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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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Design of overvoltage arresters in high voltage switchgear depending up parameters of connected load
Němec, Ondřej ; Bernard, Michal (referee) ; Lázničková, Ilona (advisor)
The purpose of this thesis is to introduce the reader about the problems of design of surge arresters. The first part of this thesis describes problems of surge. In the next part of this thesis are described test pulses needed to test surge arresters. The next issues of this thesis are medium voltage switchgears and surge arresters ABB and their test. In the next part ot this thesis are described type of network according earthing of transformers. The other point of this thesis are aplications of surge arresters, figures and calculation for networks, generators, transformers and motors. In the conclusion of this thesis is the appreciation of whole problems about surge arresters.
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Monitoring of partial discharges and their minimization in switchgear UG ZS1
Bajánek, Tomáš ; Bernard, Michal (referee) ; Lázničková, Ilona (advisor)
Bachelor's thesis deals with partial discharges which occur in switchgear ABB UniGear ZS1. The work deals with the theoretical analysis of partial discharge, a description of the parameters and possibilities of measuring partial discharges. It deals with the description of switchgear as an electrical equipment and analysis of the places where it may lead to formation of partial discharges. The work contains a description of the laboratory for measurement of partial discharges in the company ABB, description of measuring equipment LDS-6 and basic project of optimization of partial discharges in switchgear ABB UniGear ZS1.
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Access to Justice in Environmental Matters
Bernard, Michal ; Damohorský, Milan (advisor) ; Smolek, Martin (referee) ; Sobotka, Michal (referee)
The aim of this work on Access to Justice in Environmental Matters is to describe possibilities of access of natural and legal persons to the judicial protection of the environment in the Czech Republic. Judicial protection is an important element of ensuring the right to favourable environment. To ensure effective environmental protection and the rights of individuals to the favourable environment, it is necessary to ensure the widest possible access of natural and legal persons to public authorities and courts claiming the illegality of decisions, acts and omissions of public authorities or third parties. Broad judicial protection of the right to favourable environment is necessary and indispensable part of democratic system and a prerequisite for the functioning of basic human rights in practice. This work must first address the question of substantive legal right to favourable environment -its content and range of entities to which this fundamental constitutional right belongs. Right to favourable environment means the right to an environment which is polluted below given limit. Thus, on environmental polluted and stressed as a consequences of human activities, including the introduction of physical, chemical or biological agents emissions and agents in extent to which the legal regulations on...
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Monitoring of partial discharges and their minimization in switchgear UG ZS1
Bajánek, Tomáš ; Bernard, Michal (referee) ; Lázničková, Ilona (advisor)
Bachelor's thesis deals with partial discharges which occur in switchgear ABB UniGear ZS1. The work deals with the theoretical analysis of partial discharge, a description of the parameters and possibilities of measuring partial discharges. It deals with the description of switchgear as an electrical equipment and analysis of the places where it may lead to formation of partial discharges. The work contains a description of the laboratory for measurement of partial discharges in the company ABB, description of measuring equipment LDS-6 and basic project of optimization of partial discharges in switchgear ABB UniGear ZS1.
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Design of overvoltage arresters in high voltage switchgear depending up parameters of connected load
Němec, Ondřej ; Bernard, Michal (referee) ; Lázničková, Ilona (advisor)
The purpose of this thesis is to introduce the reader about the problems of design of surge arresters. The first part of this thesis describes problems of surge. In the next part of this thesis are described test pulses needed to test surge arresters. The next issues of this thesis are medium voltage switchgears and surge arresters ABB and their test. In the next part ot this thesis are described type of network according earthing of transformers. The other point of this thesis are aplications of surge arresters, figures and calculation for networks, generators, transformers and motors. In the conclusion of this thesis is the appreciation of whole problems about surge arresters.
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