DocumentCode :
510978
Title :
Influence of buffer volumes on pressure rise in switchgear installations due to internal arcing
Author :
Schmale, M. ; Pietsch, G.J.
Author_Institution :
Syst. Technol. - Inf. Syst., E.ON Netz GmbH, Bayreuth, Germany
fYear :
2008
fDate :
7-12 Sept. 2008
Firstpage :
201
Lastpage :
204
Abstract :
During internal arcing in gas insulated and metal-enclosed switchgear, overpressure is discharged through relief openings into the switchgear room. At high power input the mechanical strength of the switchgear room (building) can be exceeded. Normally this is avoided by sufficient large relief openings in the walls of the building to the environment. A further possibility is the use of intermediate rooms (volumes between the compartment, where the arc burns, and the switchgear room) as buffer volumes, in which the hot gas of the arc expands first before delivering its energy to the switchgear room. By this procedure a reduction of the pressure in the switchgear room is reachable. Exploratory overpressure calculations are performed in order to find out the efficiency of such a measure in dependence of several parameters like the size of the intermediate volume and relief openings.
Keywords :
circuit-breaking arcs; gas insulated switchgear; pressure control; gas insulated switchgear; internal arcing; metal-enclosed switchgear; overpressure discharge; pressure rise reduction; switchgear installations; switchgear room; Boundary conditions; Copper; Ducts; Gas insulation; Information systems; Orifices; Space vector pulse width modulation; Stress; Switchgear; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Gas Discharges and Their Applications, 2008. GD 2008. 17th International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-0-9558052-0-2
Type :
conf
Filename :
5379288
Link To Document :
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