Comparing simulations with diferent meteo

[Fredy]

Good afternoon

I'm comparing 3 different Meteo databases and in this 3 simulations i used all parameters losses modules inverters are the same just changed the Meteo,

I get the following results:

 

 

I don’t understand why Meteonorm VS PVgis have almost the same Global Radiation and the PR changes so much (81.6 - 82.2)?

and Meteonorm VS Meteosat have the same difference on PR (81.6 - 82.2), with lower radiation and higher GlobINC i have more gain in (Hor / Inc) that i understand

Is there some other parameter that affects this when using different Meteo files?

Thank you for your support

[André Mermoud]

The main differences between these different runs probably come from the Diffuse part in these data.

The transposition (i.e. the GlobInc/GlobHor ratio) is highly dependent on the Diffuse fraction, whatever the model used.