schatter

Dear Andre', I typically always check the imported values and ensure they match with SCADA values. There is no issue with that. Values such as Irradiance, ambient temperature and wind speed are fine. Also, the Eout Inv and Egrid values when verified using graphs and tables appear good. It's only that once the simulation is performed, I see a significant amount of Egrid data is lost and is shown as "Inverter loss over nominal inv power". However, I am not sure why that would happen and we are modelling the inverter correctly. Also, I am not importing any PV voltage or current values or any other values Is there a particular reason why PVsyst would show zero values for particular hours of the day in the CSV file that we review once the simulation is done. Please find attached loss diagram where you will find a significant amount of data is lost over nominal inverter power. Thank you for your help, Saurabh Sample result file of measured data analysis

Dear Andrew, I am currently trying to run a Measured data analysis using PVsyst V6.31. I am feeding measured SCADA data for a typical day (24 hr data) which is in 1 minute intervals using the post processing method. The Issue that I am facing is once the simulation is performed the EGRID value that I get is much lower than what the plant has produced measured on the meter for the day. There are some values on the CSV file generated after the post processed simulation that simply show a zero value, when I know there is a production during that hour. Not sure if PVsyst accounts zero for any clipping hours. The plant is a 10 MWac plant and does experience clipping for some time in the day. Please let me know if you can provide any feedback. saurabh