Initial situation:
DESS switched off
Battery completely discharged to SOCmin overnight
AC loads are supplied from the grid
I activated DESS in green mode approx. two hours before the start of solar production.
Despite the green mode, DESS did not plan to charge the battery first, but to sell all solar production to the grid first and only charge the battery for the first time in the evening, towards the end of solar production.
That looked more like planning for Trade Mode, not for Green Mode. In green mode, shouldn’t the battery be fully charged first before selling to the grid?
This seems to be a bug after including some changes by victron yesterday.
My DESS (green mode) plans no charging since yesterday in the evening. Battery is at SoC 78% at the moment.
It seems to be related to a constant sell price. This bug got introduced together with a fix we did yesterday afternoon. While we do check a lot of combinations before deploying changes, we simply can’t check all. And sometimes things get overlooked.
We’ve just deployed a fix for that, which should take care of charging the battery first again when in Green mode.
@grua it would be nice if you could re-enable Dynamic ESS on your system and check.
@netzweg This was caused by an unexpected combination of circumstances on your system, which would have resolved itself when the new schedule (at the next full hour) would have started. But by that time, you had switched the system off again. We will need to make some changes to better cope with this for the future. If restrictions have been set, they should always have the highest priority.
Can you re-enable DESS just before the full hour and leave it running?
@netzweg Further info after consulting a colleague. If you look at all the data in your screenshot, the battery was just 300 W off covering the AC Loads and the PV was going into the grid. So it was really trying to keep to the restriction. The system always be slightly off, considering changes in loads.
It was wrong in not putting the PV into the battery, while being in Green mode, which it certainly would have started doing in the next hour.
I happens quite often that I sell to the grid instad filling up my battery. Thats the reason why I turned it always off again when I see strange behavoir. In addition we have 2 EV and a heating pump which makes the usage forecast quite difficult I guess. Any progess on these topics in better forecasting whith this heavy loads? I’ve go-e wallboxes btw…
Is there any more data needed from me to possibly track theses issues down?
Hi,
Here also the system wants to deliver energy at the grid.
I can not understand why, I only want to putt power on the gris when the battery is full.
Green mode activated.
Today again.
Green mode activated battery not full (<50%)
I do not understand, this is not green.
Is there any way we get a slider with a minimal soc for grid selling?
Say I set this slider to 85% and the prices are higher than a set price the system sell.
That would be very nice
ID:
c0619ab3e975
In my opinion, the poor consumption forecast also plays a role here. Unfortunately, this is not apparent from the screenshot. If the consumption is not calculated accurately, the energy to be stored cannot be calculated accurately either. Let alone the best time to charge the battery. Please take a look at it when you get the chance.
