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Which is the smallest victron device supporting ESS

Hi Community,

a friend of mine would like to build an ESS but is a little bit short on money. So i would like to ask: Which is the smallest device supporting ESS ?

Thanks !

Jens

stxshadow asked
Matthias Lange - DE commented ·

2 Answers

Quattro in France

Hello all.

I'm currently working on the design of our new house.
It will have solar panels, SmartSolar MPPT, batteries (Leaf?) and it seems the Quattro is the inverter to use (two AC in, batteries, 10kW, no feed in if required). All of that with the Color Control GX.

However the Quattro is not validated for France as it's not VDE 126-1-1 compliant (yet?)

So in order to be allowed to use it, I will have to add a VDE 126-1-1 compliant voltage controller (such as an Enya from Tele) and a relay to cut of the house from the grid.

Once I have such a controller, how should I setup the Quattro so it knows grid is out but it can still deliver AC (out of PV or batteries)?

klug asked
perma-batteries answered ·

2 Answers

Grid-Tie Solar AC feed-in not limited ZERO as requested

VRM Portal ID: f045da7d75b0

Hi,

I have enable AC Solar excess feed-in (not Fronius but same frequency controls) and fixed the value to 0W as my county/country does not allow feed-in. If this is not set the AC is not used for internal non-critical AC loads.

[image]


If the AC input power is switched off, the Victron successfully limits the AC Feed-in as expected, however if the AC is present, feed-in occurs that is not expected/allowable.

[image]


Successful AC control on 08-10-2020:

[image]


Please advise.

Regards

Jan Hurter


yoda101 asked
Mark answered ·

2 Answers

Ignore AC settings with scheduled charge from grid - Quattro 48/8000 or Multiplus-II

Hi All,

I am wanting to confirm it would be possible to use a Quattro 48/8000 or Multiplus-II with these outcomes.


Zero feed to grid (disconnected)

Feed from grid in Overload Situation

Scheduled Charge from grid at night during low rates.


Regards

Ivan




Ivan Wagstaff asked
stxshadow answered ·

2 Answers

Can I use a Multiplus the same way that a Tesla Powerwall 2 works?

A Powerwall can be connected to existing grid tie inverter regardless of the PV array size or the inverter size (no 1.0 factor rule).

A Powerwall can be connected to a single phase of a three phase system.

If the grid fails, the existing PV array continues to provide the battery with energy.

Can a Multiplus meet all of the above criteria for one installation?

blue-sails asked
Matthias Lange - DE commented ·

2 Answers

VRM grid lost alarm will not clear

I labelled my Quattro AC input 1 as ‘shore power’, then set up an alarm rule on my CCGX where all input labels (not available, grid, generator, shore power) were enabled.

When I disconnected my shore power, the CCGX and VRM gave me ‘grid lost’ alarms. I acknowledged the alarm on the CCGX and reconnected shore power but it took a reset to clear the CCGX, and I can’t clear it on the VRM.

I’ve tried deleting the rule and setting up a new one, re-labelling my input as ‘grid’ to see if that’ll clear it - no luck.

Any advice appreciated - would like to clear from the VRM.

bullox asked
neil-mclaughlin commented ·

1 Answer

Multiplus-II Absorption and Float - discharging to grid

Hello,

I have an ESS installation with a Multiplus-II 5000/48, an MPPT 150/85 with 4Kw solar system and a 48V 200Ah LifePo4 battery system (currently no BMS). Absoprtion voltages are 56.4 on the Multi and 56.8 on the MPPT - float at 54.4. There is some behaviour that is concerning me in that during absoprtion and float, the Multi seems to be continuously switching between charging and inverting, this happens during the day where the data logs look more complex due to varying AC loads and MPPT but it also happens during scheduled charging overnight, see plot below. You can see the half-hour absoprtion phase from around 00:20 to 00:50 where amps oscillate between +5A and -10A, then folllowed by a large amp spike (selling to the grid) at 00:50 when it switches to float (I believe this is caused by the drop in voltage - hence the battery needs to discharge current to achieve that. In float mode (from 00:50), the same behaviour continues, going from charging to the discharging.

I feel this is neither good for the batteries nor for the Multiplus - am I doing something wrong or areany of my settings wrong? I am running Mode 1 ESS self optimised.

Thanks

Toby


[image]

tkrull75 asked
Jaco Reinecke answered ·

1 Answer

Grid-Tie Options for Quattro 48/15000/200-2x100 in SA

<span style="font-size: 14px;">I have a Quattro 48/15000/200-2x100 with 32 panels with the opportunity to Grid-Tie through a smart meter to the Local Grid. How do I add my Solar System to the Grid and limit the amount of energy passed back to the grid. We have a maximum allowable limit of 5kWh we can push into the local grid. My system generates over 10kWh.</span>

andrewlindstrom asked

0 Answers

Easysolar 48/5000/70 grid connect

Hello i have a customer with a easysolar 48/5000/70 with an additional 150/35 charge controller on the dc bus.


When in ess mode grid connect as4777 can we set this to not charge battery from grid and supply all loads during the day from pv/battery only and only draw grid when excess is required? I have had a look through the settings but could not find an option for this.


Also can anyone confirm the firmware version required for the easy solar, it is about 2 years old and was running as an offgrid setup previously. He would like to export once battery is full and all loads are supplied via pv. i have not yet been to site to retrieve the current firmware data.

rasht3 asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

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
n-dee commented ·

10 Answers

Victron ESS slow response to load changes

I have MultiPlus II 5000VA, 12x 395W 3s4p panels, Victron 150/100 MPPT, Venus GX, 4x 3.5kWh pylontech, ET-112 grid meter, all configured for ESS, in South Africa. Initial symptom I've observed is that whenever a large load (say 1.5kW or more, like kettle, heater, geyser, stove....) is disconnected, there is several seconds (I've seen up to 15) of back-feed into the grid, and this causes the Conlog prepaid electricity meter to cut-off the grid temporarily, which cuts off the non-essentials and i.a. causes the oven to lose it's time and timer and current status (so if it was on, it goes off, and remains off, making it impossible to use it to cook food). I've looked up the specs of the BEC23 Conlog regarding reverse energy tripping, and it allows 40W for 15s or 600W for 1s, or anything in between, so it does allow for a reasonable-sounding bit of back feed before it will cut off the grid, it integrates the power every second and looks at the energy within a 15s sliding window basically AFAICT. However, what I've noticed from the victron remote console (on local LAN, not via VRM) is that it takes a very long time for it to adjust to load changes, in both directions -- if a kettle is switched on, it uses grid power initially and slow ramps up how much comes from PV or batteries, over about 15s or more, and when that load goes away, it feeds the excess that comes from PV or battery into the grid for about the same length of time. I spoke to my installer about this, and since some posts here on the forums were potentially implicating the ET-112, he disabled that in the ESS settings for now (which then also loses the benefit of essential vs non-essential loads on the ESS apparently, so wouldn't be a permanent solution anyway). In any event, this seems to have made no difference at all, I still observe the same slow ramp-up and ramp-down on load changes, the latter leading to the grid back-feed causing the prepaid meter to trip.


The municipality refuses to replace my prepaid meter, as they have an exclusivity arrangement with Conlog apparently, and the L&G apparently needs some sort of power-line comms GSM concentrator to be installed city wide, which is not in place. The installer wants me to privately replace the Conlog with a Landis&Gyr 4-quadrant meter with GSM comms module, at a very high price to me, but this seems like the wrong solution to me. At best, if it actually works, I'm being asked to pay a hefty sum for a workaround to (what I perceive as) the slow Victron response to load changes? At worst, the problem might persist after this expensive experiment.


There seem to be a number of posts on this or related topic, but nothing more recent than two months or so, and no satisfactory answers that I can see. Some posts even have answers from Victron staff saying a solution is being worked on, but no follow up to that which I could see... FWIW, all the firmware was updated as part of the installation a few weeks ago, so it's not more than a few weeks outdated at worst. Based on forum posts here, I've tried increasing the ESS "grid set point" from the initial 50W to as high as 300W, and while it somewhat reduces the prepaid meter tripping incidence, it does not at all resolve it, and the higher I set this, the more ESS advantage I'm losing of course.


So my question is, is this something known to Victron which will have an imminent firmware fix? Is there some configuration parameter/setting that needs to be changed? I really don't want to go down the arduous and costly route of replacing my otherwise-perfectly-good Conlog prepaid electricity meter with a very expensive (over R8000, or 400 euro, excluding installation) 4-quadrant L&G meter if not absolutely necessary.

gyrovague asked
Daniël Boekel (Victron Energy Staff) commented ·

1 Answer

Dashboard doesn't include grid energy used to charge batteries

During the winter months,

[image]

I use scheduled charging to top my batteries up overnight when I'm on cheaper energy, but the dashboard data does not include the grid power, though if I export the data with the advanced tab the amount of energy I've drawn at night is tabulated. Surely this power from the grid should be shown in the dashboard? The grid energy shown here is just the stuff I use directly from the grid and does not include the >100kwh in January for example I took from the grid at night.

gingernuts asked
ejrossouw answered ·

2 Answers

High grid voltage disconnect with Multiplus II in AU, why?

Lets be clear, I understand that power generators should not feed in energy if the grid voltage is already high, hence the regulations around handling high voltages. Hence the locked-in grid parameters.

I have recently has "grid lost" for short periods in the middle of the day when high voltages were sustained. Circuits upstream of the inverter were not affected by a power loss - that made it was clear that the MP2 disconnected itself from the grid. The MP2 went into "Inverting" mode.

The question is "why disconnect from the grid?". Why does the MP2 not simply go into "pass-thru" mode or a "zero-export" mode? To me this seems much more sensible. It achieves the desired outcome of removing the generator from the grid while not drawing down on batteries needlessly.


Is there any way to change this behavior in response to high (10 min moving average) voltages? (yes, ideally, fix the voltage issues but ...)

thank you,


Ron



rrroonn asked
rrroonn answered ·

2 Answers

Feed-in excess solar charge power from Bluesolar not working in ESS with LG RESU

Hi

I am trying setup Feed-in solar excess to the grid when battery it is full . My setup Multiplus 48/3000 and RESU 10 + Bluesolar 150/60. I have switched on Feed-in exces in ESS menu but not working. I do not have energy meter.

VE configure settings are the same as in victron maual.

It is possible with this config?


peterp12 asked
peterp12 answered ·

1 Answer

How can I see Daily grid consumption in VRM?

How can I see daily grid consumption as a single number per day

Ron Alexander asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

Max mppt feed in back to non essential loads parallel to AC in

Hi. I'm looking to setup the solar part of my installation, with ESS and Zero feed in to the grid(due to regulation). I want to be able to have the batteries charged to full, then loads on my AC1 to be covered and finally excess PV power to be fed to AC input parallel loads. I currently have a 48/3000/35-50 230v, with 105AH battery bank.


Is there a limit to how much solar i can install for the parallel loads?

hasan-mansoor asked
H.W.Oelofse commented ·

2 Answers

MultiPlus-II: Protect generator from feed-in

Planning a DC-coupled ESS with Multiplus-II (due to grid regulations) and 2 x Pylontech US2000 batteries and Grid Feed-In enabled.

Batteries are mainly for backup (feed-in tarriff works out cheaper than batteries per kWh transferred).

I also want to be able to connect a small generator and charge the batteries during longer power outages when battery SOC is insufficient to last through the night.

If I connect the generator to the AC in, I'm concerned that the Multiplus-II might try to feed-in to the generator.


1. Is there a way to automatically ensure that MultiPlus-II will not start inverting while on generator? Automatically switch it to "Charger Only" and pass-through to AC loads?


2. I could completely avoid the risk of feed-in to generator if I could find a charger that could connect directly from 230V AC generator to the batteries, so the generator would be kind of "DC-coupled"...but what charger would work for this type of batteries with built-in CAN BMS?


I have already read other similar questions like the one below, but the answer there would not work for me because I would really want to charge the batteries from the generator.

https://community.victronenergy.com/questions/20939/multiplus-ii-with-grid-injection-how-to-avoid-inje.html

kolfleading asked
dean-d answered ·

2 Answers

ESS System Phase Compensation Help

i installed 3x MP2 3000VA /48V. Updated Firmware to 2629474. made ve quick config, setted all settings. made the ess assistant in each MP. Now i try everything but the whole system acts like phase compensation is disabled although it is enabled. each inverter does only deliver so much power as required on the specific phase according to the grid meter. No idea why the compensation setting in the venus gx is not working. Please help!!

AC L1,L2,L3 is connected to MPNr.1-ACIN, MPNr2-ACIN, MPNr3-ACIN. The system is useless. If the electric car is plugged in on one phase with 7kW it only delivers max. 2.4kW from one inverter, if no other loads are switched on. If someone cooks on L2, i only get 2.4kW from the inverter on Nr.2.

I read all installation manuals, the training video on the Victron professional side, there is no hint what is wrong, looks like a software bug on the Venus gx!

[image]


[image]


gnagflow asked
gnagflow commented ·

6 Answers

AR-N 4105 2018-11 3 x Multiplus-II 5000

Hello everybody,

I just got a call from the grid operator TEN here in Germany, and he see some problem with the AR-N 4105 2018-11 I send him for my installation. The system setup ist:

3 x Multiplus-II 5000 (only connected on AC-In)

1 x VenusGX

1 x EM24

1 x Pylontech Battery Stack (12 US3000 + LV-Hub)

1 x Fronius Symo 8.2-3-M

1 x Kostal Piko 8.3


I calculated for myself with 4000 VA for each MP-II as mentioned in the datasheet as "Maximum apparent feed-in power". So I come to a total of:

3 x 4000 VA + 8200 VA + 8300 VA = 28.500 VA which is < 30 kVA, and therefore no external Grid-Protection (NA-Schutz) is needed.


The grid operator now says, there are 2 Problems:

1. the output power as described in the AR-N 4105 2018-11 is specified as 4,85 kVA, which is to much for one phase. This confused me too, because in the same document there is a comment about a limit of 3 x 4,6 kVA = 13,8 kVA for all ESS - Systems.

2. the sum of power with this numbers is above 30 kVA, so he wants me to build up an external Grid-Protection.


Has anyone else experience with MP-II 5000 in german grid? When I read the certificate second time, I think MP-II 5000 are not covered by this document (Die maximale Anschlussleistung von 13,8 kVA (max 4,6 kVA pro Phase) darf nicht überschritten werden).


Best regards

Christian

[image]


christian-dorst asked
ejrossouw edited ·

1 Answer

G98 / G99 Compliance

Any information on when more kit will be certified G98 G99 compliant? We may have customers for Quattros but they need to be certified.

scubajoe asked

0 Answers

Feature request: Germany 70% feed in limitation of ESS to the grid

My system: Multigrid 48/3000/35-50 with Venus GX and two connected Pylontech US2000 Plus. A BlueSolar 150/35 is DC- connected to the Multigrid. My Fronius Primo 3.0-1 is AC- connected to the output 1 of the Multigrid. The gridmeter is an ET340.

Now i want to feed in the excess energy to the grid after loading the batteries to refinance my pv- system. If i want to get my feed in energy payed i have to register my system by an electrician to the energy supplier. There is a law in Germany called EEG: Only feed in 70% of all the generators maximum power output. The electrician have to set and confirm that the maximum power feed to grid is set to 70%.

Without this limitation to 70% on the entry point to grid you have to install a radio remote controller to govern down your system in four steps by the energy supplier in case of over- energy of the grid. This controller costs about 1100€ and monthly 5€. Last choice is to cut off all inverts to 70% of power generally.

Further information see: http://www.buzer.de/gesetz/11230/a188267.htm

The technical system and measuring devices are installed, available and working fine at the ESS. Other possibilities to limitate to 70% means an huge technical effort to the whole system and money or a loss of energy.

The Fronius and BlueSolar MPPT can be governed by the CCGX to zero feed in to the grid (works fine) but there is no possibility to govern it to a adjustable max. feed in to the grid.

I need a function to set the maximum power (50W steps) feeded to the grid by the ESS.
Priorities: 1 = self consumption; 2 = loading batteries; 3 = feed to grid with adjusted maximum power
This is an important function to use this system in Germany to feed in to the grid.

I don`t know the exact conditions of the network operators but password protection for the max. feed in value will be necessary.

Is Victron planning such a function?

moeterxl asked
ossi commented ·

7 Answers

ESS with Grid meter function/control with backup power

We have been experiencing something interesting with the Grid meters, specifically the ET112 and ET340. At one of our sites we have a 5kVa Multiplus II, with the ET112 Meter connected on the input of the inverter (basically after the Main breaker from the Grid in the DB). Between the inverter and the meter is all the "non-essential loads".

On the output of the inverter is all the essential loads. We installed the meter to try and enable the Victron to back feed excess solar power to the "non-essential" loads, without back feeding to the grid. This worked great, but what happens in the evening intrigues me.

The battery power of the system gets "dumped" to the "non essentials" during the evening, leaving no power for the essentials to run on at night. The battery reached the discharge floor before 7 at night, but when we removed the Non essential loads from the meter, the battery discharged normally and last the whole night.

My Question is: how can we prevent the battery from being "dumped" back to the "non-essentials" and only allow the backup power to supply the essentials/inverter output. I have been scanning through the manuals but i do not see this mentioned anywhere. Can someone be so nice to assist? Please?

schalk-1 asked
schalk-1 commented ·

2 Answers

Feeding back to Grid with ESS

Mutliplus II 5kVA, 250/100 MPPT, 3,7kWh Solar MD battery.

EM24 meter installed, the battery constantly tries to zero out the grid input. Therefore the inverter is feeding back 3kW constantly.

cbailoez asked

0 Answers

Multiplus - modbus - grid tie solar 3ph - use spare energy

Hi, I have a house with a 4kW GT system on FIT on phase A

I have added a 12kW array which I am planning to split over phase B and C.

I want to use a multiplus II as a smart inverter/charger from a lithium battery to store excess energy from any phase.

My supplier meter is net metering (non smart). So what I (think I) need is my own net metering meter which talks to the Multiplus and tells it to charge or discharge the battery to keep the import/export at zero. However this will only be pulling off one phase. This is why I need the external meter. If I am exporting 1kW on phase B and C (for example), with no import, but the Multiplus is on phase A, it can still import 2kW on phase A with no supplier charges.

I have researched Modbus meters but I just wondered if anyone had done anything similar - presumably I need an interface between the Modbus and the Multiplus to convert Net Export Power into Victron charge now Power.

I will have a zappi car charger and a DHW store system to soak up the excess energy. Ideally this would be priority order

1. Car (if present)

2. House batt

3. DHW cylinder

4. Export.

Although I would be willing to always do House first if that is less complicated (the zappi and DHW system will communicate internally but I don't know if they would communicate with the Victron).

I believe delays can be programmed such that the Victron could have a shorter delay on start up than the Zappi which would ensure the house batt gets priority over the car.

Of course as the car isn't always there I thought that would be best if the car got first dibs as hopefully if its a sunny day the house would get a chance later after the car leaves.

I should be good for producing approaching 16000kWh per year with this system (the 1year old original 4kW array made close to 4000 in a year and the 12kW array is less shaded)

My background is Marine - off grid so use a lot of Victron products. I have used R pi a bit so I guess this or Arduino could maybe be a useful interface if there isn't a premade solution available.

Thanks in advance

Olly

olly12383 asked
catraz commented ·

2 Answers

How to force charging batteries at night from grid on an EasySolar with an ESS configuration ?

Actually, my problem was that my SOC was toping at 89% and the EasySolar didn't accept to charge the batteries anymore.

After a little discharge, (SOC at 84% this morning) it finally accepted to charge them.

Now the question is "Why does the EasySolar don't realize that the battery is full ?"

Is there a way to reset the soc at 100% ?

Please tell me if I am in the wrong way of thinking.

Config : EasySolar 3000VA 48V - 500AH LeadAcid Batteries - 2000W solar panels - set up 1 month ago.

stephduyns asked
girbar answered ·

4 Answers

Keine Einspeisung in Netz erlaubt.

Hallo,

wie kann ich die Einspeisung verhindern am AC In bei einem MultiPlus2 bei

ESS.

Da in Deutschland keine Einspeisung auch die 0 Watt Einspeisung ohne Genehmigung

des Netzbetreibers nicht erlaubt ist.

Hub4 funktioniert auch nicht ohne Einspeisung und HUB1 ist wegen der

Spannungssteuerung keine Alternative.


Meine Anlage ist DC verbunden.

- 2 Mppt Laderegler

- 1 MulitPlus-II 48/3000/35-32

- 3 Pylontech US2000

- Venus GX

- ET340


Wozu gibt es im Multiplus bei Grid Code - Settings die Einstellung

-> Use Aux1 as disable FeedIn signal.


Freue mich auf eine Antwort.

knut asked
maha commented ·

4 Answers

Getting Power from the grid only if Multiplus 2 has to deliver more than 2000 Watt

Hi,

I have an island with 1,92 KWp, MPPT 150/35, Multiplus 2 48/3000, Venus GX and 3 Pylontech US2000.

In some cases, when the MP2 has to generate more then 2,5 KW, the MP2 is blinking red, which means overload.

Now i want to configure my system so, that it gets power from the grid only if MP2 has to generate more than 2 KW. But how ?

Thanks for your answers

Karli

karli asked
ejrossouw answered ·

1 Answer

How to Backfeed to Grid from Multi with PV

Hi,

i'm running a Multi 12/500 in my Van, combined with 150Ah LiFePo4 Batteries, MPPT and 200Wp PV.

Is it possible to feed unsused Energy back to the Grid if it's not used for Charging the Batterie?

Do i use ESS for that?


Thanks in Advance.

magus asked
magus answered ·

3 Answers

MultiPlus-II auf Netz, Akku und myPV Verteilung

Hallo,

ich will eine PV-Anlage mit maximalen Eigenverbrauch aufbauen. Möglichst KEINE Einspeisung ins Netz. Momentan sind folgende Komponenten geplant:

  1. MultiPlus-II
  2. BlueSolar <- PV-Panels
  3. 48V-Akku
  4. ColorControl GX
  5. Smartmeter EM24
  6. myPV-Thor-Heizstab

Nun zu meiner Frage, kann ich die Stromverteilung in dieser Konstellation so einstellen, dass

  • Prio1 - der Gesamtstrom (aller drei Phasen) vom PV-Strom bedient wird. Eine Bilanzierung soll ja im Stromzähler stattfinden, so dass ich auf nur einer Phase einspeisen kann.
  • Prio2 - der ggf. verbleibende Strom zur Ladung des Akkus verwendet wird
  • Prio3 - der ggf. restliche Strom mit dem myPV im Pufferspeicher verheizt wird

Ist so eine Priorisierung möglich oder findet das Laden der Akkus und bedienen des Netzes immer gleichermaßen statt.

VG Mazon

mazon asked
Matthias Lange - DE edited ·

1 Answer

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