Performance model IEC TS 61724-2 and IEC TS 61724-3

[cloudwalker]

Hello everyone,

I have a question regarding the use of PVsyst for performance modeling in the context of performance testing (PPI and EPI) as described in the standards IEC 61724-2 and IEC 61724-3.

Can PVsyst be used to generate a performance model that is suitable for performance testing according to these standards? Does anyone have practical experience with this?

Is it possible to use 1-minute measured data in PVsyst for this purpose or what is the minimum data resolution supported for imported measured data?

Thank you in advance.

[Michele Oliosi]

Hi,

It's definitely possible.

Currently the prerequisites for the EPI test are not very strict. It is about comparing total expected energies with measured ones, filtering for various contexts, with an hourly aggregation of measurements. PVsyst will generate a time series of results with various intermediate variables, that can help with filtering (e.g. for constrained periods). This time series can easily be compared with the measured one.

For capacity testing (PPI), depending on the version of the standard -2, ed. 1 or 2, it is more or less easy to do. Ed. 1 should be straightforward. Ed. 2 has minute simulation as a prerequisite. Currently, PVsystCLI or PVsyst + batch can help implement a batch of 60 simulations (one for each minute in the hour) to mimic a minute-resolution simulation. This is a bit cumbersome, though.

Luckily, we are working on PVsyst 8.1 which will simulate in minutes as well. The version is well underway (and the minute simulation is confirmed to work). This will make the ed. 2 capacity test straightforward as well.