Time Evolution of a Short Circuit Current
Time Evolution of a Short Circuit Current
When a short circuit occurs in a power system, the time evolution of the fault current depends mainly on the system's - (reactance to resistance) ratio and on the fault occurrence angle (measured relative to the system's voltage) [1].
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This Demonstration shows a typical short circuit current (plotted in red) for a single phase, assuming no load current before time for simplicity. The fault current's DC exponentially decaying component is also plotted, as well as the positive and negative envelopes; these three components are plotted in dashed lines. The sinusoidal voltage is plotted in black.
t=0