ESS

Dear friends,

I have experienced a problem with a customer's ESS system. Multiplus and Fronius inverters are connected in parallel to the grid. There is a TOPzS batteries installed. ET112 meter and BMV700 is installed too.

My customer told me he noticed 2 power outages. I think the problem comes from the BMV monitor, but a problem from the grid meter has more sense as I have read in FAQ4 from ESS manual. I attached pictures from the VRM portal:

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The previous night of a power outage, I found some error from the BMV monitor:

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And this 25th april when I enter in the VRM portal, It showed an error message in a red window, it says something like "a device is trying to send data". I had to restore the token authorization in order to solve the problem But before restoring the token, I noticed this:

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I called my Victron Seller in order to request them to write to level3support mail. But I have no news and no technical explanations.

Please, could you help me? If you need more information, please let me know.

Best regards,

Daniel.

I have had a Multigrid 48V 3kVa working flawlessly in an ESS system with a BYD battery for about 12 months.

A couple of days ago there was a power outage that lasted for over 6 hours.

The system stayed up during that time. When the mains grid power came back. The system switched over from inverter mode to pass through mode and stopped the discharging of the battery.

Why might this be?

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I currently have 5KVA Multiplus with a 150/70 VE.Can MPPT charge controller using ESS with CCGX.

My current VRLA batteries are in need of replacement and was looking at replacing them with Pylontech US2000B or US3000 batteries. According to this article its not possible

https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom

Is this still that case as it its not possible at all or are there limitations?

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 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?

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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~

Hi can someone please help!

I've currently got a 10 Kw solar edge pv system and would like to add batteries cheaply.

I've bought a quattro 8KW inverter/charger and some LiFePo4 batteries, for a AC coupled system.

I want the batteries to charge when excess power is going to the grid and discharge when there's not enough solar. Am i right in thinking i only need 1 AC connection to the quattro as it will only ever discharge or charge. If so which would be the best connection point.

Thanks

Simon.

hi, when charging or discharging battery in ESS mode, EasySolar 48/3000 / 35-50 randomly switches mode - float / discharge, bulk / discharge ... This is repeated approximately once time in 3 minutes. Behavior is the same as at minimum power and at maximum power.

The strange behavior of the inverter is seen on the video

Firmware on all devices is updated. I use 1f grid meter and Fronius Primo in AC OUT, grid setpoint -20W. In several posts, a similar behavior of the inverter has been solved, it has always been solved by new firmware. I have the latest firmware - 433.

Please help me what to do, or if it is a standard behavior. Thanks Ondra

(I apologize for my English, I am not a native speaker )

I have a SMA SB Tl21 series solar inverter which has a default setting of 51 Hz for Start of Frequency power control and 52 Hz for end frequency for power control. What settings are recommended then on the Multiplus for "Start reducing Power Frequency", "Output Power reduced to minimum Frequency", and "Converter will disconnect when higher than Frequency" ?

Hi Guys,

With version 2.30~43 my external control scripts of ESS stops working - the Victron never enters charging mode. I wasn't watch the unit closely so I don't know if the other modes are working.

Thanks,

Pieter

I'm testing batteries with an ESS system: Quattro 48/10000, Venus, CANbus BMS

When testing 12s batteries, in ESS mode the system discharges until about 41 volts, then tapering down DC current and holding voltage there. I've searched for sustain voltage, cut off voltage, etc., all is set to 36/37 volt.

when adding a load to the output, the unit uses grid-power to provide the load, actually going over the set Input Current limit.

Only when switching off the Grid, the system uses the battery down to the set levels (stopping at 37V)

Is there a setting somewhere I missed? or is it an undocumented feature?

some lithium batteries have quite a bit of capacity between 41 and 37 volts, it's good to know if we're able to use this in peak-shaving systems.

Hi, I am having toughts of running 2 x Multiplus in paralell with a single phase system, and maybe expanding up to a total of 4 later on. Using 1 source of single phase AC (230V) from grid.

I have a couple of questions:

1. When running ESS, can both Multipluses feed back into the grid (doubling the normal feedback contra using only 1)?
2. The transfer switch when grid is on, will that be "duplicated"? When I use 1 multiplus, the transfer switch is 32A when grid is connected. When I use 2 in paralell, will I get the same as 2 x 32A transfer switches? Or is there something im missing?
3. My phase coming into my house is fused with 63A, therefore I would like to use as much as possible from that before supplying from battery (powerassist). So using 2 x 32A fuses (1 for each multiplus) should in theory give me 7360W pr multiplus of grid use, and 2400W of non-grid use? Or did I misunderstand the concept of transfer switch?
   
   
   Thanks in advance :)

Hi everyone,can someone please help clarify how it is possible that the combined battery usage and grid usage is only reflecting as about 30% of actual critical loads running?

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Is there a way to make a ESS system switch to mains supply if there is a preset load for a preset time. ?

I have a Easysolar 5000 with lead acid batteries and I can grid feed. I am running ESS with keep batteries charged. I have set the float voltage to 54V and the float voltage on the charge controller .4V higher. I have 5.28kWp PV installed, but the PV production only goes up to roughly 3kW at 10AM and then drops to 2.5kW till the late afternoon. When I discharge the batteries a bit the PV opens up but only until the batteries are charged again. The system rarely grid feeds more than 2kW. I have tried changing the ESS setting to optimized and cycling the batteries to 95% but the solar still doesn't open up. Grid setpoint set to -5500W. Tried with and without DVCC, no success. Any suggestions?

Hallo,

I have changed my one phase system to three phase system with three multiplus2, 3kva version. Using one battery, CCGX. My problem is the grig is connected but does not want to go thru. Acting like a off grid system. Any help? See pictures of my settings. Ess assistant is in each multiplus.

Thank you for help.

Update: Do I need a current sensor installed to each Multiplus 2 to connect the mains instead of being in inverting mode?

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I do not have an ESS system nor have I applied any ESS setting to my system yet my for the first time my SmartSolar MPPT 100/50 is showing a State of “ESS”

Why would this state be reflected? I assume it’s incorrect. Is there a way to change this?

Note: I have a CCGX and Mutliplus.

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I Am using ESS in an off grid system with hybrid batteries.

I only discharge till 50% Soc with Victron Quattro

My question is, while configuring the ESS, should I define the Absolute or the Useable Capacity?

Thank you

I have three Multiplus-II in a three Phase setup. One Octo GX and yet two MPPT 150/35. Setup like this:

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Six Pylontech U2000 with CAN connected to the Octo. VE.Direct to the MPPT. VE.Bus to the Multis.Current Transformers on the Grid intakes to the House connected to the correspondending Multi.

Actual Firmware on all Multis/Octo/MPPT

Goal: Optimize Self-Consumption.

Commissioned by QuickConfigure and the appending VE.Configure3. Set up ESS assitant on the First Multi and sending that Configuration-File Step by step to the other two Multis.

Grid Settings Germany with internal NS

ESS is shown on the Remote Console of the Octo. Battery is shown, SoC etc. everything fine so far.

Parameters on Chargers and ESS for the Pylontechs are set as shown in https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom.

Baterry Mode optimized without Battery Life. Feed in excess solar Power ON. Minimum Discharge SoC 50%

Problem: When I switch on the Conection from Grid to AC in 1 the LED shows that the Inverter is swichted off and the Charger is switched on. The Remote Console shows that the Charger is pumping the maximum Load into the Pylontechs ALTHOUGH the SoC is 82% and the Solar Input is 300Watts...

How can I tell the system it should take the energy from the Batterysto feed the House-Grid down to SoC of 50% and NOT to Charge the Batteries via AC in????

ESS assistant is used in optimized mode. Grid shall be used when load exceeds nominal output-power of the MultiGrid.
In settings/ess inverter limit power is set to 2400 W ( nominal load of MultiGrid II 48/3000), but grid is already used when load exceeds 2000 W
When inverter limit power for example is set to 1000W, system works fine. Grid is used when load exceeds 1000W.
Why is the power limited at 2000W ?

Hi! I have a question regarding the functioning of the parameter 'Active SoC limit' that can be found in the ESS. While in mode 'Optimized (with BatteryLife)' I started playing with the different parameters to test the installation, and in particular with the parameter 'Minimum SoC (unless grid fails)'. At first, both 'Minimum SoC (unless grid fails)' and 'Active SoC limit' had the same value, but after increasing the value of 'Minimum SoC (unless grid fails)' up to 100 %, the 'Active SoC limit' became stuck at 80 %.

I would like to know what does this parameter 'Active SoC limit' really mean and what's the functioning behind, so I can have a better understanding of it once I change the value of 'Minimum SoC (unless grid fails)'. I have already read the ESS Manual but it is not very clear to me yet.

I would like to add that my installation works mainly disconnected from the grid except in a few occasions that it is connected for short periods of time. I don't know if that has anything to do with the system recognizing this and, thus, trying to set a high value according to this characteristic.

Thanks!