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8-8-24 and 9-8-24 Last night and today DESS ensured that my 2 Multiplus II installations did not discharge as planned, but the battery was charged during peak times, so I turned DESS off, it looks like a system error.
Everything works as before, I close the question.
Dear all,
The abnormalities in DESS should be resolved now. The cause was a problem with how DESS passes the SOC schedule to VRM.
If you do encounter another issue with DESS, please add your site ID and a screenshot of the DESS schedule graph, which makes it easier for the team to debug.
In my case, DESS inverts to grid every day ending with 20% (low soc). But I have a mix of Enphase and MPPT RS. DC PV cannot be inverted to grid by the control loop during low soc state and will be force charged to battery.
But soc recalculations are now only done every hour? Once DC PV has charged to 23% soc the system will immediately start to invert back to target soc of 20%. It repeats that until the hour passes and if soc accidentally has 21% the schedule will start with 21% and all is good.
This is an old problem for me which I have fixed with a node-red flow. But it only needed to fix 15mins, not the full hour if I remember correctly.
I think it also explains some of the issues that I am reading here. Flipping the switch and watching DESS using an old forecast ?
site id c0619ab38510
discharging, soc is 12.6%, target soc in remote console is 28%, DESS schedule is “do nothing “.
not possible to include pictures and graphs…
Your current setup has buy and sell price equal to each other and no solar. As a result, DESS schedules to use your battery only minimally. It will charge in 2 hours, at the lowest price point, so it can sell that energy at the highest price this evening.
What do you think is odd with DESS's plan for your site today?
This morning for example, it should do nothing, but it is discharging full speed. The SOC was 12.6% and the target SOC was 28% in the remote console. So the action was drifting the SOC away from the target....
That's the issue, it starts out of nothing, it is ramdom.
I turned DESS off right now, this is going nowhere.
@mableeker How accurate is your 16:40?
When looking at the debug data, I see that you (briefly) disabled Dynamic ESS between 16:36 and 16:38, which resulted in that peak. If you didn't do that switching on purpose, please do let us know.
For easier debugging and the ability to putting screenshots in reports, please create a report on the new forum when problems occur. (See https://community.victronenergy.com/questions/319632/victron-modifications-community-has-now-moved.html)
Not optimal yet unfortunate. This morning I switched off DESS as I would like to use excessive AC coupled PV load to charge the battery. ( this is done more often manually as the AC-Coupled PV - feed in excess doesn't work for me, anyhow complete different topic)
I did switch DESS back on and it started to discharge immediately to grid with maximum output. Obviously there was a target soc much lower then the soc. This is new behavior since last week. Before this this didn't occur. You could switch DESS off and on without immediate heavy charge of discharge issues. Thanks
c0619ab2ef52
@Dirk-Jan Faber (Victron Energy) forecast ensured the battery charged at the lowest rate but “has changed its mind” and is now selling (16:09 from 92% to 89%). Have not touched the switch. So unless Barbara is working on the other issue I reported, this behavior is not correct.
I had the same experience, yesterday after 21:00 it started to charge instead of discharge. I turned DESS off for the day. Enabling it today it started charging during peak times again.
Same experience here with "Optimized w/o battery life". Did not unload at the peak yesterday 22.00, but started next day loading at relatively high price, followed by unloading at the same price a few hrs later. Than started charging during peak times with a strange battery forecast.
I experienced the same behaviour. I have reset the whole system and re-added the system to VRM. Still it is acting very strange. I have disabled DESS for now.
Same here. When I look at the target SOC in my system, it is not the same as VRM. It is 57%, and that's why it is acting strange. at 16h it was 87% for some minutes (the right value in my case), so the system started charging at the lowest price. But 7 minutes later, the target soc gets adjusted to 57%. It started happening yesterday evening, and now again.
@Dirk-Jan Faber (Victron Energy) @mvader (Victron Energy) is there a bug going on? do we have to disable DESS for the weekend?
This is exactly what is happening here as well. @Dirk-Jan Faber (Victron Energy) Help! Totale paniek hier! ;)
Het laden lukt me wel (Min SOC naar 100% of Keep Battery Charged), maar zorg ik ervoor dat er alleen ontladen wordt bij bijv. hoge prijzen?
Thanks. Took some time to get my internal battery charged. :)
Our DESS system is also acting up strange. The planning with the coloured bars looks ok. But for some reason it is using the wrong SoC target when it should be charging or discharging.
Same issue here, hopefully there will be an explanation or fix soon :)
here this the same..
The problems are since Thursday evening (gmt). I've send screenshots of various sites to the development team but due to vacation I don't expect a respons until Monday. Best is to switch off DESS and come back on Monday afternoon.
I must say I am very puzzled; there is no code change in https://github.com/victronenergy/dynamic-ess.git the latest release is from July 2nd. Can anyone point me to the repo which might be responsible for this issue? https://github.com/orgs/victronenergy/repositories?type=source Or are there also closed-source repos?
I switch off DESS right after the most expensive hour and on again right before, otherwise the batteries are charged when the price is high regardless there is good solar production.
Same problem here, the forecast seems to be okay, but it does not adhere to it an seems to be charging/discharging quite randomly.
Morning! mijn Dess doet ook heel raar
ontladen op het hele uur begrint hij voor 10 minuten te ontladen en op het hele uur:10min begint hij volop te laden voor 10 minuten
example:
planning was ontladen in de ochtend tot 7 uur
daarna 10uur tot 15 uur laden
dit gebeurde:
1:00 ontladen tot 1:10
1:10 laden tot 1:20
2:00 ontlanden tot 2:10
2:10 laden tot 2:20
dit patroon herhaalt zich tot 8:20
daarna schijnt het beter te worden maar niet zoals planning
Morning! for english:
my Dess is also acting very strange discharging on the hour it starts discharging for 10 minutes and on the hour:10min it starts charging fully for 10 minutes example: planning was discharging in the morning until 7 o'clock then 10 o'clock to 15 o'clock charging this happened: 1:00 discharging until 1:10 1:10 charging until 1:20 2:00 discharging until 2:10 2:10 charging until 2:20 this pattern repeats until 8:20 after that it seems to get better but not as planned
Morning, Same unexpected behavior here since last week indeed. Switching back to manual.
It should discharge at 0600 to 0800 this morning also according the schedule. What it did instead was going with 12kW charge to a target SOC which doesn't make sense. Instead of discharging it was charging.
I checked DESS with Node-Red and the Normal one. The Node-Red implementation looks okay, the Normal one looks strange with loading and unloading in the same hours.
So I decided to switch back to Node-Red and it works as expected.
Unfortunately I can not upload images or files because that results in an error, but that must be unrelated :)
Update 13-8: Node Red seems to have the same issue. The planning looks good, but the execution is bad.
Hi, also have issues with pasting/inserting images here )-:
Is indeed not related.
I think I'll start with Node-Red as well however is not for common DESS users. Looking at Node-Red, some basics needs to be understood before acting. Will give this a try and preferably DESS from Victron should work perfect.(-:
Same problems here. Tried a firmware update to 3.41 but no avail. Switched DESS of for now because yesterday did cost money because selling and buying on the wrong moments.
Has anyone heard anything from Victron yet? It is now day 5 of manually charging and discharging.
Nope, nice weather en Holidays :)
remember 19:00 our discharge time until 22:00 our
What Venus OS are you on? Since Venus OS 3.40 I lost manual control to buy and sell.
So you are forcing to sell by turning on DESS. Not by choosing sell mode in Venus OS. Because I'm also on beta 3.50~13 but there also is no setting to buy or sell.
That's right, in this newer OS the buy and sell buttons have been removed, which is a shame. I turned off DESS and increased and decreased the DVCC voltage of the battery to achieve the same result.
I have the same issue regarding selling with DESS. At high prices it refuse to sell. It has been a problem the last days. Before I could force to sell in the old Venus update. But this option is removed, sadly. I would like to make a schedule for selling instead. Like schedule charging.
I used the grid setpoint to force a discharge tonight (in my case, set it to -4000W), worked perfectly!
By now also the price prediction is not available anymore, but I guess this has to do with DESS being disabled for >24h now...
It would be nice if we would hear anything from Victron staff about this problem!
I thought that running DESS Node red would fix the issue. The prediction in Node red looks good. But now the system is charging with 12000W from the grid in a battery on 36% SOC where the target SOC is 26% in Node red. I have tried Green Mode, but same issues.
In the Remote console it shows Target SOC 48%. Don't know where that is coming from, but I guess that the problem is over there.
All I can do is switch it off and wait for a fix.
Probably related I get the following error: Gateway - DESS error code: No matching schedule available. This error can be found in the error log where I see a list of them starting on the 3rd of August. They get solved in sometimes 30 minutes but also 14 to 22 hours.
@Harold Halewijn Did you get any reply from Victron? I think it is a little concerning that they do not respond to this topic whatsoever. Many people use DESS an a lot are on holidays and maybe not seeing the issues so they loose a lot of money. Of course we all need holidays every now and than also our Victron friends but all at the same time? @mvader (Victron Energy) @Dirk-Jan Faber (Victron Energy)
Yes, people have been looking into it and I just received a message from Dirk-Jan.
They are working on it.
As Harold mentioned, we are working on it.
About an hour ago we pushed out an update that should fix the cause. We are monitoring that closely.
Also sorry for the delays. With the vacation period, there are fewer people around and not everything gets picked up as quickly as usually.
I have just re-activated DESS and "DESS error code: No matching schedule available" alert got triggered.
double checked timezone settings, location settings and region NL config in the DESS node. All good.
Ah well.. something to worry about later I guess.
For this update, does DESS has to be on? How do I know I received the update?
The system is still not working as expected.
I tried to upload a screenshot...
I am using green mode, and the system is putting power on the grid at the moment.
12:41
They are working on it.
Temporarily disable Dess until Victron people give the green light.
After the update it looked promising. The prediction was selling from 19.00 - 21.00 hr (highest price of the day). Then it shifted to 21.00 - 00.00 hr. After selecting trade mode it shifted back to 19.00 - 21.00 hr. This is not good.
I have the same and to me this looks OK so far. In trade mode: From 19.00 to 21.00 full battery to grid. Followed by battery to consumption until 00.00
(It's a pity we can't paste screenprint in the message.) Get an error message: Parsing response failed when inserting or pasting. Is a different topic though)
Hi, i still see suboptimal schedules for tomorrow and also later this evening GRID to consumption with a battery SoC of 58%
Here a target soc of 100% (when soc is 99%). So no discharging at 19.00 hr. I turned DESS off again.
Hi Barbara, thanks for looking at my site. There was something strange tho. I turned on balancing. Then the sell prediction went away and instead of that, VRM decided to do grid for consumption for a couple of hours (although soc is at 100% and I have enabled charge battery from grid restrictions on). And the predicted discharge disappeared. After I turned of balancing, then discharging from 18.00 - 23.00. But I don't like that because my SOC is set to 30%. And it looks it wants to discharge to 30%. Target SOC is at this moment ...
Hi, when you turn on balancing, and balancing is 'due', it will use the grid for consumption to keep your batteries balanced at 100% for some time.
My advice for a valid test would be to not toggle battery balancing on and off too much. So to turn balancing on and give DESS some time to balance your battery and then get back into trading energy.
Here it's still not working little after 9 pm it's start charging from the grid. Turned dess off again..
Same here, still not working. I turned it off as well.
Would love to hear your feedback after it has been switched on again.
Also turned it off. Correct schedule was there. But schedule was not respected.
Seems like they have removed the manual possibilty to Sell/Buy in the Remote control. The DESS in the latest version do no sell in peak price 0,13 Euro in morning when I have 70% battery and full day of sun is coming with 0 Euro prices.
I just checked your site, and see that DESS is planning to sell energy from your battery this evening, at the highest price. I see your concern about this morning, but considering battery costs and the peak price only being there for one hour, DESS favors the point this evening.
Would be nice if DESS calculated for that also or if we could chose a DESS SOC level like 50%. Under that level the DESS is not allowed to sell. And then you still have the normal SOC.
System is indicating "Het balanceren van de accu staat voor vandaag gepland." for multiple days.
Even when I disable this in settings the message will not disappear.
We will correct that when the setting is switched off, it stops showing the message.
I have 2 installations, and both turned on DESS again, but while the purchase price is high and the sun is shining, it just charges the battery at full throttle. Unfortunately, I'm back to manual control. I now miss the buy and sell buttons quite a bit, I would like to see them return to the Control menu.
Uploading images is still not possible
Cannot explain what is different from last week but for me VRM DESS is working and the schedules are loaded.
If you check on the dbus you can see new schedules are not loaded when you flip the DESS switch back on. The timestamp from sched0 is old (in my case from earlier attempts yesterday).
I turned the DESS switch off AND I turned DESS off in settings. Waited a bit and turned it all back on. That did result in a current timestamp for sched0 but the schedule still did not contain the current soc causing it to charge at full speed. I injected restrictions into the schedule to prevent it from charging from grid and waited for new values. When the hour passed it started charging again as sched1 did not have the restrictions. Corrected that, continued the wait and a few mins later new schedules were loaded with the correct values.
I have various flows to correct some things that are apparently unique to my system so I know a thing or two about overwriting restrictions or strategy if needed and the need to reapply a few times to make it last. Up till last week I could turn DESS off and on easily if needed. Something must still be wrong. Update frequency ?
Glad it works now as Victron staff is not the only one taking vacation. Simply switching back to ESS is not the answer for everyone. In my case people are using the EV chargers.
Turning off DESS is the settings and waiting a while and then turning it back on has a good result for me, now let's see if it behaves as planned again. Unfortunately, I also have to charge an EV.
Hey, my system is still not working as inspected.
Soc is 17 procent, price is low and not charging.
Also last night the system was not using the battery, but using the grid instead.
Can you please advise?
Thanks
Jacco
I gave up and disabled DESS, alternatively in the settings, ESS I created a schedule for charging and discharging. Unfortunately I can't show any pictures, that still doesn't work, the picture presenter is also on holiday! :(
My site didn't discharge yesterday evening at the scheduled hours. So I played around with Node-Red but could not force it to discharge. At the end I downgraded to Venus OS large 3.34. Now I have the manual buttons again to charge and discharge. I will see what VRM will do tonight. It predicts it will discharge from 19.00-23.00 hr.
As you are running in Green mode (which only sells excess solar), I am fairly sure it won't start discharging this evening. The graphs are wrong in suggesting that it will discharge.
We are looking into why the graph is showing the planned discharge.
What precisely do you mean with excess solar. More solar than what?
With Dynamic ESS in green mode, the solar that is not used for consumption is going to the battery. Only when the battery is fully charged, the solar will be sold, not before that. It won't actively sell from the battery.
@Victron
Can it be that the problem is that there is no Target SOC in the Cerbo GX?
When it should discharge, the Target SOC is ... (so it has no value).
I am not sure if I understand what you mean. Where would you expect to see it? (A screenshot would be nice)
@Dirk-Jan Faber (Victron Energy) that's is an issue that we can't add any screenprint or upload anything here (Parsing response failed message) Is already noticed and mentioned a few times. arwin
I missed that, though I am quite sure that won't get fixed (we are migrating to a new platform for community https://community.victronenergy.com/questions/319632/victron-modifications-community-has-now-moved.html).
Probably easier to put the screenshots there.
Settings--->ESS ---> Dynamic ESS (Cerbo GX).
There you can see the mode it is in and Target SOC
(upload screenshot not possible)
