DESS not working at all

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bozydarstarzyk asked Jan 17, '24

DESS not working at all

Dear Community,

I've been testing the DESS system for a few days now, using it in auto mode. Unfortunately, it's not functioning as expected. In fact, it seems not to be working at all. My electricity tariff is as follows:

Additionally, here's how my battery charging and electricity usage chart looks:

Previously, I used a different solution for energy consumption optimization (it wasn't a Victron solution), and the chart looked like this:

This makes sense because the independent system seemed to charge the batteries when the electricity was cheaper and allowed me to use the stored energy when the electricity prices were higher. Why then is your DESS not doing anything? The only activity I've noticed is the State of Charge (SOC) changing from 10% to 80%.

Thanks in advance for your help!

ESS dynamic ess

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Answer 1 · 2024-01-19T13:53:14Z

Dirk-Jan Faber (Victron Energy) answered · Jan 19 at 01:53 PM

I see that you are running version 3.13. Can you switch to the latest candidate release firmware?

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bozydarstarzyk commented · Jan 19 at 03:45 PM

How to do it?

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Dirk-Jan Faber (Victron Energy) ♦ bozydarstarzyk commented · Jan 19 at 03:59 PM

Via the remote console navigate to Settings -> Firmware -> Online updates -> Update feed And set that to "Latest release candidate". Then Check for updates and update.

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bozydarstarzyk Dirk-Jan Faber (Victron Energy) ♦ commented · Jan 19 at 04:13 PM

Thanks!

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Answer 2 · 2024-01-21T08:40:21Z

bozydarstarzyk answered · Jan 21 at 08:40 AM

Thanks, Victron, for letting me charge up to 150% of my battery capacity! :)

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Dirk-Jan Faber (Victron Energy) ♦ commented · Jan 21 at 08:33 PM

Sssttt. That is using the hidden battery capacity. :)

And more seriously that seems to be a missing cap on 100%. I'll take a closer look at the cause tomorrow to check if that is indeed the case or something else is causing it.

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Answer 3 · 2024-01-21T20:40:24Z

bozydarstarzyk answered · Jan 21 at 08:40 PM

Another issue...

I have sent today to the grid exactly the same amount of kWh, as was generated by the sun. But its winter, and I had:
a) high enough consumption to use it, and
b) battery space.

Why?

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bozydarstarzyk commented · Jan 22 at 08:00 PM

Still the same... I'm not happy about it.

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Dirk-Jan Faber (Victron Energy) ♦ bozydarstarzyk commented · Jan 23 at 07:45 AM

This has to do with blocking issue #2, described in this post: https://community.victronenergy.com/articles/256073/dynamic-ess-on-beta-vrm-part-4.html

As soon as we have that sorted, this should no longer happen. Meanwhile you can set the checkbox for "Can you sell energy back to the grid" to no.

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