Contingency analysis
We can define N-1 cases to be analysed as contingencies. This means that indices of net.line, net.trafo, net.trafo3w can be defined as contingencies, which are switched off one at a time. The power system is analyzed with power flow calculations, and the min/max values among all the N-1 cases are obtained for relevant variables.
A tutorial that introduces this feature with an example is available at Contingency analysis