Paulo Oliveira

Greetings, I'm doing a project and I've found out a bug on the PR calculations. In the PVsyst Report attached the PR average for the first year is 80,9%PVSyst_Report_Fortissue 2,73 MWp (JA 540W).zip, when in fact the calculations are wrong the correct value must be 83,5%. I've downloaded the User Hourly and checked the values in a excel PR Bug excel file.zip, all figures are correct, only that PR percentage. This is the first time that this has happened on the hundreds of projects that I've done.

Hello, I'm doing a grid-connected project on PVsyst 6.70 and this is the first time that I encounter this error. On the advanced simulation and generating the output file I normally use 5 defined variables: 1- Horizontal global irradiation; 2- ambient temperature; 3- effective Global, corr. for IAM and shadings; 4- Energy injected into grid; 5-Performance Ratio. As mentioned before never had any problems using these parameters on the .CSV file. The problem that I have now is some abnormal values on the PR results, 13 PR values with a -1317.8 which seem not to correct. see bellow: PVsyst v6.70 File File date Description Project Desicor_1.PRJ 07/05/18 12h06 Desicor_1 Geographical Site Brunheiro_PVGIS_SAF_1998 to 2011.SIT 07/05/18 12h06 Brunheiro Portugal Europe Meteo data Brunheiro_PVGIS_SAF_SYN.MET 08/05/18 09h59 Brunheiro Synthetic Simulation variant Desicor_1.VC3 07/05/18 13h53 320 kWp Simulation date 08/05/18 10h00 Simulation: Hourly values from 01/01/90 to 31/12/90 date GlobHor T Amb GlobEff E_Grid PR 27/01/1990 07:00 0.1001 9.1302 0 -0.008 -1317.8 16/02/1990 18:00 0.1001 11.6 0 -0.008 -1317.8 14/03/1990 06:00 0.1001 8.5198 0 -0.008 -1317.8 10/04/1990 19:00 0.1001 21.67 0 -0.008 -1317.8 20/04/1990 05:00 0.1001 7.5902 0 -0.008 -1317.8 21/08/1990 05:00 0.1001 17.95 0 -0.008 -1317.8 01/09/1990 19:00 0.1001 24.2 0 -0.008 -1317.8 20/10/1990 06:00 0.1001 15.67 0 -0.008 -1317.8 27/11/1990 17:00 0.1001 13.39 0 -0.008 -1317.8 28/11/1990 17:00 0.1001 11.37 0 -0.008 -1317.8 12/12/1990 07:00 0.1001 7.8202 0 -0.008 -1317.8 22/12/1990 17:00 0.1001 15.68 0 -0.008 -1317.8 23/12/1990 17:00 0.1001 12.74 0 -0.008 -1317.8 Can you please help me solving this?