Battery

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EngineerStudent
Load Preference battery

Is it possible you can determine which load has priority on others?
For example: You have 1 battery 40% full and 2 loads, one important and one not (like in a hospital: life save equipment and lights) So when the battery can't provide both loads, can you choose which load has priority?

Thanks

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randy
battery-only

Noticed that when zeroing out PV costs in order to model battery only, that balance of system & install costs do not change. BOS/install for battery-only appear to perhaps become disproportionately large and ruin the economics/NPV that may in fact be economical for batt only?

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stewartcharlie.11
System drawing from grid when enough power is available in battery

Hi There,

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dwilliard
Modeling (only) Batteries

Hello,

I am attempting to simulate a project where only batteries are present to mediate the load. However, when I run a photovoltaic system with 0 kW DC sizing, the load still flows through PV prior to flowing through the battery and then the grid (in essence, the PV is still disrupting the system- this causes what looks like the PV to charge the battery, not the grid).

Does anyone know how to (completely) rid a project of its generation aspect? Any help is much appreciated!

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Godwin Ndisengei
Residential Solar Lease

Just installed SAM to hopefully support my financial modeling for a zero-down solar portfolio - tax equity finance with partnership flip... Can SAM model this, can someone kindly assist with most efficient way to go about this in SAM.

Some key details...

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Kleinp123
Modelling battery with no PV system

Hi

Is it possible in SAM to simulate a battery system only (ie no PV) for peak demand reduction and arbitrage?

Regards
Peter

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giovanidavi
System losses

Hi Paul,

I have simulated a PV-battery system in SAM. After simulations it generates as a result the following losses: AC inverter efficiency loss (3.1%), AC connected battery loss (1.25%) and Inverter power consumption loss (1.2%) and System energy losses (17400 kWh/year). In addition, the Tab Losses in the results section give some compound losses: soiling (5%) and module (7%).

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bruna
bruna's picture
Send data to Excel

Hi,

When I try to send the data to excel, it goes from a value that's suppose to be 1.0 to 100.000. Also, when I check the battery data and try to send those to excel, they come all wrong, it's suppose to be a value 1e^-16 and ir goes 1e^-11 or 1e^-12, it doesn't have a pattern.

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Izabb
Subarray voltage mismatch calculation requires more than one subarray.

I'm trying to do a simulation and it throws me the following message: The calculation of subarray voltage mismatch requires more than one subarray. Check your entries. The pvsamv1 simulation failed.

The simulation is about the article Subarray voltage mismatch calculation requires more than one subarray.

The idea is to replicate exactly this article, to learn and to know in depth the use of SAM

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Macgyver
PPA Single Owner (Utility) - Storage - Enable "Charge from Grid"?

Hi,

I am using the following SAM: Version 2017.9.5, 64 bit

I am using a PV (Detailed) PPA Single Owner (Utility) model, with Redox Flow storage system.

Under "Manual Dispatch Model" it displays that "Grid charging is disallowed in the front-of-meter charging models, since the model assumes power can only be exported to the grid"

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