Battery

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randy
default load data

I may have asked a version of this question before, but it appears default load data provided by SAM does not align with start time defined by SAM help docs. Feb 2018 page 742 says SAM assumes January first is a Monday. Default load data I've pulled from SAM does not show a weekday (Monday) load until after 24 hours, suggesting SAM assumes January first is really a Sunday.
I apologize if this question has already been answered.

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toq1
battwatts input parameters

Where can I find the unit specifications/descriptions for the battwatts module in the SDKtool? I am interested in determining the options for the inputs for battery chemistry, dispatch, and meter position. There is no metadata listed describing the 0,1, or 2 options for these inputs.

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Giovani Dávi
Number of batteries

Dear colleagues,

I have a SAM model with PV and battery system. The battery system uses Lithium-Ion NMC battery type and cell capacity of 2.25 Ah. I select 'Specifiy desired bank size' with the following characteristics: 5 MegaWh battery capacity and 96 V battery bank voltage. I would like to know the number of batteries needed for this system.

Your faithfully,

Giovani Dávi

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lx9
Battery charging&discharging logic

Hello SAM support team,

Thanks for your dedicated efforts in designing and upgrading this software. I set up a simple PV-battery model and used storage dispatch controller to regulate battery behaviours. However, I am confused by the operational logic of battery in SAM, even after I read several use manuals mentioned in your website. There are three cases in my attached model:

Case1: Peak-shaving 1 day look behind. In the screenshot of case 1, I found between Aug1 and Aug10, battery system is not working even with sufficient SOC

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margol
PV+Storage DC-Coupled Clipped Energy Charging

Is there a way to model a PV+Battery DC-coupled system such that battery only charges from clipped PV energy? I'm trying to optimize for DC/AC ratio and battery size. Thank you!

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yunling.li
Isolated or independent PV-systems

Hello!
I'm doing a project about PV-residential/commercial taking Piura,Peru region as a reference and I'm analyzing how the project will change if enable battery; but I don't know how to set up that the battery only load from the system.
Also, I know the program simulate different projects that are conexion to the grid and when there are excess generation,these energy is injected to the grid. However, in Peru can not perform the same.

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g1ashok
Battery module execution errors

I'm trying to run battery storage module separately.

Having issues in running battwatts module using SAM SDK after setting the input parameters specified in battwatts module SDK. Can I run it as standalone module? meaning not running pvwatts module before this run. Any dependent input values populated by pvwatts that needs to be set?

Is there a way to debug or get more information on SAM module exec failure? Like missing input parameters, invalid values for the parameter etc? (ssc_module_log always returns null, is this call invocation correct?)

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randy
demand ratchet

Curious if ratchet feature in demand rates has been incorporated into SAM... did a search and see someone back on 7-28-2015 asked the question.

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chetanagrawal
chetanagrawal's picture
Compatibiity of various Inverters, Modules, and battery are important.

We need to also undertand that the compatibiity of various Inverters, Modules, and battery are important. Hence, a functionality needs to be built into the softwre which would see this integrations. I have used the PVSOL, and I have seen this there.

Also, regular update of database is required.

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tlalexander07
Time Series TOU Energy Charges

TOU energy charges are input based on AL-TOU Primary Substation. However, in the time series graphs the TOU energy charges are displaying at the highest rate in the wrong periods. I've checked the tables in the Electricty Rates and they are correct. I've attached the two screen shots here.

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