معلومات المقرر

Lehrinhalte
[list]
[*]Introduction, properties of the insulating gas sulfur hexafluoride (SF6) and gas mixture SF6/N2, SF6 handling
[*]Historical development of gasinsulated systems, life time, statistics on age of installed switchgear, space consumption
[*]Components and configuration of a GIS (3-phase, 1-phase; bushings, insulators, disconnectors, earthing switches, circuit breakers, instrument transformers, cable boxes, surge arresters, bus bars; particle traps; secondary equipment)
[*]Test requirements and specifications for GIS
[*]Insulation coordination and overvoltage protection, response to very fast transients (VFTO)
[*]Defects in GIS and diagnostic tools
[*]Gasinsulated medium voltage switchgear
[*]Gasinsulated lines (design, laying techniques, comparison with cables and overhead lines)
[*]Current carrying capability, thermo-mechanical stress
[*]Alternative insulating gases for application in “Eco”-GIS / - GIL (F-ketones, F-nitriles, “Clean Air” etc.)
[*]Gas-solid insulation systems under DC stress
[*]Special challenges of HVDC systems (impact factors, particle behavior, test requirements and specifications)
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Literature
Lecture slides and other information material supporting the lecture can be downloaded from the HST-Homepage: [url]http://www.hst.tu-darmstadt.de[/url]. IEC test standards can be leant out for use during the lecturer time.

Voraussetzungen
HST I and HST II