Simulation mixted orientations in a subfield - solaredge optimizer

[ENGUERRAND Marceau]

Hello, 

I would like to simulate a configuration where I have 2 different orientations in a string, according to the electrical wiring plan (see attachment). 

PVsyst displays an error message, telling I can't define a mix orientation in a subfield. I know there will be few electrical losses and this is not the best configuration but I would like to simulate it. Note that this configuration is accepted by solaredge and is frequently suggested. 

Best regards, 

M Enguerrand

220282 - Plan câblage Solaredge - ORL - A - 250106.pdf

[Robin Vincent]

You are correct, it is not possible to define a single subarray with mixed orientation and SolarEdge optimizers in PVsyst.

Nevertheless, you can achieve a similar result by creating two separate sub-arrays, one for each orientation, then attribute the strings to the same inverter.

To do so, open the "strings configuration" menu in the system definition, then set different sub-arrays to each input of your inverters

[ENGUERRAND Marceau]

Thank you for your answer. I am not sure this could work for my project : 

1) The electrical loss of different orientation is not taken account 

2) The main problem is that for my project, I have : 16 solar pannels NE, 17 pannels SW, 31 pannels E; 26 pannels W. If I understood your suggestion, I would need to define 4 sub arrays but the minimum of pannels for each must be 28 pannels. I can simulate a similar project, for example (31 pannels E, 28 pannels W and the others NE ou SW) but it is not my precise case. 

Is there any solution? 

[Robin Vincent]

If I understand correctly, you need to mix different orientations in a same string.

In that case, the only solution I can think off is to use the "average orientation" option, combining NE + E and SW + W.  Based on your layout, the azimuts seem relatively close, so the resulting transposition error should be small.

You may find more details here : https://www.pvsyst.com/help/project-design/orientations-in-v8/average-orientation.html?h=average

 

This will allow you to define only two subarrays, each with strings long enough to be connected to a MPPT input.

 

If you still have issues regarding your project, please contact us at support@pvsyst.com with your project attached.