Combining solar panel systems

[bldewit]

Hello,

Within the next few weeks we will be installing a second set of solar panels with it's own inverter. I can add this system to my Domoticz as a seperate unit, with it's own sensors, no problems there.
Additionally however, I would like to have a set of sensors that represent the total yield of both systems added together.

What would be the way to achieve this?

Many thanks!

Verstuurd vanaf mijn SM-T590 met Tapatalk

[willemd]

Create some dummy sensors and use a dzvents script, triggered by change in your solar panel sensors, to add the values together and store it on the dummy sensors.

[bldewit]

Would you suggest singular dummy sensors for each value i wish to monitor or add a dummy Solar sensor? In the last case, how can i find out the variable names for the values i need to add?

[waltervl]

This is the Dzvents script I use to combine my 3 inverters and put the value in a dummy custom sensor. You could make it fancier by using an energy counter but that makes more calculations needed that I did not want to do.

Code: Select all

return {
      on = { 
        timer = {
           'every 10 minutes'            
        },
    }, 
    execute = function(domoticz, device, timer)
	-- Replace between () the idx or 'name' of your solar panel devices or put -- in front of it if you don't use it
    	local vandaagKwhzon = domoticz.devices(141).counterToday -
    	local vandaagKwhzon2 = domoticz.devices(184).counterToday 
   	local vandaagKwhzon3 = domoticz.devices(478).counterToday
 	
 	-- Create a customsensor with Kwh as variable and replace the idx or 'name' with your device name or idx
    	local zonTotaal = domoticz.devices(367)
        
    	-- calculate total kWh
    	local kwhOpbrengst = tonumber(domoticz.utils.round((vandaagKwhzon + vandaagKwhzon2 + vandaagKwhzon3),2))   
      
    	-- update total custom sensor
    	zonTotaal.updateCustomSensor(kwhOpbrengst)
    end
} 

[bldewit]

Looks superb, thx!

[bldewit]

I added a custom sensor type Usage Electric. With the script above i get following message:

"2024-02-28 18:30:00.473 Error: dzVents: Error: (3.1.8) Method updateCustomSensor is not available for device "Solar Total Yield" (deviceType=Usage, deviceSubType=Electric). If you believe this is not correct, please report"

Have i done something wrong?

[waltervl]

I made a custom sensor. So nothing electric.
https://www.domoticz.com/wiki/Dummy_for ... tom_Sensor

[bldewit]

Created a new sensor type Counter, same error message...

[waltervl]

Create a sensor type "Custom Sensor" as shown in the wiki link.

[bldewit]

Create a sensor type "Custom Sensor" as shown in the wiki link.

Right, got it now, that did the trick!