Difference in optimal capacity and peak power flow

[sanketpuranik]

I am trying to find optimal capacities for investment in PV and wind power plant. I see that LCOE is less than feed-in tariff so Ihave set maximum capacity for each power generation sources. As obvious I get PV as the cheapest option with maximum set limit as optimal investment. However looking as scalar outputs, i see that there is difference in optimal capacity of PV plant and maximum power flow for the same. For example if i set maximum limit of PV to 100 then i get optimial capacity as 100 kW and maximum power flow as 81.2kW! I dont know what the issue is. If i set maximum capacity as 500 kW, i get optimal capacity as 500kW and maximum power flow as 406 kW.

The ratio between maximum power flow and optimal capacity is alwasy 0.812. what could be the reason for this?

Note: in the schema attached please ignore 'DG Incomer' Asset it is not being modelled but appears in the schema.

scalars.xlsx
timeseries_all_busses.xlsx
energyProduction.csv

[Bachibouzouk]

Hello @sanketpuranik, Thank you for your bug report. Just to be sure, you are simulating using terminal MVS tool and not online EPA or open_plan interfaces right?

It would be easier for me to reproduce your energy system locally if you provide all files in a .zip file.

It seems to me that as you provide a file of the PV production, this sets the maximal power flow (probably the maximum of this normalized file is 0.812). As the LCOE is less than feedin tariff, then the system invest massively into PV up to the limit so your maximum capacity is always equal to the optimal capacity. The flow you get depends on the normalized flow file you provided and this optimized capacity.

I hope it helps, let me know if not