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Safe to run a Multiplus without grid feed permanently ?

Hi, I have 2x Multiplus 5KVa inverters in parallel with 18x 400W panels and 4x 6.2KVA batteries. I Have turned off my feed from the grid as it is extremely unreliable.

Is this safe and OK for the system to run permanently without any supply from the grid ? is there anything bad or negative doing this ?


Is there any settings I need to change to optimize the system for this scenario to be used ?


Thank you

gerhardking4 asked
wkirby answered ·

1 Answer

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
Eduard answered ·

13 Answers

How to tie into grid with multiplus already purchased

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I have already purchased all of the above equipment to instal into a portable solar shed. My question is can I add any other equipment to this design so I can tie into the grid and sell power back to the power company?

Thanks Tom

portablestructures asked
Kevin Windrem answered ·

1 Answer

Warum wird Strom aus dem Netzt entnommen?

Hallo Leute ,


mein ESS System funktioniert soweit sehr gut und zuverlässig:

Multiplus II 3kw

Color Control

2x Pylontech us2000B

Zähler netzt und Zähler pv


Nun kommt es immer wieder vor das Nachts oder am Morgen Strom aus dem Netzt entkommen wird obwohl der Akku noch mehr als 10% hat(10% ist mein Soc) . Wie auf dem Bild zu sehen ist wird Strom aus dem netzt entnommen obwohl der Akku 30% hat und zudem wird sogar noch aufgeladen.

Teilweise habe ich beim Laden den Eindruck das Victron nicht richtig misst oder Werte fürs laden als Verbrauch annimmt ???


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[image]

rb994 asked

0 Answers

Multiplus 2 funktioniert nicht

Hallo ,

ich habe eine Insellösung.

Meine Geräten sind alle Neu: Multiplus 2 48/3000 ,

BMV 700, CCGX, EM 24

Seit heute habe ich eine neue smart solar MPPT 250/60 erhalten.

EM 24 ist im CCGx eingebunden.

CCGX zeigt ESS 5

MPPT hat gerade über Victronconnect - via - meine Handy , eine Software upgrade erhalten.

Das Problem: PV an der MPPT angeschlossen : Spannung 0,03 V,

PV vom MPPT getrennt ist meine Spannung 148,x V

Hat jemandem eine Idee, wo es bei mir Klemmpt?

Ich bin sehr Dankbar für Ihre Tips.


sonnenausessen asked
sonnenausessen commented ·

3 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!

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gnagflow asked
gnagflow commented ·

7 Answers

Solar feed to AC Out-1 + AC Out-2 on a Quattro ?

Hey! Please advise, it is possible:

  • We have a stable input 230V 100A (sometimes there are blackouts)
  • We want to supply Quattro 48/10000 and connect PV ≤9kW via controller MPPT 250*100 *2 pcs
  • The battery will always be charged.
  • Maximum load on AC output-1 ≤ 7kW
  • Maximum load on AC output-2 ≤ 10kW (when the input network is available)

Q1: Will solar energy be shared between AC Out #1 and AC Out #2?

Q2: If the consumption is small during large PV generation, is it possible to set up a power discharge to the grid?

Q3: Do I understand correctly that when AC Input #1 disappears, AC Out #2 will automatically turn off?

Thank!

[image]


t-energy asked
t-energy commented ·

1 Answer

Has something changed with my grid export?

Bonjour mon système fonctionne depuis 3 ans . Les mises à jour sont automatique mais depuis un certain temps, je constate des changements dans le fonctionnements du système . Une mise à jour a t'elle besoin d'une intervention manuel par la suite sur les équipements ?

Je ne comprend pas bien la lecteur qui pourrais m'aider ?

Injection alors que les consommateurs sont couverts et la production PV inférieure . La lecture devrait être en positif sur le réseau pas en négatif meme avec de gros consommateur ?

Merci de vos lumières.


Hello my system has been working for 3 years. The updates are automatic but for some time, I have noticed changes in the functioning of the system. Does an update need manual intervention later on the equipment?

I do not understand the reader well who could help me?

Injection while consumers are covered and PV production is lower. The reading should be positive on the network not negative even with heavy consumers?

Thank you for your insight.

florian17000 asked
florian17000 answered ·

3 Answers

Unstable Grid with ESS

We have a 3-phase ESS system (grid connected) that is giving us grief:


The customer's house is about 2km away from the road, so the grid connection is very unstable and if any significant current is drawn, the voltage drops and lights flicker and other appliances turn off in the house.


The problem seems to be that when the load is large enough for the system to switch over to the grid, the entire system follows the grid voltage, rather than creating a stable voltage from the Multis.


Is there any way to make it so that the AC Out of the system is stable regardless of the AC In?


Thanks in advance

Elliot Morgan asked
seb71 answered ·

1 Answer

second battery bank on the MultiPlus grid ?
HI,


I have a working system with PV panels charging 220Ah/48V victron batteries connected to a MultiPlus providing AC, and optionally recharged by grid or (soon) a fuel generator. It is monitored by a VenusOS device.


I have the opportunity to have a second different battery bank (I already got them) and I would like to use it to extend the capacity of the system. The batteries are very differebt and I'd not want to connect them in DC with the first bank.


I wanted to know if it was possible to connect them on the AC local grid, possibly giving more power (sometimes the loads exceeds the first multiplus capacity). I'd imagine connecting them to a Quattro or Multiplus. Is it possible ? How can the second battery bank be instructed to recharge when the generator is up or on excess solar energy, and discharge when load is needed ? Is it automatic somehow ?


Additional question. When I have excess solar energy available, I'd like to power up some devices (heat up the water tank). Is there some way to do that ? At a distance (much like how the electrical grid sends signals over the wire to trigger the day/night mode)


Thank you

mildred asked
alan commented ·

4 Answers

Quattro 10k - AC- IN - 1 Won’t accept Grid Power?

2 -Quattro - 10k inverters not accepting grid. Will start to load then disconnect.

60hz

120 v

Doesn’t drop or spike just disconnect.

Any help would be appreciated.

delaney asked
Paul B answered ·

1 Answer

which product does it all

Tired of not finding a clear answer in de product descriptions. I'm looking for a charger inverter ups-function which will also delivers power to the grid when the batteries are full or not connected. Do all inverters de this? Or none of them? Or did I miss one.

Thanks, Mich

mich888 asked
alan commented ·

3 Answers

grid code "Europe EN50549-1 2019" en France ?

Est-ce que le grid code "Europe EN50549-1 2019" est applicable en France ?

Nous avons des soucis de synchro triphasée avec le VDE 0126-1-1 et nous cherchons une alternative

chuff asked
Thierry Cortassa (Victron Energy Staff) answered ·

1 Answer

Grid Lost Alarm

Hi, I got a "Grid Lost" alarm today but the grid power hasn't stopped working at any time. I see that the alarm has ocurred when the inverter has gone from Passthru to Inverting state. This has never happened before, so I understand it must be a bug or a new option.


Can someone help me please?


Thank you

Javier Pardo asked
Javier Pardo edited ·

0 Answers

Grid Code Password

Hi All, I need to change the Grid code on My Multi-plus To "None" As I now intend to use it with a generator as well as other AC Source ,I am unable to contact the original supplier of the Multi-plus. Can any supplier supply the password ? I am at a loss here.

taz10002 asked
lubomer69 commented ·

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
Noisy Boysie commented ·

11 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 ·

3 Answers

Quattro drawing less power from grid

After almost 3 years, I finally have grid power.

For some reason, it's weak voltage (~185v) but i'll take that over a noisy genset.

Because I can't feed in, i've connected the line to AC1. I've raised the limit to 20Apms, but it acts very weird - sometimes it goes up to 3kw drawn from the grid, sometimes it's ~1.5kw, but usually stays around 2-2.5kw.

I've tried with all 3 phases and it acts the same.


I understand that I am at the end of a very long line so the voltage is now great, but I don't see why the quattro can't pull more amps from the grid? Any what's really strange it's fluctuating...

[image]

iromeo asked
Daniël Boekel (Victron Energy Staff) answered ·

3 Answers

How to use grid instead of battery in an ESS system?

I would like to set the system to keep the batteries fully charge, and use the grid to compensate for the solar when required. and save the batteries for when the grid is not available

luszim asked
warwick answered ·

2 Answers

Sheduled battery charging based current grid usage

Hi,

I was wondering if there already is some posebility to charge my battery without going over 2,5Kwh on grid usage.

This limit will be on our head soon even on night usage so i would try to stay bellow the 2,5Kwh limit even when charging the battery combined with the current grid usage.

stijn-dhondt asked
cristimv answered ·

2 Answers

Grid monitor not showing / sending alarm

Hi all, I have a Quattro system with Venus GX and want to know if there is a cut on my AC grid line. I activated the "grid fail monitor" on my Venus GX and disconnect my grid energy but nothing happens.

I can't see any alarm saying that my grid is OFF or an email with the alarm.

There is no alarm in VRM portal or my Venus GX.

Is this option to know if I have a cut off of my grid power? If not, there is any option to know when I haven't energy from grid?

Thanks in advance.

Javier Pardo asked
Javier Pardo commented ·

1 Answer

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

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

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 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

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