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Importing high-resolution (1 minute) meteo data for a leap year - limitation?


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Posted

I recently imported high-resolution (1 minute) weather data (GHI, DHI, ambient temperature) from a BSRN station for the year 2020, which was a leap year. This was to estimate sub-hourly clipping losses.

The CSV file has 527040 lines of data, which corresponds to 366 days of one minute data, starting at 2020-01-01 00:01 and ending at 2021-01-01 00:00, with end-of-interval convention.

However, the CSV import gave the error 

"Error while reading date 31/12/20 at 23h02
Limitation of the custom file import at 12 months."

The resulting MET file ends at 23:00 on the last day of the year, so in the end all is good and it won't make much difference to the simulation. However I am not sure why this error is thrown, since the data is correct and the "limitation" should not be there.

Posted

That warning might be a bug, would you be able to send your .csv data and .MEF conversion file to support@pvsyst.com ?
Did you read the dates on file or use the sequential dates option?
But in any case, the PVsyst convention is that 31/12/20 at 23h00 corresponds to 23h00-24:00 so your file should indeed be complete

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