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The problem here is that PSSE doesn't have any channel for fault current monitoring, or not even to plot a branch current.

However, the fault current can be plotted with the following method:

1. Split the faulted bus, in my example bus 154 in savnw network is split and a zero impedance line (ZIL) is inserted to the new bus 254.

2. Add a branch-MVA channel for the line between bus 154 and 254. Add a bus voltage channel for bus 154.

3. Perform a dynamic simulation and apply the fault at the new bus, 254. The total fault current will then go through the branch from bus 154 to 254.

After simulation, use a formula to plot the following: branchMVA / (Vpu*Vbase) / sqrt(3). In the following example the fault is applied at time = 0.5 and cleared at time = 0.6 s. The curve shows the bus fault current, i,e, the current flowing through line 154 - 254.

The inital fault current is above 16.5 kA and the current declines during the fault to about 13 kA.