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Effect of Light Source Position on Operating Parameters
Múdry, Peter ; Krbal, Michal (referee) ; Baxant, Petr (advisor)
The main task of this bachelor’s thesis is to find out, how does the working position of light source influence the lighting parameters of light source and possibly other closely related variables as temperature of light source etc. Purpose of this work is to measure luminous flux of some selected light sources’, where significant influence on luminous flux caused by working position of source can be expected and to process measured results. This work processes: lighting parameters of light sources’, theoretical information about influence of temperature and position on operating parameters of light sources, optimal working conditions of light sources and deals with electrical discharge in lightings.
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Steady state and short-circuit conditions within E.ON 110 kV power network at parallel operation of nodal areas of Čebín substation and Sokolnice substation
Múdry, Peter ; Rampl, Martin (referee) ; Blažek, Vladimír (advisor)
In the distribution network 110 kV of E.ON Company there are the nodal areas of Čebin substation and Sokolnice substation which are operated separately at the present time. There is one 400/110 kV transformer for each nodal area. In case of fault on one of these transformers or on busbar in which the set transformer is working, it comes to an outage of electric supply in the set nodal area. This problem has to be solved with help of the parallel operation of nodal areas of Čebín substation and Sokolnice substation. The main and also the practical task of this work is to design the bridge connection appropriate for parallel operation of nodal areas (supply transformers 400/110 kV). With help of a computing program there were made calculations of steady state and short-circuit conditions in distribution network 110 kV for separated and parallel operation of nodal areas. Voltage conditions, load of transformers (400/110 kV and 110/vn kV) and conditions on 110 kV lines are evaluated and controlled as the result of steady state calculations. Based on short-circuit conditions there is controlled the short-circuit resistance of the substations. Finally there are compared advantages and disadvantages of separated and parallel operations of nodal areas. If necessary, technical arrangements required for introduction of parallel operation of nodal areas of Čebín substation and Sokolnice substation will be designed. The theoretical part of the work deals with calculation of steady state with help of iterative methods, namely Newton´s and Gauss-Seidel methods. There are further described the method of calculating short-circuit currents, characteristic values and time behaviours of short-circuit current.
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Effect of Light Source Position on Operating Parameters
Múdry, Peter ; Krbal, Michal (referee) ; Baxant, Petr (advisor)
The main task of this bachelor’s thesis is to find out, how does the working position of light source influence the lighting parameters of light source and possibly other closely related variables as temperature of light source etc. Purpose of this work is to measure luminous flux of some selected light sources’, where significant influence on luminous flux caused by working position of source can be expected and to process measured results. This work processes: lighting parameters of light sources’, theoretical information about influence of temperature and position on operating parameters of light sources, optimal working conditions of light sources and deals with electrical discharge in lightings.
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Steady state and short-circuit conditions within E.ON 110 kV power network at parallel operation of nodal areas of Čebín substation and Sokolnice substation
Múdry, Peter ; Rampl, Martin (referee) ; Blažek, Vladimír (advisor)
In the distribution network 110 kV of E.ON Company there are the nodal areas of Čebin substation and Sokolnice substation which are operated separately at the present time. There is one 400/110 kV transformer for each nodal area. In case of fault on one of these transformers or on busbar in which the set transformer is working, it comes to an outage of electric supply in the set nodal area. This problem has to be solved with help of the parallel operation of nodal areas of Čebín substation and Sokolnice substation. The main and also the practical task of this work is to design the bridge connection appropriate for parallel operation of nodal areas (supply transformers 400/110 kV). With help of a computing program there were made calculations of steady state and short-circuit conditions in distribution network 110 kV for separated and parallel operation of nodal areas. Voltage conditions, load of transformers (400/110 kV and 110/vn kV) and conditions on 110 kV lines are evaluated and controlled as the result of steady state calculations. Based on short-circuit conditions there is controlled the short-circuit resistance of the substations. Finally there are compared advantages and disadvantages of separated and parallel operations of nodal areas. If necessary, technical arrangements required for introduction of parallel operation of nodal areas of Čebín substation and Sokolnice substation will be designed. The theoretical part of the work deals with calculation of steady state with help of iterative methods, namely Newton´s and Gauss-Seidel methods. There are further described the method of calculating short-circuit currents, characteristic values and time behaviours of short-circuit current.
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