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victronenergy / dynamic-ess

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[VRM - Bug]: SOC too high, against forecast usage #114

Closed h2009 closed 4 months ago

h2009 commented 8 months ago

Contact Details

layth@layth.co.uk

VRM portal ID

48e7da8580e7

Country / region

None

B max

76.8

TB max

24

FB max

18

TG max

No response

FG max

unlimited

Battery costs

0

Buy price

.075 fixed

Sell price

No response

feed-in possible

no

feed-in control

None

What happened?

DESS, is charging the battery too much each day leaving excessive SOC in the battery. Forecast consumption seems too high as well but cannot see why the forecast is higher than expected.

When did it happen?

All the time

Screenshots

No response

pokeplayer2 commented 8 months ago

For me is always too low ;-) ... I like to have energy into the battery for the case that the grid is damaged, but you are right with the last changes is the battery usage lower as before.

MichaKersloot commented 8 months ago

Look at the settings -> ESS -> mode. If this is set to Optimized (with batterylife) that could be the cause. The results are better when set to Optimized (without batterylife)

h2009 commented 8 months ago

Look at the settings -> ESS -> mode. If this is set to Optimized (with batterylife) that could be the cause. The results are better when set to Optimized (without batterylife)

Afraid this isn't the case. Most days I end up with SOC of 50% left.

MichaKersloot commented 8 months ago

Ehh.. So your issue is the SOC is too low, despite there is enough sun forcasted? You better change the issue title i guess.

And is your system set to "without batterylife"?

h2009 commented 8 months ago

Hi No the SOC is too high at the end of each day. So the DESS is charging the batteries overnight by too much. Battery is not enabled. This issue started when the mini and max SOC for DESS was removed.

pokeplayer2 commented 8 months ago

I update yesterday to the latest Venus version and today is SOC also to high on my site:

grafik Min SOC is 10% and during the night is power cheap ... VRM portal ID b827eb6ff17f: grafik it is normally not needed to use power from grid in this case.

dirkjanfaber commented 4 months ago

Can you try again with running version 0.0.14 with firmware 3.30~7 (or above when released)? This adds extra strategies for not blaming the wrong forecasts on the grid all of the time.

Closing this issue. Please re-open a new issue if the problem persists.