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IEC short circuit analysis in PSS/E

Hi everbody

I am trynig to make short circuit analysis using the IEC method I am using PSS/E V. 33. My model only containes positive seq. impedanceses so only three phased faults is analyzed. I find it hard to finde any good information about how to set up an fault analysis in PSS/E in the PSS/E documentation.

1. Is it necessary to set up classical fault analysis conditions first? or can I directly run the IEC fault analysis?

2. In what situations should Calculating Automatic Sequencing Fault (Activity ASCC) be used? and what dos ASCC do compared with the IEC method?

3. In both the above mentioneds in PSS/E, there is the possibility to choose different options for: Line charging, shunt and load. When changing these parameters what are you actually specifying?

4. Dos anyone have a standart procedure for short circuit analysis in PSS/E that they are willing to share ??

Hope someone can helpe

Best regards Thomas