The only information I have is the line voltage level and power transformers capacities from the substation that will feed this 69 kV line, from where I want to simulate in ETAP a tap-off substation of 30 MVA (69/23 kV) with its corresponding power demands. Is there a standard or any recommendation for studies like this when there's no information about the short circuit level at point of connection (1-ph and 3-ph Isc)? I suppose that it is better to assume the worst case scenario, but without any information I don't know what to do.
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