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Victron ESS + ET112 = slow response

Hi,

Recently I've installed ET112 grid meter on my system (which was using CT sensor previously) and I've noticed that the Multi is very slow on response to load. Currently my system looks like this:

[image]

The grid set point is set to -10W. The multi needs a good 15-18 seconds to stabilize after large load kicks in and another approx 15s to stabilize after load drops off. Check the video from VenusGX (the load is switched on at about 16s of the clip and switched of at 43s of the clip):

Is that how it should be? The difference in the load is just about 1.4kW, why is it taking so long to handle that?

Previously I was using CT Sensor extended with Cat5e cable to over 25m long, the system looked like this:

[image]

The response to load was pretty much instant. I've recorder video using the same load as on the previous one (load switched on at about 10s and switched off at 23s of the video):

The system need seconds to stabilize

Also you can see a clear difference on the Grid use graph from VRM portal:

[image]

[image]

As you can see, with CT sensor the system is very close to grid set point, with ET112 grid meter it is way off and hardly ever stay close to set point. The situation is even worst during cloudy day when PV power is fluctuating (you cen see it on my other youtube video).

Is it normal behavior? It looks like Multi can handle this load easily, the problem seems to be in the feedback from the grid meter (or algorithm when ET112 is in use). Is there anything I can do to improve this reaction time??? Please advice.

Kind Regards

mysik asked
Rob Duthie answered ·

12 Answers

Restrat when battery is fully charged with grid without grid feed-in

Hello. I have problem with this. (three phase) Configuration is 3x Multiplus II 3000W 48V, GX modul, 1x MPPT regultor 150V/85 and 1x MPPT regulator 150/70, 1x VictronSMARTHUNT 500A with 16x lifepo4 battery 300Ah. BMS is JIKONG B2A24S150 and current senzor. With ESS configure. When battery is fully charged and connect with GRID system fall down and multiplus II is restart When enegry is in FV panels. I disabled feed-in is disabled. Grid metering is "Inverter/Chrarger" If I use off-grid everything is corect don´t resatart. Have you ever solved this problem.

Tomas asked

0 Answers

How to limit power/amperage export to the grid?

I have a EasySolar-II with 1.8 kW PV panels and 4.8 kWh pylontech batteries.

It's grid connected in a camping site, so as soon as my batteries are charged and the PVs starts to export to the grid, whenever it reaches ~ 1300 W, I hear some noises in my EasySolar, then it disarms something and I got off grid, but not without electricity in my tiny-house, thanks to the inverter/batteries/PVs.

Why does it happens? It does not seem to disarm the camping circuit breaker which, I think, is limited to 6A.

Is there a way to limit the export to, say, 1000 W?

Am I suppose to set it here? I can't change 'Feed-in limiting active' to 'Yes'

[image]

I played with "Maximum feed-in" but I am not sure of any apparent effect.

If this is alright, what that means exactly? That if I my batteries are depleted and I truly need the grid than I'd be limited to 1000W from the grid?

During my attempts to set up the system, besides the "usual" MultiPlus-II 48/3000/35-32 Alarm Grid lost

I've seen:

Pylontech battery Warning High Voltage 53.63V

Are these issues somehow related?

Many thanks in advance.

alans asked
bm97ppc answered ·

3 Answers

How can I get a shore-power-tied DC-coupled Quattro to use available solar power?

I'm an electrical / embedded systems engineer. I spent the entire day today (unsuccessfully) trying to get VE config to consume available solar power while also being grid tied and at a full SOC. I've read probably 10-15 posts on the topic and read the ESS manual (along with other support docs). I'm very frustrated.


Inverter: Quattro 5k, 48V, 120v

MPPT: SmartSolar 150/35

Control: Cerbo

BMS: Orion (CAN)

Battery: 48V, 300AH

Mains: 20A circuit current limited to 13A for 15A cord.

Connection: USB MK3


I updated VE Config. I installed Victron Connect. I updated the firmware on the Cerbo. I updated the firmware on the Quattro.

I tried dedicated Ignore AC input based on SOC, the inverter would not turn on or would turn on and off repeatedly.

I tried self-consumption hub 1, connected to mains, no feedback. The inverter would not turn on. I suspect this is because I have a CAN based BMS and there is no option in the hub setup for a CAN BMS?

I tried the ESS hub. Again, either the inverter would not turn on or would turn on and off repeatedly (mains contactors opening and closing).

Yes DVCC is enabled.

None of the instructions posted on Victron's website give a walk-through of the proper settings of VE Config while also using VE Config's terminology. I'm flabbergasted and exhausted at even trying to write down all the different things I tried to get this to work. Each one of them requiring an inverter reset thereby resetting my interenet, appliances, etc. My starlink had to be reconfigured because there were so many resets. I feel like this should be a single checkbox somewhere--"prioritize solar when on shore power".


sideburnie asked
jwfrary answered ·

1 Answer

Powercontrol prioritization

I'm about to get AC current sensors for grid (Victron external sensor) and for AC PV (Victron ac sensor) next week.

If I've understood correctly, this makes my Easysolar 2 GX aware of AC PV grid feed and I can utilize it to charge my batteries or power my "critical loads" or AC loads that are in my ACout (I've just now come to assume that without a "real" grid meter I cant really see them separately?).

However, I'm not sure if this will lead to also battery power being expended for my non-critical ac loads where I wanted to only use excess solar for them? Is there another measurement for ACout or how will this work out after all? Is it in any way possible to use both the external AC sensor (as "grid meter") and the internal one in ACin (critical loads)?

Kari Saaranen asked
Kari Saaranen answered ·

3 Answers

When BMS Switch DC off and grid is available, why Multiplus Switch off the Full House (AC)?

I still cannot understand, why Victron switch off the AC Output, if the Batterie has problem, but still the Grid is available?
My full house is connected to an 3-Phase system and the full house run over the 3 Multiplus. If the DC Bus has some Problem, the full House will switch off because of the Voltage Ripple or Voltage minimum. This can happen at the beginning of an system to see how it works with the batteries!

So maybe BMS will switch off the DC Voltage!
BUT if there is an AC Input available, why the Multiplus cannot switch to the AC-Mode and just switch to the passthrough mode?

So house is off in this situation and grid is available make no sense for me!

Thank you!

Best regards
Kevin

kevstone122 asked
shaneyake commented ·

3 Answers

Ground Relay Error 8 with Fronius IG Plus when switching back to grid

Hy All,

we deliverd a new Installation (Number 8) to an "existing" Farm House with a 3 - Phase ESS 15 kVA - Multiplus II System.

There is a Fronius IG-Plus 120-3 running for more than 12 years. So good for now.

Everything is working fine except we start the system in "Island" Mode with an Active IG-Plus. When AC Mains is connected, the System performs its Relais Test and after about 5 Minutes it is going to switch back to grid. Immediately, when switching back we get an Ground Relais Test Error 8.


When starting in Island Mode with a disconnected IG Plus everything is working fine.. after switching back to grid and connecting the IG Plus everything is working like a charm.

When coming from Grid with a GridLost, we also encounter the same problem when switching back to grid.
To make a conclusion.. When the Fronius IG-Plus is "Connected" (we switched off the system, because it starts working after 30 seconds.. so we could not test, if its a problem when standing by connected and producing), we get an Ground Relais Test Error when switching back to grid. (Always)


Whats wrong...

There is no mixed Ground and Netral (We have controlled that several times)

The Multis are showing those ERRORS:

Phase L1, device 1 (0) #44 0x820002
Phase L2, device 1 (0) #15 0x800024
Phase L3, device 1 (0) #19 0x800024

From the wiring...

AcMainSwitch - SwitchOverToGenerator - 100 mA 3 Phase FI - MulitplusII - FI-s to different Loads


the IG Plus is connected:
IG-Plus - LS 16A - FI- 003 A -To The MulitplusII Ac Out


As talking to Fronius Service Personal the have no Idea what s going on, because they say they do not connect Neutral to Ground ... so do we have issues with the 100 mA 3 Phase FI, or the FI 003A connected to the IG Plus?

The System is running the latest Firmware 487.


Unfortunately there is no Support from our Dealer, because they do not have the knowledge.


Have a nice day, always Sun and I hope to get some good feedback...

thank s in advance

Bernhard


Bernhard Matschinger asked
Bernhard Matschinger commented ·

0 Answers

GridAssist only

Hello.

I am using a SmartSolar 48/3000/35 and 10kWh LiFePo4 batteries.

How can I use GridAssist as it is described in HUB2v3 without using that assistant?

The assistant doesn`t work. I think because I have a stand alone BMS. With that assistant you can`t choose "any LiFePo4 battery with own BMS" as in ESS assistants.

Thanks.

rikschamax asked

0 Answers

Can any Victron Inverters push power back to the grid at 60Hz (USA)?

Can any Victron Inverters push power back to the grid at 60Hz (USA)? I have solar on a camper and what excess power to push back to the grid when it is parked at my house.

sloanebiking asked
najab answered ·

1 Answer

How to ajust energy feeding to grid to keep grid voltage below 253V?

Is there a way for the system to adjust grid feeding per phase in such a way that the amount of energy fed to the grid be controlled by the grid voltage on each phase?

The more my system feeds the grid the higher the grid voltage gets.

When 253V is reached PV inverter turns off and waits for the grid voltage to drop below 253V. It is enough for one phase to reach 253V for the all phases to turn off.

Can the system redirect power from phase with the highest voltage to the phase with the lowest and this way avoid turning PV inverter off. If transferring power is not enough to avoid grid over-voltage, freqency shifting could be used to lower the PV power.

marekp asked
shaneyake commented ·

4 Answers

Zertifikat zur Leistungsflussüberwachung am Netzanschlusspunkt (PAV,E)

Sorry,
The description only in German, since I suspect that this is a "predominantly" German "requirement" of the German network operators



Hallo zusammen,

ich bin gerade im Aufbau einer ESS Anlage möchte gerne eine Nulleinspeisung machen, mit einem Multplus II 5000, EM24, Cerbo und drei MPPT und Pylontech Speicher. Mein Netzbetreiber (Bayernwerke) benötigt ein Zertifikat zur Leistungsflussüberwachung am Netzanschlusspunkt (PAV,E)


Ich habe folgende Nachricht erhalten:
-gemäß VDE-AR-N 4105 mit Ihnen dürfen wir nur eine Wirkleistung zwischen 60 und 100 % der Wechselrichterleistung zur Einspeisung vereinbaren (P-AV,E) vereinbaren.

- wir benötigen ein Dokument (Zertifikat) eines „Dritten“ (Zertifizierer) welches besagt, dass ihr Regler bzw. Wächter eine P-AV,E-Überwachung gemäß VDE-AR-N 4105:2018-11 umsetzen kann


Laut VDE sind seit 1.4.2021 alle Zertifikate vorzuhalten.
Die Zertifizierung für die Leistungsflussüberwachung am Netzanschlusspunkt (PAV,E Überwachung), muss abweichend von dem Einheitenzertifikat E.4 und dem Zertifikat E.6 nicht zwingend über ein akkreditiertes Zertifizierungsunternehmen (z.B. DAkkS) erfolgen. Es reicht ein unabhängiges Zertifizierungsunternehmen ohne Akkreditierung (z.B. TÜV, Dekra,…).


Ich hab bei Victron alles durchgeschaut, kann aber ein Zertifikat für Leistungsflussüberwachung am Netzanschlusspunkt (PAV,E) nicht finden. Kann mir da jemand helfen? Victron hat ja wirklich alle Zertifikate zum Download, dieses aber nicht.


Vielen Dank


Ich hab auch zwei andere Einträge hier gesehen, die das gleiche Problem haben/hatten, aber Lösung war leider keine dabei.

helmut11 asked
galileo1 answered ·

5 Answers

Multiplus 2 mit EM 24 - 485 Regelverhalten Inverter extrem schlecht.

Hallo, ich habe seit 2 Wochen einen Multiplus 2 und habe seit Anfang an Probleme mit meiner Grit Funktion.

Ich hatte erst ein EM 24 Ethernet, was nur Problem gemacht hat.

Dieses wurde nach Rat von Nutzern gegen einen EM24 485 getauscht.

Teilweise am Tag funktioniert das System echt gut im ESS betrieb, aber wenn die Lasten ( Strom ) grösser funktioniert die Inverter Funktion sehr mangelhaft.

Habe mal ein Video hochgeladen um es zu verdeutlichen.



Das System ist ein raspberry 3B - mit 2A Netzgerät.

Firmware sind alle Aktuell.

ESS ist eingerichtet ohne irgendwelche extras.

Ladegerät ist im Multiplus 2 deaktiviert.

Angeschlossen ist nur AC1 IN - auf L1 des EM24

EM24 ist auf H eingestellt

Verkabelung habe ich heute neu gemacht - alles IO auch die Schirmung.

DCC ist an, ohne extra Einstellungen.

MPPT´´s sind zwei vorhanden.....


Wie kann ich ausschliessen das der Multiplus 2 einen Fehler / Defekt hat???

[image]

[image]

[image]



jailbraik asked
jailbraik edited ·

32 Answers

Multiplus II 48/1000 disconect fron grid with RoCoF too high msg (Grid code standar Spain)

Multiplus II disconnect from grid

Multiplus with grid connection on AC-IN, Fronius on AC-OUT and Pylontech bateries and Cerbo, all with latest firmware, with ESS assistant installed, Multi disconnect from utility grid, it you manually reconnected the grid, the system remain connected to grid for some minutes and disconnect again and every time.

[image]


Gird Frec in is 50.1Hz Voltage around 240 (inside Spain regulation limits)

Any idea or solution?

jagonzas asked
jagonzas edited ·

2 Answers

Does ESS Violate Anti-Islanding?

New residential install of a Multiplus-II with 600 watts of solar from SmartSolar MPPT. I'm in the U.S. and must NOT feed back into the grid during a power failure. Despite having DC feed-in disabled, the system still shows several instances during the day when AC in was negative and Grid Feed-In was positive. Batteries were not fully charged and the amount of solar at the time was only about 100 watts.

I've set the Grid Set Point to zero and that seemed to reduce the feed-in from a couple hundred watts to just a couple dozen. But I need to know: will this system attempt to feed power back into the grid during a power failure, thereby creating a hazard for utility workers or will this behavior only ever be seen when grid power is available? The whole concept of ESS is one of the primary reasons for buying this system and I don't want to give up on it needlessly.


jm0278 asked
Guy Stewart (Victron Community Manager) answered ·

2 Answers

Basic support Multiplus with Generator and grid connection

Hi, i am new and have a question if my plan is realizable. My plan is to use a Multiplus with a connected generator and solar power to reduce my grid load.

Currently i only have a grid connection with 3 phases and N, i live in Germany.

And my final solution would be this:

Use always the generator source to reduce the load. If the generator does not deliver enough power also use power from the battery which will be loaded from the solar panel and a Victron MPPT solar controller. If these two sources do not have enough power, use grid power.


This is my expectation of the ESS System:

I would expect that ESS of victron with Phase-compensation is able to handle my load and will reduce the grid consumption of my house to zero, as long as the generator power (max input configured in Multi) and Multiplus inverter power is higher than the load of the house.

Is this correct?


If yes, i would expect these devices in my system:

EM24 grid meter

Mutliplus

MPPT solar charger

Batteries


Wiring setup:

Connect the generator to the input of the multi and of course the battery to it. The battery will also used from a Victron MPPT to power up the battery with solar power. Connect the output1 of the Multi to one phase of my House, thats it?


It sounds to easy to be true.


I know there are a lot questions and maybe the headline is also not really helpful, but maybe one of you will help me to get better knowledge of this. Or will post some info where i can get the information.


Thank you very much.

big-blue asked
shaneyake commented ·

4 Answers

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