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High-voltage/low-voltage prefabricated substantions
Loveček, Michal ; Šafránek, Ivan (referee) ; Haluzík, Evžen (advisor)
The diploma thesis is dedicated to modern kiosk-type transformer substations PET, that are used when modernizing distribution network. Since such substations are placed on publicly accessible places it is really important that they are safe for service staff as well as for the public. Apart from the highest characteristic values stress is put upon the safety. Right construction, functionality and safety is verified using the type-tests as stated in ČSN EN 62271-202. In the last part of the thesis there are the methods and procedures of type-testing described.
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Rotor fault diagnosis of induction motors
Bednařík, Václav ; Cipín, Radoslav (referee) ; Vítek, Ondřej (advisor)
This bachelor thesis focus on the faults of induction motors. In general terms to mechanical and electirc faults and their influence on induction motor. Further on the tests, that are conducted on induction motors to detect faults and states that precede them. Main part is devoted to rotor eccentricity and broken rotor bars. Eccentricity is solved within theoretical analysis and measurements on free damaged motors. As well as broken rotor bars, which are supplemented by measurements on three damaged rotors. There are two types of eccentricity, static and dynamic. Faults of broken rotor bars is solved in terms of postion of broken rotor bars and their number.
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Testing of HV switch-disconnectors
Hanák, Zdeněk ; Dohnal, Petr (referee) ; Bušov, Bohuslav (advisor)
This project describes the problems of high voltage switch disconnectors and their requirements. In this project are described type tests which are done for high voltage switch disconnectors and for testing their characteristics. Further was also performed measurement and calculation of warming on outdoor switch disconnector.
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Testing of HV switch-disconnectors
Hanák, Zdeněk ; Dohnal, Petr (referee) ; Bušov, Bohuslav (advisor)
This project describes the problems of high voltage switch disconnectors and their requirements. In this project are described type tests which are done for high voltage switch disconnectors and for testing their characteristics. Further was also performed measurement and calculation of warming on outdoor switch disconnector.
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Rotor fault diagnosis of induction motors
Bednařík, Václav ; Cipín, Radoslav (referee) ; Vítek, Ondřej (advisor)
This bachelor thesis focus on the faults of induction motors. In general terms to mechanical and electirc faults and their influence on induction motor. Further on the tests, that are conducted on induction motors to detect faults and states that precede them. Main part is devoted to rotor eccentricity and broken rotor bars. Eccentricity is solved within theoretical analysis and measurements on free damaged motors. As well as broken rotor bars, which are supplemented by measurements on three damaged rotors. There are two types of eccentricity, static and dynamic. Faults of broken rotor bars is solved in terms of postion of broken rotor bars and their number.
|
|
|
High-voltage/low-voltage prefabricated substantions
Loveček, Michal ; Šafránek, Ivan (referee) ; Haluzík, Evžen (advisor)
The diploma thesis is dedicated to modern kiosk-type transformer substations PET, that are used when modernizing distribution network. Since such substations are placed on publicly accessible places it is really important that they are safe for service staff as well as for the public. Apart from the highest characteristic values stress is put upon the safety. Right construction, functionality and safety is verified using the type-tests as stated in ČSN EN 62271-202. In the last part of the thesis there are the methods and procedures of type-testing described.
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