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Design of the distribution network branch for new family and apartment houses in Újezd u Brna
Frechová, Lucie ; Novák, Vojtěch (referee) ; Ptáček, Michal (advisor)
The work mentions the concept of present electricity networks in the Czech Republic and based on voltage levels it also describes distribution networks in more detail. Furthermore it brings the analysis of legislative conditions and technical aspects, under the rules of the distribution network operation, for new customers who require new connection to electricity network. Because of the steady-state network evaluation represents very important issue of the power system calculations, therefore it is explained in theoretical part of this work. Nowadays, Gauss-Seidel method and Newton iterative method are generally used for the steady-state analysis. Mentioned ones are also described and compared together in theoretical part. Furthermore methods are applied in practical part which solves specific configuration of the network in a given area. Moreover there are the basics of the conductor sizing in terms of the warming, both during normal operation and during a short circuit. However, it is necessary to respect other aspects of the conductor sizing, therefore issues of mechanical and electrical strength, the voltage drop and the sizing economy are also shown. There is also the characteristic of proposed and the description of the individual components which are used for the network i.e. transformation station, HV and LV switchgear, transformer, HV and LV cabling. It also concludes the characteristics of the design opportunity with their power and economical comparison.
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Analysis of the operation of the lattice network Brno - střed
Frechová, Lucie ; Vaculík,, Jan (referee) ; Ptáček, Michal (advisor)
The thesis shows the historical development of the South Moravian electricity system and the development of Brno´s network is discussed in more detail, especially the current form of the network from the outskirts of the city to its historical centre. The lattice network, as a subject of the analysis, is described in terms of the operation and reliability of the power supply. It also informs about the gradual development of the technology applied in the lattice network Brno-střed. The practical part performs the analysis of theoretical data and recorded data with respect to steady-state and faulty-state operation of the lattice network Brno-střed. The theoretical analysis is based on the simulation and calculation of the lattice network model in the software PAS DAISY Bizon and the monitored parameter is the transformers power load. In addition, the analysis of the real data includes the assessment of the difference average phase current values, as well as voltage, between the transformer phases. There is also the evaluation of the energy flow from the low voltage side to the high voltage side of the analysed network.
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Analysis of the operation of the lattice network Brno - střed
Frechová, Lucie ; Vaculík,, Jan (referee) ; Ptáček, Michal (advisor)
The thesis shows the historical development of the South Moravian electricity system and the development of Brno´s network is discussed in more detail, especially the current form of the network from the outskirts of the city to its historical centre. The lattice network, as a subject of the analysis, is described in terms of the operation and reliability of the power supply. It also informs about the gradual development of the technology applied in the lattice network Brno-střed. The practical part performs the analysis of theoretical data and recorded data with respect to steady-state and faulty-state operation of the lattice network Brno-střed. The theoretical analysis is based on the simulation and calculation of the lattice network model in the software PAS DAISY Bizon and the monitored parameter is the transformers power load. In addition, the analysis of the real data includes the assessment of the difference average phase current values, as well as voltage, between the transformer phases. There is also the evaluation of the energy flow from the low voltage side to the high voltage side of the analysed network.
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Design of the distribution network branch for new family and apartment houses in Újezd u Brna
Frechová, Lucie ; Novák, Vojtěch (referee) ; Ptáček, Michal (advisor)
The work mentions the concept of present electricity networks in the Czech Republic and based on voltage levels it also describes distribution networks in more detail. Furthermore it brings the analysis of legislative conditions and technical aspects, under the rules of the distribution network operation, for new customers who require new connection to electricity network. Because of the steady-state network evaluation represents very important issue of the power system calculations, therefore it is explained in theoretical part of this work. Nowadays, Gauss-Seidel method and Newton iterative method are generally used for the steady-state analysis. Mentioned ones are also described and compared together in theoretical part. Furthermore methods are applied in practical part which solves specific configuration of the network in a given area. Moreover there are the basics of the conductor sizing in terms of the warming, both during normal operation and during a short circuit. However, it is necessary to respect other aspects of the conductor sizing, therefore issues of mechanical and electrical strength, the voltage drop and the sizing economy are also shown. There is also the characteristic of proposed and the description of the individual components which are used for the network i.e. transformation station, HV and LV switchgear, transformer, HV and LV cabling. It also concludes the characteristics of the design opportunity with their power and economical comparison.
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