Checking the measured data files

To check generated files in detail, you can use scrolling tables of monthly / daily / hourly values, as well as a set of control graphs for each parameter (time evolutions, histograms, etc.).

Time interval definition check:

The synchronisation of your data with the solar time is of great importance for solar geometry calculations, especially for the transposition model. Time definition checking is performed through the same tool as for Weather data files.

System data and running checks:

On the other hand, some specific graphs, usual when analysing measured data, are also available, which allow to use PVsyst as a complete tool for the presentation of data. These are:

• Input/output diagrams, which shows the system production as a function of the input irradiation, immediately gives indications about the misrunning days.
• Normalised performance monthly and daily graphs, summarising the system running performances in a normalised way.
• Inverter modelisation analyser: this graphical tool allows to superimpose the theoretical efficiency profile of a library's inverter onto real measured data, and then to interactively modify its profile in such a way as to make it match the measured data. Within the limit of the accuracy of the electrical measurements recorded on the field itself (DC input and AC output), this gives a direct measurement and parametrisation of the inverter's performances in real conditions.

You can then save the modified inverter for using it during the simulation process.