Representing unavailability of part of the system

[Mojailat]

Hello,

I'm currently running a plant that has 168 inverter, 10 of those inverters are down for an indefinite period. I want to run three scenarios where:

1. The inverters are fixed at the beginning of the reporting period (Which is the 1st of Dec NOT the first of January)
2. inverters are fixed after 3 months have passed on the reporting period
3. inverters are fixed after 6 months have passed into the reporting period. 

My understanding is that PVSYST define unavailability as a period where the WHOLE system is unavailable for a defined period of time, is there a way to do it to take into account that certain portion of the system will be unavailable for a defined period of time?

We have tried to do it on stage i.e. reduce system size in that period but my concern is that it effect that Annual Forecasted PR as whole.   

Thanks

Edited December 13 by Mojailat

[dtarin]

The best way would be to do everything outside of PVsyst and create manual reports. However, if you want or need to do it inside PVsyst, there are not many options. One way is to adjust the MV Ohmic loss for that subarray. Set an MV ohmic loss for just that subarray to like 155%. You will need to adjust the wire section size most likely to get the length of wire to a permissible length (there is a character maximum). This example was three symmetric blocks, I didnt fine tune the percentage loss, it is approximately 1/3 loss. Define the ohmic loss as typical for the other subarrays. 

[Linda Thoren]

Dear Mojailat,

Indeed, there is not yet a straight foreword way of defining unavailability per sub-array. This use case has been identified and it is on our roadmap to add this function for a future version, though it will not be available in the near future.

Kind regards and thank you for highlighting that this indeed would be a valuable feature