Loïs Masson

Hello, In France, low-voltage grid connections are only available for photovoltaic plants with an apparent power of up to 250 kVA. However, in some cases, we need to to use several inverters, resulting in a total installed power higher than 250kVA. In this situation, inverters are subject to a static power limitation of 250 kVA to comply with low-voltage grid connection constraints. What's the best way to simulate this limitation in PVSYST ? Should I simply define a grid power limitation ? or should I change the maximum power output of my inverters in the .ond files ? I have tested both approaches but the results are not the same I would appreciate your insights on the most accurate way to model this scenario. Best regards

Hello, I noticed something in the software regarding inverter loss over nominal inv. power : The creation of a subfield for each MPPT in the system or t he grouping of multiple MPPTs into the same subfield leads to significant simulation differences (see the example below with an additional 3% in losses). How PVSYST manages the repartition of strings when we don't create a subfield for each MPPT ? Is there a trick to avoid creating a subfield for each MPPT (to save time) without generating these losses?

Hello, Before PVSYST 8.0, I used to create all my near shading scenes in the coordinate system X-Y, before rotating them around the scene origin, to get the real azimut of my project. In my opinion, it was easier to move all the componants just with their X and Y positions. But now, PV tables are already oriented according to their azimut and it's now longer and less precise to create near shadings scene. Have you a tips to solve this problem ? thanks

Hello, I work for a photovoltaic company, and sometimes we have to use .pan files provided by manufacturers (Jinko for example). But we always observe big differences between these files and those of the PVSYST database (especially for IAM loss). Even if these files are certified by SGS laboratory. So, I would like to understand what process is used by PVSYST to certify the conformity of .pan files integrated into the database. Do have you one or more laboratories that you work with, and that we can trust ? Thank you for your response !

Hello, VOLTEC 126 VSMD 395Wc and 80 VSMP 400 Wc

Hello, I have the same problem. Can we use partitions with non-rectangular PV table ? otherwise, is there a another solution with Voltec panels to simulate electrical shading ? Thanks for your response !

Hello, I can't do my module layout with the selected PV module, having this error (image1) "The PV module 'name' is defined as "in length" with 2 cells in parallel. It cannot be used with the Module Layout calculation." In the module settings, it is defined as "in width" and not in length. Here are the informations about the module (image2) Any solution ? Thanks

Hello, I would like to know if the solar panel are tested before being integrated into the database ? For the same project, I created 2 variants, one with the .pan file of the JINKO JKM445-54HL4R-V included in your databased, and another one with a .pan file of the same panel but sent by JINKO. As you can see in the 2 graphs below, there is a huge difference between the 2 losses due to the IAM factor. I imagine that .pan files included in the database are more precise, but does it mean that we cannot trust manufacturers when they send us .pan file ? Thank you in advance for your answer !