Battery

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loyolacyriac
loyolacyriac's picture
Battery not operating at full power

Hello

Kindly look into the below

I am simulation a 200MW 200MWh PV + DC coupled Battery Storage
Application : Capacity market - Dispatching flexible capacities over the day

A sample case for a typical day
4AM to 5AM : Charge battery to Max SOC (1C charging @200 MW)
5AM: BESS system is ready and waits for any dispatch command

Say 8AM, 01PM, 07PM, 09PM: Dispatch commands (each 0.25C)
Remaining time - normal PV operation

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Jorunn
Battery is not running in simulation

Hi,

I'm new to SAM so bare with me. I'm trying to model a PV+battery system using my own load in the simpler version PVWatts to begin with, but somehow it doesn't seem like the battery are used in the simulation. The battery do not charge from neither the PV nor from the grid and moreover it doesn't cycle at all in the simulation.

I suspect that some of my parameters are wrong since I also get a negative NPV.

If someone could help me with this I would be thankful!

I'm attaching the file for the simulation that I'm running.

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zzx961799053
Battery storage of PV utility

Hello everyone,

I'm wondering if there is any way to add Battery Storage in PV utility? I want to know the impact on plant cost if storage is required.

Thank you!

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ailinea
Plots of PV+battery results

Hello everyone,

I am new to SAM and have to work on it for a school project.
I was wondering if there is any way to view my results like in the plot attached, so that I can clearly see the contribution of PV, battery and grid to the actual load ? And not each curve on its own like in the "profile" or "Time series" tab of the results.

Thank you

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soular
Error running battery-only system

This is my first time trying to run a battery-only system. There doesn't appear to be a no-power-plant option. I'm using 15-minute timesteps for load and for generic 0 kW PV system, with output for PV set to 0 in all intervals. Here's the error message:

fail(system_capacity, positive): 0
Simulation cashloan failed.

Any idea what's going wrong and how to fix it?

Thanks

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REV
Battery-related elements of system costs

Hi,

Have a couple questions on battery-related elements of system costs. (Using PV detailed; PPA single owner model).

Is battery-related i) installation labor, ii) installer margin/overhead, and iii) engineer/developer overhead reflected in overall system cost assumptions? Or do battery-related system costs assumptions reflect only the direct equipment costs for battery storage at present?

Also--are battery-related O&M costs reflected in assumptions on O&M?

Many Thanks,

REV

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robdenexter
robdenexter's picture
How to use actual solar data

Dear staff,

In order to model a battery case, I would like to know if it is possible to use an actual PV-generation profile instead of a simulated profile from SAM. Thanks for your kind assistance.

Rob den Exter

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REV
Battery, Demand Charge?

Hi SAM team,

I'm a first-time poster on the support forum, but have used SAM quite a bit the past few years--many thanks for the spectacular tools you've created.

Question on battery themes--is there presently a way to include a demand charge, when modeling a PV + storage system in SAM?

Thanks & Best,

Brett

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randy
forecast for battery

I continue to struggle with an appropriate dispatch model for a battery in SAM. Day-ahead assumes perfect knowledge of the next day (not reasonable) or Day-behind which is described as worst-case naive control (from Overview of Automated Dispatch Algorithms in SAM, N DiOrio, Aug 2017).
So my choices seem to be perfect-case versus worst-case. Does it make sense to run economics for both of these dispatch scenarios, and then choose a result between the two?
Randy

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randy
other models

Wondering what NREL thought of the EPRI Storagevet.com modeling tool? Comparable to SAM? Better/worse? Pros/cons?
Thanks.

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