Simulating multiple orientations in a single subarray

[Jason Brandt]

Hello, 

I´ve been playing around with version 8 pvsyst and specifically with the functionality of multiple orientations. 

It's now becoming more common terrain following trackers (segmented in bays typically with 5 - 8 modules per pay and around 96 per tracker rows). With these trackers the axis tilt can change quite significantly along the tracker row (i think nevados specifies up to 37-degree changes from bay to bay). My question is the following: is it possible to assign multiple orientations to a single subbarray? because i am getting a warning that some of the individual tracker's tilts are too far from the average of the array. 

I can create multiple orientations with different average tilts however i worry that this won´t be accurate if I'm assigning only one orientation to my subarrays for the calculation.

Will it become a future functionality to maybe group the trackers in a subbarray on the 3D scene and have the average tilts be calculated from this? 

Thanks for the help. 

 

[Michele Oliosi]

Sorry, this warning is not appropriate in your setting, we still need to address the way it is triggered so that it becomes more relevant.

I think it was added with the case of different nominal orientations in mind. But currently, for your case, i.e., one nominal orientation with many variations due to the topography, the way to go is: use only one orientation.

This has one drawback: the averaging error and the mismatch caused by the individual orientations are not taken into account, i.e., on this end the calculation is a bit optimistic. But since our calculation is already conservative in other ways (e.g., backtracking modeling), I do not think this small underestimation of losses is critical.

In the future, we want to account for these two losses we are yet missing.