A deep understanding of the physical processes coming along with the current interruption in high voltage circuit breakers is essential for the optimization of today’s switching *** a switching arc in a model circuit...
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A deep understanding of the physical processes coming along with the current interruption in high voltage circuit breakers is essential for the optimization of today’s switching *** a switching arc in a model circuit breaker is studied by means of computational fluid dynamics(CFD)simulations and optical emission spectroscopy(OES)in this *** investigations are performed in carbon dioxide(CO2)at absolute filling pressures of 0.1 and 0.5 *** simulations are carried out based on a model of the arcing zone including a consistent treatment of the radiation transport and the wall *** ion line radiation is analysed in the experiment using an optical path in the heating channel between the electrodes inside the nozzle *** pressure value in the arc is estimated based on the line width-intensity *** values correspond to the measured pressure outside the *** the temperature profiles,a good agreement within the accuracy of the approaches is observed between the CFD simulations and the results of OES.
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