|
|
Steady-state operation of 110 kV power line
Pastorek, Jaroslav ; Bok, Jaromír (referee) ; Blažek, Vladimír (advisor)
This Bachelor's thesis addresses the steady operation of 110 kV power lines. It is well known that these lines are used within the distribution system of very high voltage levels and are used to transfer large amounts of energy over long distances. The essential prerequisite for the transfer of such an amount of energy is to achieve the greatest efficiency possible. Therefore, there are methods developed, by which under known circumstances on one end of the line we can calculate the line ratios at the other end. These methods can be classified into exact, approximate and graphic methods. With approximate methods, T – element and ? – element, the most popular ones, are used. Only a brief description of the graphic method is given. Before the calculations of these methods, a procedure for determining various parameters of the external line is described. In the practical part, calculations based on the given example are listed. The example addresses calculation of ratios at the start of the line and ratios during short-circuit and freewheeling operation. The end contains a brief summary and comparison of the results. 100 kV lines can be either designed either as buried cables or external lines hanging from pylons. Buried cables are rarely used for 100 kV, so this Bachelor's thesis is focused on external lines.
|
|
|
Design the Transformer Station for the Outgoing Power of Cogeneration Unit
Pastorek, Jaroslav ; Procházka, Aleš (referee) ; Orságová, Jaroslava (advisor)
The thesis deals with the design of a transformer station for the outgoing power of cogeneration unit with an electric capacity of up to 1 MW. The thesis describes the design procedure of individual devices such as a transformer with a nominal ratio 22/0,4 kV, high voltage switchgears and low voltage switchgears. With the proper selection of the transformer, along with the technical parameters, the economic benefits that come from its purchasing and operating costs with the transformer operation are also considered. Based on this, the economic comparison of selected types of oil transformers during 20 years is also developed. Another part of the thesis deals with HV and LV switchgears, which are dimensioned according to shortcircuit conditions in the transformer station. In conclusion this work deals with the grounding of a transformer station and design protection in accordance PPDS.
|
|
|
Deployment of SOFA 2 applications for embedded environment
Pastorek, Jaroslav ; Hnětynka, Petr (advisor) ; Malohlava, Michal (referee)
Development of applications for embedded devices is a daunting task particularly due to the diversity of used hardware. Technologies like Java ME attempt to provide unified programming model in the spirit of slogan "write once - run anywhere"; however the platform specifics still linger. Applications for embedded devices could therefore benefit from the use of component - based development where platform - specific parts can be separated into well - defined easily replaceable components. The goal of this thesis is to analyze the current deployment process for the component applications written using SOFA 2 component system and propose changes that would allow such applications to be deployed in Java ME environment, particularly CLDC configuration with MIDP profile. The proposed solution is based on transformation of SOFA 2 component application into MIDlet application. This transformation includes pregeneration of code for static instantiation of components which is normally done dynamically by interpreting component descriptions. The result of the transformation is standalone MIDlet package that contains all necessary code - this includes adjusted component runtime and components themselves. The development process of SOFA 2 applications is also adjusted to support new deployment process.
|
|
|
Information system for capital brokers
Pastorek, Jaroslav ; Tichý, Tomáš (advisor) ; Pergel, Martin (referee)
Bachelor thesis considers design and implementation of information system for capital broker based on client - server architecture. System provides storage for most important evidencies - clients, contracts, payments, trade orders and other respective evidencies. System also provides functionality for creating sevices of Centrálny depozitár cenných papierov SR and operating trades through Burza cenných papierov Bratislava. All operations accord to legal conditions of Slovenská republika.
|
|
|
Deployment of SOFA 2 applications for embedded environment
Pastorek, Jaroslav ; Hnětynka, Petr (advisor) ; Malohlava, Michal (referee)
Development of applications for embedded devices is a daunting task particularly due to the diversity of used hardware. Technologies like Java ME attempt to provide unified programming model in the spirit of slogan "write once - run anywhere"; however the platform specifics still linger. Applications for embedded devices could therefore benefit from the use of component - based development where platform - specific parts can be separated into well - defined easily replaceable components. The goal of this thesis is to analyze the current deployment process for the component applications written using SOFA 2 component system and propose changes that would allow such applications to be deployed in Java ME environment, particularly CLDC configuration with MIDP profile. The proposed solution is based on transformation of SOFA 2 component application into MIDlet application. This transformation includes pregeneration of code for static instantiation of components which is normally done dynamically by interpreting component descriptions. The result of the transformation is standalone MIDlet package that contains all necessary code - this includes adjusted component runtime and components themselves. The development process of SOFA 2 applications is also adjusted to support new deployment process.
|
|
|
Information system for capital brokers
Pastorek, Jaroslav ; Pergel, Martin (referee) ; Tichý, Tomáš (advisor)
Bachelor thesis considers design and implementation of information system for capital broker based on client - server architecture. System provides storage for most important evidencies - clients, contracts, payments, trade orders and other respective evidencies. System also provides functionality for creating sevices of Centrálny depozitár cenných papierov SR and operating trades through Burza cenných papierov Bratislava. All operations accord to legal conditions of Slovenská republika.
|
|
|
Steady-state operation of 110 kV power line
Pastorek, Jaroslav ; Bok, Jaromír (referee) ; Blažek, Vladimír (advisor)
This Bachelor's thesis addresses the steady operation of 110 kV power lines. It is well known that these lines are used within the distribution system of very high voltage levels and are used to transfer large amounts of energy over long distances. The essential prerequisite for the transfer of such an amount of energy is to achieve the greatest efficiency possible. Therefore, there are methods developed, by which under known circumstances on one end of the line we can calculate the line ratios at the other end. These methods can be classified into exact, approximate and graphic methods. With approximate methods, T – element and ? – element, the most popular ones, are used. Only a brief description of the graphic method is given. Before the calculations of these methods, a procedure for determining various parameters of the external line is described. In the practical part, calculations based on the given example are listed. The example addresses calculation of ratios at the start of the line and ratios during short-circuit and freewheeling operation. The end contains a brief summary and comparison of the results. 100 kV lines can be either designed either as buried cables or external lines hanging from pylons. Buried cables are rarely used for 100 kV, so this Bachelor's thesis is focused on external lines.
|
|
|
Design the Transformer Station for the Outgoing Power of Cogeneration Unit
Pastorek, Jaroslav ; Procházka, Aleš (referee) ; Orságová, Jaroslava (advisor)
The thesis deals with the design of a transformer station for the outgoing power of cogeneration unit with an electric capacity of up to 1 MW. The thesis describes the design procedure of individual devices such as a transformer with a nominal ratio 22/0,4 kV, high voltage switchgears and low voltage switchgears. With the proper selection of the transformer, along with the technical parameters, the economic benefits that come from its purchasing and operating costs with the transformer operation are also considered. Based on this, the economic comparison of selected types of oil transformers during 20 years is also developed. Another part of the thesis deals with HV and LV switchgears, which are dimensioned according to shortcircuit conditions in the transformer station. In conclusion this work deals with the grounding of a transformer station and design protection in accordance PPDS.
|
guest ::
