Katinka

Thank you very much! I have only been working with PVsyst for a short time, so I didn't know the tools > edit orientations menu. Now it works :)

Thank you very much for your prompt reply dtarin. You meant the parameters in "other limitations" under "project settings", right? I have set the two parameters "Discriminating orient. difference between shading planes" and "Maximum orient. difference for defing average (spread) orientation" as low as possible. Unfortunately this did not work. Did I misunderstand your hint? Best regards

Hello everyone, I am planning a solar park with two different arrays: one with a module table tilted at 15 degrees, one with a module table tilted at 20 degrees. In the orientation part I also defined two different fields with these tilts. When I run the simulation, save this variant, open another variant and then return to the previous one, the inclination has automatically changed from 15 to 15.4 degrees. This also changes the size ratio of the two arrays. I have tried several times, always with the same result... Do you have an idea how this happens? Thanks a lot!

Dear Andre, I have another question about the maximum current per inverter input or MPPT input for multi-string inverters with multiple MPPT. For my project I use Huaweis string inverters SUN2000-185KTL-H1 with 9 MPPT. Considering the maximum input current of this MPPT, 2 parallel module strings can be switched to each MPPT. Due to the available module area and the module type 22 inverters are required. In total, a maximum of (22*9*2=) 396 parallel strings are therefore possible. The system part tells me instead that 391 to 418 parallel strings are possible. Where do these values come from? I have tested two different variants: 1. variant without checking the box "Use multi-MPPT feature" 2. variant with ticking the box "Use multi-mppt feature". The first one seems to take into account the maximum current per MPPT, as there is a "inverter loss over nominal inv power". Is this correct? But why not consider it as "Inverter loss due to max input current"? So the defined current limit in the inverter data is only taken into account to calculate the losses, but not to determine the maximum number of parallel module strings, right? So the best way could be to check the box "Use multi-MPPT feature" and adjust the number of strings until the individual maximum desired power loss is reached? Thanks a lot in advance!

Many thanks for your reply! The terrain is flat and there is forest in the direct surroundings. The sheds have a distance of 30m to the trees in east, south and west direction and 20m to the trees in north direction to minimize shading losses. I model with a 3D shade scene.

Hello forum, I am still in the early stages of working with PVsyst, so I hope the following question is not too stupid. I wonder why the electrical loss according to strings decreases with reduced inter-row spacing. I have assumed that it increases analogously to the near shadings: irradiance loss with smaller inter-row spacing due to higher mutual shading? I have examined three different variants: 1) pitch: 12.5 | limit profile angle: 17° | electrical loss acc. to strings: -1.93 % 2) pitch: 13.2 | limit profile angle: 15.5° | electrical loss acc. to strings: -2.09 % 3) pitch: 13.6 | limit profile angle: 14.8° | electrical loss acc. to strings: -2.12 % Thank you in advance!