distance from ground - zone in PVsyst shading scene

[PVsystUser]

I changed this number to different values ( 0.5, 2m, 30m) and it seems it is not reflected anywhere. at least when having multiple zones with different distance from ground , they all look to at the same heigh : 

 

[Linda Thoren]

Hello,

I did a similar test in version 8.0.18 and is seems to work as it should on my side. The zone to the left is places 0.5m above the ground the the zone to the right 5m above the ground. 

If the issue persist, please describe further how to reproduce it.

Kind regards,

[PVsystUser]

My PVsyst version is 7.2.16. 

[Linda Thoren]

Please update to the newest version

If you must stay at version 7, you can mark all the tables and move the selection using the arrow, or define the height in the tools section:

 

 

[PVsystUser]

I am adding this question under this thread as it might be a version-related issue similar to the above issue.
I have two projects that are the same except for the shading layout. I see ~2% difference in the near shading loss (4.5% vs. 6.7%), which does not make sense for not such a big difference in their layout. 
The site is flat, and the module is First Solar so no backtracking. We have removed the trees, and the result didn't change.
Could you please give us some idea of what we can check to nail down the source of the issue?
We can't share the logs.

Some screenshots are shared below. 

 

 

[Linda Thoren]

Please verify the Trackers diffuse shading definition in the Tools tab. If you are not using the All trackers option, verify that a representative set of trackers have been chosen. 

 

[PVsystUser]

Thanks but there is no such thing in V 7.2.16 

 

[PVsystUser]

I ran the same variant in PVsyst 8 and got a huge difference in near shading loss. Does it make sense? please see the highlighted cells below. the only difference between two is they were ran in two different versions:  

[Linda Thoren]

With PVsyst version 7, it was an automatic mode for diffuse shading calculations for systems that involve trackers, in version 8 the automatic mode has been removed. Now, users are required to manually define a representative tracker for diffuse shading calculations.

You define a representative tracker by clicking “Tools”, “Trackers diffuse shading definition”. In this tool you can choose to calculate the diffuse shading factor for all trackers, or select a representative tracker that will be used to evaluate the diffuse shading factors

You can find more details about this update and instructions in the PVsyst Help documentation here: PVsyst Diffuse Losses with Tracking Systems.

Indeed, many updates and improvements has been done since version 7.2.16 that especially concerning the near shadings. In general you can find the changes that has been done in the release notes and major changes are discussed in the forum in the links below: 

https://www.pvsyst.com/help/release-notes/index.html#exec-1--version-801

https://forum.pvsyst.com/forum/29-pvsyst-main-changes/