Hello SAM Team!
Despite knowing that SAM does not (yet) model off-grid systems, I consulted on the forum some tips that were answered to try to model such systems using the current version (links:
sam.nrel.gov/forum/forum-general/3182-photovoltaic-plant-storage-best-option-for-dispatch-model.html,
sam.nrel.gov/forum/forum-general/2998)
In "Grid limits" I set to "Enable interconnection limits" with 0 kWac and I entered a curtailment array with 0.0000001 MW at all hours of the year, in an attempt to reset the interactions with the network.
In addition, in "Electricity rates" I set "buy all / sell all" with an entry with a zero sale rate.
I am having trouble interpreting the results, since the values of import and export of energy from the grid / to the grid (considering, respectively, how the power of the diesel generators drive and wasted energy) are not the same in the hourly simulations ( for the first year) and lifetime (considering the first 8760 hours).
For example, data from the first year account for "Electricity to grid" null but in Lifetime data, it is 14532 kWh for the first year.
I'm sending my file
. I am using the generic system model.
Can you please help me understand the results? What would the system energy be? Photovoltaic generation (in my case, that I added the matrix in "Power plant") and the battery? What energy flow does it account for?
In addition, does the year that the SAM simulates consider the 2020 working days and weekends calendar? Or rather, what day of the week is the first day of the year for the simulations?
Thank you!
Sincerely,
Luiz Pereira