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PostPosted: Wed Apr 14, 2021 3:42 am 

Joined: Wed Apr 14, 2021 3:29 am
Posts: 4
I genuinely need urgent help with getting this right as I have to submit my dissertation in 5 days and this the only thing that I have not done correctly but I have been trying to do it right for weeks.
No matter what I change on here that I always get something wrong in red letters.
I am trying to do a solar farm design with approximately 5254 solar panels. If someone can help me to get it right I would really appreciate it


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PostPosted: Wed Apr 14, 2021 8:13 am 
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Joined: Thu Sep 26, 2019 10:47 am
Posts: 16
Dear omairahm,

The message in red is normal because your inverter has a very high power compared to the Total STC power of your PV array.

You have a 1665 Kwp PV array, so you must choose an inverter between 1200 and 1500 KWac

Regards,

_________________
Best regards | Cordialement
Lazare Fesnien – www.pvsyst.com


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PostPosted: Wed Apr 14, 2021 2:17 pm 

Joined: Wed Apr 14, 2021 3:29 am
Posts: 4
Quote:
Dear omairahm,

The message in red is normal because your inverter has a very high power compared to the Total STC power of your PV array.

You have a 1665 Kwp PV array, so you must choose an inverter between 1200 and 1500 KWac

Regards,
If I change one thing I get another wrong, now I got this:


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PostPosted: Wed Apr 14, 2021 3:15 pm 
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Joined: Thu Sep 26, 2019 10:47 am
Posts: 16
Dear,

The message in red indicates an error.

You must therefore make changes in order to match the characteristics of your inverter.

For more information, you can read the links below :
https://www.pvsyst.com/help/inverter_ar ... b=oversize
https://www.pvsyst.com/help/inverter_op ... limits.htm

Regards,

_________________
Best regards | Cordialement
Lazare Fesnien – www.pvsyst.com


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PostPosted: Thu Apr 15, 2021 9:12 pm 
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Joined: Tue Oct 18, 2016 3:31 am
Posts: 348
Check your PAN file. Your Vmp value does not seem correct, it is too high. For a 1500V system, you should be in the mid to high 20's for string length. You also want a higher DC/AC ratio, 1.2 to 1.3 good range. I suggest getting a new PAN file, or double checking the IV characteristics against the datasheet.


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