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Steady state and short-circuit conditions in 110kV E.ON network fed from Čebín transformer station
Krutiš, Petr ; Janda, Petr (referee) ; Blažek, Vladimír (advisor)
Master’s thesis deals with computation of steady state and short-circuit conditions in 110 kV nodal area of Čebín. The first part of thesis is theoretical. There is described computation of steady state and short-circuit conditions. There is description of 110 kV nodal area of Čebín too. There are made computations in the practical part. Two types of operation of transformers T401 and T402 are evaluated. The transformers operate independent at first, then they are connected in parallel. Voltage conditions in substations, load of lines and transformers, power losses and short-circuit resistance of substations in 110 kV nodal area of Čebín are evaluated based on the computations. There are compared the both types of operation of transformers in the end of practical part.
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Service operation of nuclear power plants
Krutiš, Petr ; Foral, Štěpán (referee) ; Radil, Lukáš (advisor)
This thesis deals with the service operations that are essential for the smooth running of the Dukovany Nuclear Power Station. The first part describes the nuclear power station with its VVER 440 reactors; it particularly describes basic devices of the primary circuit, which include a nuclear reactor, a steam generator, the main circulating pump, a pressurizer and the main closing fitting. The next chapter concerns water management, whose main objective is pumping crude water and treating it so that it can be used in technological circuits of the power plant as well as in secondary systems, which maintain the required parameters and conditions necessary for the operation of basic devices of the primary circuit. The secondary systems secure compensation of reactivity changes in the reactor. Next, they secure refilling, cleaning and degassing of the coolant. The final part of this Bachelor thesis describes an increase of the electrical output of one of Dukovany's units to 500 MW and its effect on the secondary systems of the primary circuit. The main adjustments before the output increase were performed on secondary circuit devices and electrical devices. Primary circuit's machinery remained unchanged.
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Service operation of nuclear power plants
Krutiš, Petr ; Foral, Štěpán (referee) ; Radil, Lukáš (advisor)
This thesis deals with the service operations that are essential for the smooth running of the Dukovany Nuclear Power Station. The first part describes the nuclear power station with its VVER 440 reactors; it particularly describes basic devices of the primary circuit, which include a nuclear reactor, a steam generator, the main circulating pump, a pressurizer and the main closing fitting. The next chapter concerns water management, whose main objective is pumping crude water and treating it so that it can be used in technological circuits of the power plant as well as in secondary systems, which maintain the required parameters and conditions necessary for the operation of basic devices of the primary circuit. The secondary systems secure compensation of reactivity changes in the reactor. Next, they secure refilling, cleaning and degassing of the coolant. The final part of this Bachelor thesis describes an increase of the electrical output of one of Dukovany's units to 500 MW and its effect on the secondary systems of the primary circuit. The main adjustments before the output increase were performed on secondary circuit devices and electrical devices. Primary circuit's machinery remained unchanged.
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Steady state and short-circuit conditions in 110kV E.ON network fed from Čebín transformer station
Krutiš, Petr ; Janda, Petr (referee) ; Blažek, Vladimír (advisor)
Master’s thesis deals with computation of steady state and short-circuit conditions in 110 kV nodal area of Čebín. The first part of thesis is theoretical. There is described computation of steady state and short-circuit conditions. There is description of 110 kV nodal area of Čebín too. There are made computations in the practical part. Two types of operation of transformers T401 and T402 are evaluated. The transformers operate independent at first, then they are connected in parallel. Voltage conditions in substations, load of lines and transformers, power losses and short-circuit resistance of substations in 110 kV nodal area of Čebín are evaluated based on the computations. There are compared the both types of operation of transformers in the end of practical part.
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