question

beeda avatar image
beeda asked

On grid only if battery 100%

MultiPlus-II 48/3000/35-32

SmartSolar MPPT Ve.Can 1500/100 rev2

Battery Pylontech LiFePo


Hi


i want to set my Victron to is ON Grid only if Battery is full charged ca 100%-98%.


It is possible ?


Thanks


Battery:


100-98% - On Grid

98-20% - Off Grid

20-0% - On Grid


Overloaded - On Grid


Off Grid - I mean island mode

offgridmppt overvoltageisland mode
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2 Answers
matt1309 avatar image
matt1309 answered ·

HI @Beeda


How would you ever get to <98% if you're using grid above 98%? As in if the grid goes down?


The way I would do this is with node red.

if( SoC => 98 || SoC <= 20){ //if greater than 98% or less than 20%

//set ESS mode to Keep batteries charged.

}else if (SoC >20% && SoC <98%){ if soc in between 20 and 98

//ESS mode Optimised without battery life

}


4 comments
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beeda avatar image beeda commented ·

For this Logic funktion i need any special thing, or wher can i this sett ?


I do not use Grid for Baterry charging.


I use Grid only if Solar power do not go or battery is empty and if is my system overloaded. I want tu be in Offline mode (no Energy from my Electricityprovider) if i have power from Battery or Solar or kombination.


If Batery 100% charged is. I want to sent energy to my Electricityprovider i have Virtualbattery (I store Energy with my Electricityprovider).
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janieronen avatar image
janieronen answered ·

Agree with matt1309 that nodeRED is best way to build custom functionalities.


But what is reason to go island mode? If you just set Grid set-point to 0 and limit feed-in to 0 on those periods when want to not use grid. That can be achieved by using nodeRED setting these parameters.

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beeda avatar image beeda commented ·

Reason is to save money.


Because if i am On Grid and even though i have Enough energy from Solar or Battery. The system still use ca 10-15% energy every day form Grid. I talk about ca 1,5kWh (per year 0,55MWh)

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Victron Offgrid page

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