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Selection and Application of Surge Arresters for Middle-Voltage Air-Insulated Switchgears
Němec, Ondřej ; Bernard, Michal (referee) ; Drápela, Jiří (advisor)
The purpose of this thesis is to introduce readers with design of a surge arresters in four different categories. In the first part of this thesis is described theory of overvoltage, surge arresters and testing. The second part of this thesis is focused on design of surge arresters to protect from overvoltage due switching capacitive loads. The thesis continued with design of surge arresters in medium voltage network. The next part is design of surge arresters to protect from overvoltage due switching inductive loads. The next point is protective distance of surge arresters in different lighting overvoltages. In the conclusion of this thesis is the appreciation of whole problems about surge arresters.
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Fast Transient Phenomena in High Voltage
Vala, Martin ; Dohnal, Petr (referee) ; Krbal, Michal (advisor)
This work deals with research and description of the fast transients in high voltage technics. First part deals with division of fast transients and description of an impulse wave properties. Second part is focused on atmospheric overvoltage description and on direct and indirect lightning surge protection methods. Next, there are described the main characteristics and division of the surge protection devices in the work. In the next part, there are introduced some sort of high voltage generators, used for meassurement of impulse wave in a transmission line. In the last part there is stated an analysis of practical measurement of impulse weaves and surge arresters by using a Marx generator.
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Surge Arrester Installation in The Industrial Network
Korejčík, Michal ; Šlezingr, Jan (referee) ; Orságová, Jaroslava (advisor)
The work deals with issues of transient overvoltages. The first part of the work is focused on the overvoltages generating during switching actions. Overvoltage, which is arising during interrupting small inductive current, is practically tested by program ATP. Next part of this work is engaged in an area of atmospheric overvoltages. There are described typical characteristics and parameters of atmospheric overvoltages. The following chapter is devoted to high-voltage surge arresters - the elements, which avert danger of serious equipment damage. Spark-gap arresters as well as MO-arresters are described in this work. Their general characteristics and typical parameters are being introduced. Finally, the last part of the work explains the concept of protective distance and the equation, after whose is protective distance determined. The concept is verified by the help of program ATP, in which it is possible to simulate the phenomena arising from the transient overvoltages.
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Fast Transient Phenomena in High Voltage
Vala, Martin ; Dohnal, Petr (referee) ; Krbal, Michal (advisor)
This work deals with research and description of the fast transients in high voltage technics. First part deals with division of fast transients and description of an impulse wave properties. Second part is focused on atmospheric overvoltage description and on direct and indirect lightning surge protection methods. Next, there are described the main characteristics and division of the surge protection devices in the work. In the next part, there are introduced some sort of high voltage generators, used for meassurement of impulse wave in a transmission line. In the last part there is stated an analysis of practical measurement of impulse weaves and surge arresters by using a Marx generator.
|
|
|
Surge Arrester Installation in The Industrial Network
Korejčík, Michal ; Šlezingr, Jan (referee) ; Orságová, Jaroslava (advisor)
The work deals with issues of transient overvoltages. The first part of the work is focused on the overvoltages generating during switching actions. Overvoltage, which is arising during interrupting small inductive current, is practically tested by program ATP. Next part of this work is engaged in an area of atmospheric overvoltages. There are described typical characteristics and parameters of atmospheric overvoltages. The following chapter is devoted to high-voltage surge arresters - the elements, which avert danger of serious equipment damage. Spark-gap arresters as well as MO-arresters are described in this work. Their general characteristics and typical parameters are being introduced. Finally, the last part of the work explains the concept of protective distance and the equation, after whose is protective distance determined. The concept is verified by the help of program ATP, in which it is possible to simulate the phenomena arising from the transient overvoltages.
|
|
|
Selection and Application of Surge Arresters for Middle-Voltage Air-Insulated Switchgears
Němec, Ondřej ; Bernard, Michal (referee) ; Drápela, Jiří (advisor)
The purpose of this thesis is to introduce readers with design of a surge arresters in four different categories. In the first part of this thesis is described theory of overvoltage, surge arresters and testing. The second part of this thesis is focused on design of surge arresters to protect from overvoltage due switching capacitive loads. The thesis continued with design of surge arresters in medium voltage network. The next part is design of surge arresters to protect from overvoltage due switching inductive loads. The next point is protective distance of surge arresters in different lighting overvoltages. In the conclusion of this thesis is the appreciation of whole problems about surge arresters.
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