Hi, I have 3 phase system with Quattro 48V/5000VA, 2 Victron LiFePO4 batteries( 25,6V/200Ah), running ESS with Fronius ongrid inverter connected at the AC input of Quattros. The meter is Carlo Gavazzi EM24(with CTs). The problem is that in case I'll set "Fronius zero feed in" to ON, PV production is reduced to the necessary load, but even when it is a lot of sun, the charging battery is limited very low or zero. In the case I switch off the zero feed in, it is working well, but I don't want to export a lot of power into the grid. It seems that the smart meter is faster than Quattro and first is ordered zero feed in and after that is not enough power to charge the battery.

[image]

I recently installed a three phase setup with three MultiPlus-II 48/3000/35 (fw 459) with four Pylontech US3000 battery modules.

Everything works. During normal loads ESS balances the grid setpoint and optimizes for self-consumption just fine. Now I discovered an unexpected behaviour regarding what happens when one of the Multis reaches it's load limit during grid connected inverter mode while the other two are not doing much at all.

What I expected:
When one Multi reaches it's load limit additional power is taken from the grid. ESS balances to the configured grid setpoint as the other two are able to provide additional energy.

What happens:
One Multi reaches it's load limit at 3000VA. Additional power is taken from the grid. The other two Multis are only providing their (very small) loads. Power is taken from the grid without balancing to the grid setpoint - energy is bought from the grid altought it could be taken from the battery.

My batteries can provide around 7000VA easily so this can not be the problem. Also the system balances out during normal operation just fine. Is this expected behaviour for ESS? If so, why? Makes no sense to me.

Good Day

I have a PYLONTECH 8kw 48V battery setup with a Victron Multiplus on ESS, connected to Solar.

One issue I have is that when the mains supply fails and am running on batteries at night, I cannot limit the level of discharge (batteries discharge below 80%).

I tried adjusting the dc input low shutdown on the Multiplus but did not work.

Please advise. I would to limit the battery to lowest 85% discharge level.

Hello,

I have a system consisting of the following (1) Venus GX, (4) 10 KVA Quattros, (3) Fronius 8.2 kW Primo inverters (connected on the AC-Out) and (24) Pylontech US2000B batteries (4 piles of 6 batteries connected via the LV Hub to the Can Port).

The system constantly switches the "Mains" off whenever the load on AC-Out 1 spikes. It goes into "Inverting" mode and acts as if the grid has failed even though power remains at the AC-In line. As a result, the ESS function ignores the Battery Optimise SOC limit and draws all power from the batteries causing a low battery alarm and shutting off the system entirely. This basically creates a "power cut" at the site which is easily rectified by flipping the bypass switch and allowing the grid to flow directly to the house as if the system was not installed.

This can not be how the system is intended to operate. What can be causing this to happen?

Thanks.

Hi from a longtime Victron reseller in Colorado. I have a solar home sales opportunity where there are no code inspections--hence little worry that Quattro has no American style UL1741 label.

AC coupling or DC coupling is still undecided but either way I need approval to "sell" excess energy into the "mains". Lawfully grid-tied Victron may be a first for this side of the pond.

The public power company wants compliance with "IEEE Standard 1547 Guide for Distributed Generation Interconnection". Here's a link:

https://standards.ieee.org/standard/1547-2018.html

but is that equivalent to any of these grid code standards in VEConfig3?

[image]

The mains engineers are more likely to approve the intertie if I can document Victron compliance with IEEE1547.

How about that Victron Energy Staff? Any thoughts or help? Thanks in advance~

2 Quattro in 120/240 (first L1+N, second L2+N)

2 Fronius 120/240 in parallel (each has L1, L2, and N)

CCGX sees the Quattro as one system

CCGX sees the two Fronius as separate inverters

[image]

In the "PV Inverters" config I have to assign the PV inverters to a phase:

[image]

But of course this makes no sense, because both Fronius inverters operate across both phases.

I feel like this is throwing off the zero feed-in and phase compensation features, as well as the reporting.

If I go into one of the inverters to look at the power:

[image]

1575W is the total power that inverter is making on both phases. ESS is counting it all towards phase 2.

I'm looking for a grid meter for use with Energy Storage System design. I live in the US, with split-phase 240VAC power, my home has 200A service, phase angle is 180*.

Would the Carlo Gavazzi EM24DINAV53DISX work? I wasn't sure since it's marketed as 230VAC 3-Phase compatible which is not available in the US.

Hello!

I am an electrician and planning a ESS-system for my new house in Austria.

3x Multiplus-II 5000 (3-phase) with 48V Lithium-Battery (maybe some Pylontech US3000), with about 6kWp Fronius Symo PV-Inverter connected on AC-Out for higher self-consumption and UPS in case of grid failure.

Is there an extra anti-islanding-relay necesarry, or is the anti-islanding-protection from the Multiplus II enough? I only find the TOR D4 Certificate for Multiplus-II 3000!

Thanks for the Answers!

Erwin

HI my name is Jake

I am an off grid installer and i have a question about something i am trying to do on one of my sites.

I have recently installed a off grid system on a remote station in outback Australia that consists of

1 x Quattro 48/15000

3 x 250/100 mppt's

4 x byd commercial 13.5kwh battery boxes

1 x colour control GX

1 x 18kva generator

the system is laid out at the moment with the generator shed about 100m away from the battery shed with an ac feed running between. i have put a wireless relay in to stop and start the generator from the colour control and all is working fine.

my problem is that the customer used to run his whole property from the generator alone and has some small loads to an old house and a bore pump that come directly from the generator shed switchboard where as the rest of the main loads come from the new battery shed switchboard. as i have it set up at the moment those small loads are only live when the generator is running. i have done a bit of reading and started thinking about ESS systems and how they can feed power back down input 1 and was wondering if i could do the same.

The way i understand it i can set up the ESS assistant and disable Loss of Mains in the inverter settings which would give me 230v from the inverter to my input 1 terminals. i would then install a relay on the generator to disconnect it from the input when it isnt running either from manual start or auto start to make it safe. my questions are as follows.

1. is this possible first of all?

2. when the generator does start how does the quattro know its now connected??

3. how does the quattro know not to feed power into the generator??(maybe Carlo Gavazzi meter)

4. do i need a carlo gavazzi meter at either the generator or the small loads that need to be fed through the inverter input.

I hope this makes sense and im open to any suggestions, im just trying to find a way to feed the loads in the gen shed safely without running the generator all the time.

any help would be greatly appreciated

I have EasySolar 24/1600 and I have same problem like this EasySolar ESS randomly switches charging-discharging mode. This problem is only in ESS mode, in HUB1 mode works stable and without problems. The problem occurs, when it is broadcast remote command on the 216,7 Hz. Tone frequency 216,7Hz is superimposed to mains during broadcast remote commands. This tone frequency is used most of the region in Czech and Slovak Republic.

Hi there

I have 4x3.5kWh Pylontech batteries, and they perform very well. This is more or less 280Ah @48V.

On a number of occasions, I have seen the SOC remain at 88% as per the Venus remote console, even when charging at 30-40A (28A is about the C10 rate). Charging at 28A should result in SOC moving up by about 10%/hour or 1% every 6 minutes (more or less).

But SOC never goes above 88% that day. I have observed reported battery volt go up from 50.8 to 50.9 to 51.2, but the SOC remains at 88%. It only ever gets "stuck" at this specific 88% SOC. IIRC 51.2 is about 95%.

Since the battery voltage does go up, I assume the batteries are charging (they are accepting the current). Is this perhaps an SOC algorithm/BMS issue?

I have not been able to test if they stay at 88% longer as well when they start to discharge at the end of the day.

Priority solar in ess but connected to ac what happens to ac2? does it still feed from the grid

I am in the final stages of designing a battery backup system with the Multiplus II. The main purpose of the Multiplus II would be to have a backup power source for when the grid goes down. The Multiplus II would be fed from the grid to ensure the batteries remain fully charged. This would be the first stage of the install and gives me a very good indication of the power draw throughout the day for my critical loads.

The second part of the install would be to connect a PV system (MPPT) that would keep the batteries charged throughout the day. I would then allow a certain % discharge going into the evening. The PV array will be sized based on the power draw of the critical loads and the solar yield on an overcast day on the shortest day of the year (New Zealand - relatively high sunlight levels). On sunny days there will always be excess power available and I would like to dump the excess power into a hot water cylinder. I am looking at including the fronius Ohmpilot that would be connected to the AC-out (non critical load) of the Multiplus II. This way there will only be limited amount of power going back into the grid. I will only be installing the fronius smart meter and leaving out the Victron smart meter upstream of all the electrical loads as the fronius smart meter would be the only meter that needs to determine if the load is dumped into the hot water cylinder or if it is being exported back into the grid. I assume this is correct? Below is an overview of how I would like the final system to look:

[image]

I look forward to comments and feedback on the above.

Hi I have set up a system on my boat I have 1600W solar Victron MPPT, 600Ah 24v battery,Quattro inverter and Venus GX and bmv 712. And 10kw generator The question I have is when Im on shore power the batteries are fully charged is there a way of prioritising the solar over the grid feed in as many marinas charge 40 cents a Kw hour other then setting up an ess assistant I don’t want to feed in just save money, I’ve read all the ESS documents just trying to get my head around it. At the moment I just unplug the shore power during the day.

Hi there,

Our system is as below

- 12 solar panels 250Wc Trina Solar

- 8 batteries AGM 250Ah each

- 1 Easysolar 48/5000

What we will like to do:

• Solar consumption priority, 100% self-consumption
• Call to AC grid when the battery voltage drops to 75% for 3 minutes and loads exceed 2000W, then reconnection when the battery voltage returns to 90% and loads below 1500W
• Battery protection: disconnect batteries when discharged at 35% , reconnection when 50%
• No battery charge by the AC grid only by the batteries

we have used the tool Virtual Switch to configure but when you download the configuration the system is showing that the system is "blocked" and no more power coming in/out of the easysolar.

also it's seems like ESS would be the right tool to use, but we don't have it in our assistant lists in VE configure, also how to deal with country code and other parameters ?

here below what's we have configured.

[image]

[image]

[image]

[image]

[image]

we are little confused as our victron dealer can't help us since two weeks we are asking support from him

I hope getting a clear answer and procedure from victron support.

the matter is urgent as we are currently on site

many thanks for the support

Hi

I recently replaced an 8KVA Quattro for a 15KVA one, as my clients needs had been growing steadily recently. It is a monitored ESS system. Since its installation I am seeing regular overload warnings even though the loads are maximum 7KW. Often showing overloads at under 3000w. It shuts down at least once a day and did it again last night at midnight with a 1500w load. VRM data is giving me no indication of why it is doing this.

Anyone come across similar situation

We have our system setup and have been using ESS for years now. We have critical loads on AC output 1 and non-critical loads on AC output 2 so that critical loads continue to receive power during grid outages. Today for example we have a scheduled power outage for the whole day.

We have more than sufficient PV/battery power (over 2500w) now to also power the AC output 2 loads (around 1200w).

Is there a way to manually enable AC output 2 during such times? If not this might be a nice feature to add to the ESS settings on the CCGX.

This is what is currently being used without anything on AC output 2:

[image]

[image]

Using Quattro 5000 / 120 V with an updated firmware and ESS assistant for a 48V system.

We are facing the problem of while having a high AC load and there are no available solar Energy inputs so we are running purely on batteries "having ALWAYS a low battery warning LED flashing - and of course on the CCGX- even that the SOC of the battery from the BMV is higher than 90% and the voltage is ok as well"

1. is there a way to avoid this wrong indicator on the inverter?
   • Taking into account that the ESS settings for the dynamic battery control is modified already based on our battery type and the low voltage alarm reseat value for the inverter is set to 3 V (instead of 1.2 V default).
     
2. In case we have to live with this fake warning, How can we avoid getting this warning on the CCGX?

Appreciate your advice

hi this is ESS system with 5kVAnmultiplus II and 250/100 charge controller and BYD lithium battery.

Why multi is converting as much as he can with plenty excess power (battery full and 5kW from solar ) even I select "limit inverter power" to lets say 1kW ?

this limit is only for supplying house loads ? do not work for export ? Multi will be exporting all he can with "feed-in excess solar power"selected ?

Hi Im setting up my first ESS system ive done plenty of off grid intalls before but im having a bit of trouble with this, everything is on and visible in the CCGX all firwares are to the latest version, and had 10kWh of BYD batteries but the inverter is remaining in Passthru? All settings have been set as outlined in the Victron BYD manual including the grid code, the system can see power flow in and out of the house but isnt charging or disharging from the battery? I have wired the mains to the house to AC in and have nothing on the AC outs at present. Any help would be ideal. Thanks

In the docs it says the Generator is connected on input 1 and the grid on input 2. Is this a limitation that can be changed?

Is ESS compatible with systems that are setup with phase floating w/ return to original phase?

I have a grid-coupled ESS system, with PV on the AC output of the MultiPlus and feed-in to the grid enabled. So I have frequency shifting enabled, in case I get more PV power than I use in a power cut situation. But normally the frequency should never shift, when the grid is working, right?

Well, my alarm clock is off ALL the time. Around 10 minutes per 24 hours, I guess.

How can this happen? And what can I do to solve this?

I have a ESS with two Quattro and solar power. I have feed in excess power enabled.

This has been operating for two full months and the house meter has

1. 941 kWh Total Active energy consumed (from grid)
2. 600 kWh Total Actve enery fed (to the grid)
3. 40 kVARh Total reactive energy consumed
4. 330 kVARh Total reactive energy fed

I can understand some consumption of reactive power due to some pump motors we have, but not the export of reactive power.

Any help on this is much appreciated.

Hi Community !

this is my first post here , cause a am not able to find an answer to my question till now.

I have a Multiplus 2 and a Fronius AC-IN coupled PV inverter. The whole System is in ESS Mode.

There is a 3 phase meter (ET340) on the main AC input of our house.

Everything seems to work fine, except the readings on the Venus in high load conditions:

[image]

As you can see the multi is drawing 2500 Watts from the battery and feed it back to the grid via L3. The Load measured by hand with around 2300 Watts is on L1 -> which is measured fine by the ET340. The problem is on "ac-out" side. There the load is suddenly 4579 Watts on L1.

The Fronius inverter is in zero-feed-in mode. (i think he has nothing to do with that)

Any idea how i can fix this ?

Thanks a lot !

Jens

Hi there,

Just installed an ESS system with a Multigrid II 3000, and a Fronius Primo 5.0 (on AC-in) (I know the 1-1 rule, but's running on the AC-in, so no problem).

Fronius is communicating with the ColorControl, everything looks fine. Enabled "Fronius zero feed-in", but the "Fronius zero-feed in active" remains "NO". It only works if installed on the AC-Out?

Any clue?

Thanks!

Pedro

Question: I’m running an ESS setup with ACcoupled PV with feed-in allowed. First I was using only a mppt but for some reasons I temporarily disconnected it and only using ACcoupled PV on ac-out.

Battery setting is optimized with batterylife(because of passive balanced lithium). Al worked well, but now there is only ACcoupled PV available the systems thinks there is no incoming power and it raises the active state of charge limit so it won’t discharge anymore while there is sufficient charge current available each day.

For now I set it to optimized without batterylife but that’s not the way to go. What is going wrong here?

Setup:

Multigrid-2 48/3000/35

ACcoupled PV 440Wp on AC-out

Bmv700

RPI with Venus

8kWh LiFePo4, passive balanced

MPPT150/35(not used, but connected)

I think going forward this will be a very popular question: How to combine/integrate a Wallbox-Charger in/with an ESS System? What I'm not looking for are answers like: use the internal relay of a MultiPlus to turn on the charger when the ESS Battery is full.

It should be a smart integration in which the user can dynamically set the priorities, like:

1. charge the e-car using the remaining PV-power (ESS battery has 1. priority)
2. charge the e-car using all available PV-power (ESS battery has last priority)
3. charge the e-car as fast as possible

Options 1 and 2 would mean that the charging performance is constantly changing.

-----

Possible solution: use an external control unit which communicates with ESS and the Wallbox via Modbus. A control unit could be an OpenHAB system. I'm using such a system successfully for my smart home... A programmable Wallbox could be KEBA P30 x-Series.
The idea is to write a simple script which constantly reads some ESS figures, calculates the remaining power and sets charging power within the Wallbox. Option 1 could be realized quite easy, I guess. Any objections? Option 2 is more complex, but I think it could be solved as well. Option 3 is done without involving the ESS.

-----

Now, the big questions are: has anybody out there done this task already and can share the solution? if not, what other ideas do you have to solve the above challenge?

Many thanks in advance!

Hi,

on Pylontech Page is written, that only Shared Voltage Sense (SVS) has to be turned off. (https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom#venus-device_settings)

[image]

On Color GX Page SVS and STS has to be off. (https://www.victronenergy.com/live/ccgx:start#introduction_and_features)

[image]

If i disable STS, the Multiplus will get the wrong battery temperature. This can be shown via Modbus or VRM. If i enable STS, the Multiplus shows the same Temperate as Pylontech BMS is reporting.

Now i have set it like this:

[image]

What is the correct STS setting?

Thanks a lot!

Hi

i running a ESS (MultiGrid 48/3000 FW459, VenusGX FW v2.31with EM24) with AC Coupled third party PV Inverters (via ET340 and ET112) and a Smart Solar 150/35 v1.39 and a BYD B-Box 5.0kWh. (DVCC enabled, SVS disable, Smartsolar has BMS controlled)

The DC Coupled PV system is oriented south and could be enlarged by approx 900 Wp, since currently only 1,8kWp is installed. Maximum charge power to battery is limited at 2000W fixed due to the 35 Amps - i know ;).

In the ESS Settings I enable " Feed-in excess solar charger power" but soon i discovered the the typical behavior of the system was to charge from the East oriented AC Coupled inverters, which means, the the battery is full, sincce there is enough excess. But the south orientated DC coupled PV System was dearted by over 50% due to battery being at SOC 100%, even with the enable option of "feedin excess DC Power". Over have of the production of the south oriented DC coupled PV is derated (see pic attached, redline is potential solar production).

[image]

To prove my hypotheses i changed the ESS Setpoint to activly discharge the battery into the grid, thus a lower SOC than 100% is realized. this enables the BMS controlled Smart Solar to use the full potential of the PV system. (previously 340W production goes up to 900W Production).

See my screenshots and notes

ESS Feed-in excess solar charger power - not full potenial.pdf

Conclusion:

I presume that the Mutligrid doesnt discharge/feedin as much power as the full potential of solar available on the DC side.

I would presume that the voltage Gap between SmartSolar and Multiplus isn't high enough for Multi to discharge the battery more but to keep it at 100% and though making it possible for the SmartSolar to feedin more of his potential solar power.

So propably i will not add any more Modules to the Smart Solar or install another SmartSolar, but install another PV Inverter AC coupled.

If anybody has the same Issue please let me know!

If anybody has an idea how to optimize the use of the DC coupled Solar to feed into the grid, please let me know! I thought already of an external PLC writing the ESS Setpoint into the Modbus register, to actively reduce the SOC during the daytime, to make more use of the DC coupled PV System.

THX

BR

Ossi

A recent customer installation, a 10kVA Quattro with 2 x SmartSolar 250/100, 30 x 275W poly modules and 19.2kWh Lithium batteries, running on ESS - the first grid failure resulted in their TV, satellite decoder and computers shutting down and having to reboot. The switchover should happen within 20 milliseconds but it took more like 250 milliseconds, lights dipping visible to the human eye. Any suggestions?