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Analysis of technical solutions for power supply of traction power line
Zlámal, Marek ; Bušov, Bohuslav (referee) ; Valenta, Jiří (advisor)
This work is the analysis of power supply for railway lines with voltage 25 kV AC. The single-phase supply has resulted in a number of problems, such as undesirable side effects associated with the one way power supply, distortion of current and voltage curve using DC engines in olders types of locomotives. Text deals with railway electric power equipment, especially with metal enclosed switchgear, insulated with air or sulfur hexafluoride. There is been elaborated in more detail the design solutions, advantages and disadvantages of their use. Methodology of necessary calculations for designing and dimensioning of traction switchgear is described later in this text, practical example for specific conditions included.
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SF6 Alternatives in Power Engineering
Hofrová, Klára ; Pelikán, Luděk (referee) ; Krbal, Michal (advisor)
Sulphur hexafluoride is most widely used gaseous insulating medium. Its excellent electronegative properties make it practically unrivalled in the energy sector. However, due to its strong global warming potential and long lifetime in the atmosphere, it is considered one of the fluorinated greenhouse gases that the European Commission wants to restrict or ban completely. This has created a problem for companies that manufacture equipment with SF6. In this paper, the latest regulations of the European Commission are compiled. It also discusses the technical and environmental requirements that are placed on these gases. Last but not least, the alternatives and their properties are listed, followed by the results from the test cell.
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Analysis of technical solutions for power supply of traction power line
Zlámal, Marek ; Bušov, Bohuslav (referee) ; Valenta, Jiří (advisor)
This work is the analysis of power supply for railway lines with voltage 25 kV AC. The single-phase supply has resulted in a number of problems, such as undesirable side effects associated with the one way power supply, distortion of current and voltage curve using DC engines in olders types of locomotives. Text deals with railway electric power equipment, especially with metal enclosed switchgear, insulated with air or sulfur hexafluoride. There is been elaborated in more detail the design solutions, advantages and disadvantages of their use. Methodology of necessary calculations for designing and dimensioning of traction switchgear is described later in this text, practical example for specific conditions included.
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