová, MiloslavaItem Operation of distributed energy sources(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Hvizdoš, Marek; Tkáč, Ján; Tesařová, MiloslavaRenewable energy sources are becoming more prominent in securing the energy needs of mankind. Increasing share of renewable distributed electricity sources is one of possibilities how to cover growth of electricity consumption. So far, these sources have insignificant contribution in energy balance in Slovakia. Interest of investors in sources installing is very intensive and reaches some GW. This article is focused to possibilities of modelling of operation of distributed energy sources.Item Impact of the renewable energy sources on long-term dynamic in the Slovak power system(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Hocko, Pavol; Petráš, Jaroslav; Novák, Matúš; Zbojovský, Ján; Tesařová, MiloslavaThis paper discuss about long-term dynamics simplified model of the power system. This model represents Slovak power system connected trough inter-tie line to interconnected power system – ENTSO-E. The Slovak power system itself is represented by node SEPS. To this node conventional and renewable energy sources are connected. The significant growth of installed power capacity of renewable energy sources (RES) in the last few years may cause incidental disturbance of power balance in the power system. This problem is typical for photovoltaic power stations. It is very hard to predict photovoltaic (PV) power production especially during cloudy weather conditions. Because of this fact it is very important to determine maximum share of RES in each power system. This paper deals with impact of PV in power system.Item Influence of photovoltaic power system on environment in the Czech Republic(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Raková, Lenka; Škorpil, Jan; Tesařová, MiloslavaThis paper describes the potential impacts of photovoltaic power plants on environment in the Czech Republic. In the first part is evaluated an analysis of a life cycle of photovoltaic modules by means of CLM method’s. Next there are describes effect on landscape character, built up area and impact of photovoltaic power plants on the environmental during their operation. The finish part deals with the recycling method and with the influence of semiconductor on people.Item Voltage control of distribution networks with photovoltaic power sources(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Veleba, Jan; Tesařová, MiloslavaThis paper deals with voltage control of distribution networks with high representation of photovoltaic power sources. To simulate this, modified IEEE 123-bus radial power system has been equipped with time-dependent loads and generations from PV power plants to include various loading and voltage scenarios of the system. For voltage control, operations of load tap-changing transformers (LTCs) connected to both HV and MV voltage levels have been simulated using traditional Gauss-Seidel method. Multiple load flow calculations along with voltage control algorithms for LTCs were performed in Matlab environment.Item Simplified assessment of connectivity of photovoltaic power plants in the low voltage networks(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Kouba, Daniel; Tesařová, MiloslavaThis paper deals with simplified computing of connectivity of photovoltaic power plants in the lowvoltage networks, describes possibilities of the connection of one or more different power plants in three, two, or one phase. In our case it is computed the voltage change from all the PVP connected to the same network. The results from this paper can help to faster assessment of possibilities of connection the new renewable energy sources.Item Fire risks of photovoltaic systems(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Bělík, Milan; Tesařová, MiloslavaThis article deals with fire risks of photovoltaic systems mounted on buildings and roofs. The aim of the article is to explain the fire progress in building, fire rating and performance of photovoltaic system and possible ways of extinguishing. Specific dangers for acting fire units are described in detail. The article is also targeting on secondary hazards for surrounding objects and people during and after the fire.Item Residual heat utilization of photovoltaic cells(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Medveď, Dušan; Tesařová, MiloslavaThis paper deals with the solution of thermal field distribution in the area of photovoltaic cells and its subsequent utilization possibilities.Item Some results from research and development of thin-film photovoltaic cells(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Benešová, Hana; Škorpil, Jan; Tesařová, MiloslavaThe current predominate photovoltaic (abbr PV) technology is based on the crystalline silicon (c- Si). Unfortunately the PV cells created by the c-Si have few disadvantages. Therefore, the researchers worldwide are developing an alternative material in effort to improve the PV cells performances. The thin-film materials offer promising alternative to the c-Si technology. The thin films are base of the PV 2nd and 3rd generation. The properties of these cells are very largely determined by properties of the thin-film materials. For this reason, it is absolutely necessary to deal with their detection. This paper is concerned with some of the experimental methods used in the research and development of the thin-film generation and with some results of this research. The first part is very shortly introduction to problematic of the thin-film PV cells. The second part of paper discusses one of specific experimental methods, with which we can meet in research and development of PV cells 2nd and 3rd generation – X-Ray diffraction. The last part presents some results from this method.Item New trends in photovoltaic(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) German - Sobek, Martin; Király, Jozef; Novák, Matúš; Hrinko, Marián; Tesařová, MiloslavaThe photovoltaic (PV) used in harvesting the solar energy and transferring it to electricity is being continuously improved and still it is an active research topic. This paper deals with the latest information from the field of photovoltaic cells and its efficiency and materials used for their production. It also presents new trends in the inverters used for PV energy systems.Item Possibilities of using solar energy(University of West Bohemia. Faculty of electrical engineering. Department of electrical power engineering and environmental engineering, 2012) Jakubčák, Roman; Kušnír, Stanislav; Katin, Matúš; Tesařová, MiloslavaThis paper deals with renewable sources of energy. This paper offers information about energy from Sun that is used widely around the world. The Sun is the most powerful source of energy, and therefore we development new technologies that are able use this clear energy.
