Suneye shading effects in 2012.11.30

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Vijaykrishna
Topic Author
New Member

10 Dec 2012 23:44 #1073 by Vijaykrishna

Suneye shading effects in 2012.11.30 was created by Vijaykrishna

Hello this question is regarding the new SAM version (2012.11.30) The Question is as follows:

- I am trying to understand the effect of shading at a location using the SunEye Hourly Shading file in Michigan. However there seems to be no difference in energy output(kWh) with or without enabling the hourly shading option(with data). I did not have to do anything else in the previous versions. I am missing anything?

I have attahed the.zsam file and the Suneye hourly shading file(.csv)

Thanks for your Help.

Vijay

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Paul Gilman
Platinum Member

14 Dec 2012 16:04 #1074 by Paul Gilman

Replied by Paul Gilman on topic Suneye shading effects in 2012.11.30

Dear Vijay,

Thank you for pointing out this issue. We are investigating it now, but it looks like the PV models' hourly beam shading matrix table (1 x 8,760) may not be working correctly in SAM 2012.11.30. I will post an update as soon as I have more details.

Best regards,
Paul.

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Vijaykrishna
Topic Author
New Member

20 Dec 2012 21:20 #1075 by Vijaykrishna

Replied by Vijaykrishna on topic Suneye shading effects in 2012.11.30

Dear Paul,
Thank you for confirming this. Please let me know if i could do anything else.

Regards
Vijay

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Paul Gilman
Platinum Member

21 Dec 2012 00:08 #1076 by Paul Gilman

Replied by Paul Gilman on topic Suneye shading effects in 2012.11.30

Dear Vijay,

As a workaround until the January update, you can use Subarray 2 to import the Suneye shading data. On the PV Subarrays page, enable Subarray 2, and set the number of strings allocated to subarray 2 equal to the total number of strings in the array. That will cause the number of strings allocated to Subarray 1 to be zero. Click Edit Shading for Subarray 2, and import your Suneye shading data. (This models your system as a single array, but uses the Subarray 2 inputs to describe it instead of the Subarray 1 inputs. The issue with shading data only applies to Subarray 1)

Best regards,
Paul.

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