Global degradation factor

[Michalis Angeli]

I want to ask, how can i calculate the global degradation factor on aging dialog in order to define it correctly.

And wich is the deference with aver. degradation factor?

 

[Michele Oliosi]

Please read https://www.pvsyst.com/help/ageing_general.htm

The black values (%) are calculated from the red values (%/year). Since we calculate in the middle of the year (1/2 year mark), 0.5%/year means 0.25% for the simulation.
To this, the mismatch degradation values are added, which are calculated from a series of random samples. By the way, your mismatch loss seems wrong.

Please uncheck “keeps calculated mismatch values” and click on “add statistics” a couple of times. You can then resave the model.

 

[Michalis Angeli]

Thanks for your answer, however which are the best values for mismatch to insert? 
Because as i saw in a tutorial from PVSYST on Youtube for Aiging gives Imp RMS degradation equal to 0.6%/year and Vmp RMS degradation equal to 0.5%/year.
Should i keep that values in my simulation ?

 

[Michele Oliosi]

20 hours ago, Michalis Angeli said:

tutorial from PVSYST on Youtube for Aiging

I think these were just example values. Unless you have information from a research group / lab / measurements, I would recommend to just leave the default values.

[Michalis Angeli]

Okay now i fiqured it out.

 

Thank you!