André, i m attaching smth could be interesting for you guys. Please everyone consider it confidential as it took me time to make it. In my opinion sometimes IEC and other Norms should be updated (or refined).
As you can see (sorry that it is in spanish if you want i can translate this excel), i m supposing 0ºC (ambient temperature) and maximum radiation (close to 1000 W/m2) which in Mid-Chile could be rare as it happens at solar midday. And the worse case: The Plant stops and resumes at midday (in these events we consider Open Circuit not mppt). At any time Voltage exceeds 1000 V. Taking into account -10ºC of cells in PVSYST there is noway we can select a 1000 V inverter.
Would it be complex in PVSYST to develop SKOPLAKI formules? Good to be able to change Temperature (i didnt know it was possible), but as you can see in my excel, wind speed, height of anemometer at measures, rugosity of terrain, voltage drop upstream of the inverter are also present.
Best Regards Tecnun
Was it useful?
BR Jose M