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Steady state and short-circuit conditions within E.ON 110kV power network at bridge operation of transformers T401 and T402 in 400/100kV transformer station Čebín
Klobučník, Jozef ; Janda, Petr (referee) ; Blažek, Vladimír (advisor)
Master’s thesis deals with computation of steady state and short-circuit conditions in the 110 kV distribution network in the nodal area of Čebín. Computations are done during independent operation and bridge operation of transformers T401, T402 in transformation station Čebín with proposed configuration of network. Additional computations of steady state during specific operating conditions such as (T401 outage, disconnection of line 5553) were done during network operation in bridge operation of T401, T402. Voltage conditions in substations, load of 110kV lines and 400/110 kV, 110/HV kV transformers are evaluated based on the computations of steady state. Short-circuit resistance of substations is being evaluated with the aid of calculations of short-circuit conditions. There is a comparison and processed results of computations during independent operation, bridge operation, special operational states and proposed technical measures of operation in bridge operation in the end of the thesis. Theoretical part of the master’s thesis deals with the description of 110 kV distribution networks, theory of calculation of the steady state of electric system with the aid of Newton iterative method a calculation of single-phase and three-phase short-circuit current with the aid of method of symmetrical components.
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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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Stabilized operation and short - circuit conditions within E.ON 110 kV power network supplied from Otrokovice 110kV switching station, during the period of 2011
Jurča, Ondřej ; Rampl, Martin (referee) ; Blažek, Vladimír (advisor)
Distribution network 110 kV owned by E. ON in the area Otrokovice; powered by 110 kV and two variants of involvement contained.The first option is basic involvement, without the use of the bridge. The second option includes involvement with the bridge. The aim of this study is to compare; by calculating the steady-state network operation and short circuit conditions of the network, the involvement of these two options. The thesis is divided into two parts, theoretical and practical. The theoretical part consists of a description of the steady operation of networks of high-voltage and short circuit ratio calculations. Load flow calculations are described by the Gauss-Seidel and Newton iterative method. In the case of short-circuit conditions, the effects of their characteristic values, processes and various methods of calculation are described.In the second part, this theoretical knowledge is applied to input data and dispatching programme with the appropriate calculations of network operation and short circuit conditions. The calculated values are listed in the thesis, on the basis of which an evaluation of the two possible connections is made.
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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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Steady state and short-circuit conditions within E.ON 110kV power network at bridge operation of transformers T401 and T402 in 400/100kV transformer station Čebín
Klobučník, Jozef ; Janda, Petr (referee) ; Blažek, Vladimír (advisor)
Master’s thesis deals with computation of steady state and short-circuit conditions in the 110 kV distribution network in the nodal area of Čebín. Computations are done during independent operation and bridge operation of transformers T401, T402 in transformation station Čebín with proposed configuration of network. Additional computations of steady state during specific operating conditions such as (T401 outage, disconnection of line 5553) were done during network operation in bridge operation of T401, T402. Voltage conditions in substations, load of 110kV lines and 400/110 kV, 110/HV kV transformers are evaluated based on the computations of steady state. Short-circuit resistance of substations is being evaluated with the aid of calculations of short-circuit conditions. There is a comparison and processed results of computations during independent operation, bridge operation, special operational states and proposed technical measures of operation in bridge operation in the end of the thesis. Theoretical part of the master’s thesis deals with the description of 110 kV distribution networks, theory of calculation of the steady state of electric system with the aid of Newton iterative method a calculation of single-phase and three-phase short-circuit current with the aid of method of symmetrical components.
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Stabilized operation and short - circuit conditions within E.ON 110 kV power network supplied from Otrokovice 110kV switching station, during the period of 2011
Jurča, Ondřej ; Rampl, Martin (referee) ; Blažek, Vladimír (advisor)
Distribution network 110 kV owned by E. ON in the area Otrokovice; powered by 110 kV and two variants of involvement contained.The first option is basic involvement, without the use of the bridge. The second option includes involvement with the bridge. The aim of this study is to compare; by calculating the steady-state network operation and short circuit conditions of the network, the involvement of these two options. The thesis is divided into two parts, theoretical and practical. The theoretical part consists of a description of the steady operation of networks of high-voltage and short circuit ratio calculations. Load flow calculations are described by the Gauss-Seidel and Newton iterative method. In the case of short-circuit conditions, the effects of their characteristic values, processes and various methods of calculation are described.In the second part, this theoretical knowledge is applied to input data and dispatching programme with the appropriate calculations of network operation and short circuit conditions. The calculated values are listed in the thesis, on the basis of which an evaluation of the two possible connections is made.
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