Sudden Load Profile Spikes After Importing File

[Ady]

Hello,

I defined a custom load profile as per the PVsyst template and imported it into PVsyst. However, after importing, I noticed some unexpected sudden spikes in the preview graph (screenshot attached, seem happen at 00 hour).

• The spikes do not exist in my original input file.

• They only appear after the file is loaded into PVsyst

• The rest of the profile seems to follow the expected trend.

Could you kindly advise what might be causing this?

• Is it related to file formatting, delimiter issues, or data resolution mismatches?

• Are there any best practices to avoid such spikes during import?

Any guidance would be greatly appreciated.

[Linda Thoren]

Hello,

Does the peaks only appears in the preview graphics or is there in issue with the actual values in the input? Does the Annual need and the CSV source file to the left of the graphic correspond to the original file? 

You can possibly try to run a simulation and export the results to verify that the simulation is made with the correct values

[Ady]

pls see below screen shot, the spike seem like happen at the graph...

 

[Linda Thoren]

I notice that you have a warning message indicating that your file contains data for the 29th of February. Are you using weather data for this specific year (a leap year) or a generic year ? Try to take out the 29th of February from the dataset.