Annual shading losses per module (or per zone) for complex 3D shading scene

[Le Déaut]

Hello,

I am working on a project with a complex 3D shading scene (multiple sheds defined on 3D sensitive surfaces), and my goal is to identify which specific areas of the field are the most suitable for installing PV modules.
To do this, I would need to obtain annual shading losses for each individual module, not only per orientation (eventually per zone would be fine) 

In the user interface, the only shading results available are:

• global shading losses,
• shading losses per orientation
• and instantaneous shading visualization in the 3D animation.

What I cannot find is any way to extract annual shading losses per module (e.g., module #1 = X%, module #2 = Y%, etc.), which would allow me to compare zones and optimize the layout.

Does PVsyst currently provide any output listing annual shading losses per module? or per zone ? Or per string ? 

Thank you in advance,

Ludovic

[Michele Oliosi]

Hi ! 

Currently that is difficult to do for each table. For zones, a workaround can be found. The idea is to use the "partial shadings caclulation group" concept (https://www.pvsyst.com/help/project-design/shadings/partial-shadings-and-calculations.html). You can put a zone in the group. Then run the simulation, and the shading loss factor will be computed on that group + any additional shading objects (not the other tables though unfortunately). For zones the approximation should be good.

This can be done through the interface, and as long as there are not too many groups should be feasible by hand.

I have been experimenting with a script and PVsystCLI to try to define the groups by modifying the variant file and running the simulation programmatically. While this is possible, it is rather convoluted. The caveat of the other tables not casting shadows remains though. I need to experiment a bit more to get a result table by table.