LUA – Virtual Solar Battery: simulate the presence of a battery for storing harvested solar energy

[jake]

Thanks for trying the script.

It doesn't update for this line:
2022-11-01 22:35:59.859 Status: dzVents: Debug: Hey solar battery: scriptInterval value increased to inf seconds to have a maximum deviation of 10 percent

It mentions that the time interval to update the solar battery is updated to 'inf' seconds. I don't understand where the infinity? word comes from, I think the dzvents 'round' function creates that for some reason.

Can you please check the domoticz user variables 'inverter power' and the value in the lua script for 'script interval'. I'd say to start with a 2000W simulated inverter power and a script time interval of 60 seconds. (decreasing the time interval too much will reduce the accuracy of measurement of Wh, due to small amounts of Wh in such a short time. The counters in domoticz can only handle a minimum value of 1Wh. If you measure every second, this means that 1Wh in 1 second means 3600W of power, a very rough way of registering data. Combine that with the fact that data gets compressed to 5 minute intervals by domoticz very quickly and you realize that very small intervals don't make sense.

[THBR]

Hello Jake,

Thans for responding!

I tried different settings as suggested by you, unfortunately not the desired effect either. The Domoticz log also remains unchanged....

Apparently I'm the only user of your script with this problem?

Gr. Theo.

[jake]

Please share your script and make a screenshot of your user variables. Problems are there to be solved

[jake]

Oops, I only see now that you shared your user variables as well and there I see the problem: you chose an inverter capacity of 0 Watt. This means that your 'battery'won't be charged or used. If you don't want to deal with limitations to the amount of power that can flow from and to the battery, choose a big value of, for instance, 10000 W. That should do it.

I will have to add a warning for this in the script, to prevent this error searching, like we just did.

[THBR]

Hi Jake,

Yes, now it works!

Sorry for the inconvenience, my mistake, should have read better!

Thank you very much!

Regards, Theo.

[jake]

Nice, for me it is also a learning curve, since I originally developed the script for my own situation. Preventing errors due to user mistakes, takes about as many lines as the primary code

[ubfssF]

My log shows an error, while the calculation seems te be done just fine. Any ideas?

The code I use:

Code: Select all

--version 0.1 02-04-2021: dzVents version of solar battery script
--version 0.1.1	03-04-2021: fix left behind variable and avoidance of power level > max inverter power level, due to rounding of calculation
--version 0.1.2 05-04-2021: changed a check for latest data storage from seconds to milliseconds to accommodate meters that update every second
--version 0.1.3 05-04-2021: Added a check to avoid big deviations in calculation when inverter power level is small while having
--	also a small script interval. Added more debug logging
--version 0.1.4b 10-04-2021: Description text fix + little preparation for future release
--version 0.1.5 11-04-2021: Lost energy due to battery and due to inverter size are now split and only combined during device update

--version 0.2a	14-04-2021: BREAKING CHANGE: 	-- 'Lost Energy' 'Electric + Instant + Counter' device need to be replaced by a 'P1-meter' device
												-- New 'P1-meter' device needs to be added to trace losses in limited battery inverter

--To be created virtual devices in the hardware section of Domoticz:
	local solarBattery_name = 'Virtual Solar Battery'		-- (1) Virtual 'Custom Sensor' device name for the 'Virtual Solar Battery'. Change axis label to kWh
	local batteryUsage_name = 'Virtual Solar Battery Usage'		-- (2) Virtual 'P1-meter' device name for monitoring storage in and consumption from the solar battery
	--local lostEnergy_name	 = 'Lost Solar Energy'	(No longer needed, will be removed in later version -- (x) Virtual 'Electric Instant + Counter' device name for the 'Lost Solar Energy'
	local lostBattery_name = 'Lost Solar Battery Energy'		-- (3) Virtual 'P1-meter' device name for the 'Lost Solar Battery Energy'
	local lostInverter_name = 'Lost Solar Battery Inverter Energy'	-- (4) Virtual 'P1-meter' device name for the 'Lost Solar Battery Inverter Energy'
	
--To be created User Variable in the Setup - More Options - User Variable section:
	local battery_capacity_name = 'SolarBatteryCapacity'		-- (5) User Variable name for the 'Solar Battery Capacity'. Type 'Integer'. Value in Wh (4kWh battery = '4000')
	local battery_inverter_power_name = 'SolarBatteryInverterCap'	-- (6) User variable name for the 'Solar Battery Inverter Power'. Type 'Integer'. Value in W

--Energy meter(s) management
	--name the device(s) used for counting energy from/to the grid
	--when a P1 meter is used for both 'from' and 'to' the grid, fill in this name for both lines! Else, fill in the name for both requested devices
	--Device name for consumed energy FROM the grid:
	local consumedEnergyMeter_name = 'Energie kWh'			--(7)
	--Device name for delivered energy TO the grid:
	local returnedEnergyMeter_name = 'Energie kWh'			--(8)
	--decide if energy consumption with an empty battery counts as 'lost energy'
	local emptyBatteryIsLostEnergy = 1 --(1 =  yes, 0 = no)		--(9)
	--decide if energy losses due to limited inverter power count with a full/empty battery
	local emptyFullBatteryCountLostInverterEnergy = 1 --(1 = yes, 0 = no) --(10)
	--Interval of running the Script
	local scriptInterval = 60 --(seconds. Minimum interval depends on update frequency of P1-meter. 0 = P1-meter update frequency) --(11)


-- 1 trigger for P1 meter with both consumption and production meter integrated. Otherwise 2 meters
	if (consumedEnergyMeter_name == returnedEnergyMeter_name) then
	 	meterName = consumedEnergyMeter_name
	else
		meterName = consumedEnergyMeter_name ..', '.. returnedEnergyMeter_name
	end


return {
	active = true,
	on = {
		devices = {
	--timer based devices
	--sensor based devices
		meterName,
	--setting devices
	--actuator devices
		}
--	timer = {'every minute'}},
	},
	data = {
		returnedEnergy = {initial=nil, history = true, maxItems = 1},
		consumedEnergy = {initial= nil, history = true, maxItems = 1}
	},
	logging = {
	level = domoticz.LOG_DEBUG, --domoticz.LOG_INFO, domoticz.LOG_MODULE_EXEC_INFO, domoticz.LOG_DEBUG or domoticz.LOG_ERROR
	marker = "Hey solar battery"
	},

	execute = function(domoticz, device)

---error checking functions ---

--check whether devices exist by veryfing their name
	if domoticz.utils.deviceExists(solarBattery_name) == false then
		domoticz.log('necessary device '.. solarBattery_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif domoticz.utils.deviceExists(batteryUsage_name) == false then
		domoticz.log('necessary device '.. batteryUsage_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	--elseif domoticz.utils.deviceExists(lostEnergy_name) == false then
	--	domoticz.log('necessary device '.. lostEnergy_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
	--	goto endScript
	elseif domoticz.utils.deviceExists(lostBattery_name) == false then
		domoticz.log('necessary device '.. lostBattery_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif domoticz.utils.deviceExists(lostInverter_name) == false then
		domoticz.log('necessary device '.. lostInverter_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif domoticz.utils.variableExists(battery_capacity_name) == false then
		domoticz.log('User variable '.. battery_capacity_name ..' doesnt exist. Script will end. Please add the user variable to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif domoticz.utils.variableExists(battery_inverter_power_name) == false then
		domoticz.log('User variable '.. battery_inverter_power_name ..' doesnt exist. Script will end. Please add the user variable to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	end

--Devices exists, now define devices/variable within Domoticz:
	local solarBattery = domoticz.devices(solarBattery_name)
	local batteryUsage = domoticz.devices(batteryUsage_name)
	--local lostEnergy = domoticz.devices(lostEnergy_name)
	local lostBattery = domoticz.devices(lostBattery_name)
	local lostInverter = domoticz.devices(lostInverter_name)
	local consumedEnergyMeter = domoticz.devices(consumedEnergyMeter_name)
	local returnedEnergyMeter = domoticz.devices(returnedEnergyMeter_name)
	local battery_capacity = domoticz.variables(battery_capacity_name)
	local battery_inverter_power = domoticz.variables(battery_inverter_power_name)

--Define script variables
	local oldConsumedEnergyMeter
	local oldReturnedEnergyMeter
	local newConsumedEnergyMeter
	local newReturnedEnergyMeter
	local energyBalance
	local solarBatteryValue
	local newSolarBatteryValue
	--local newLostEnergy
	local newLostEnergyFull
	local newLostEnergyEmpty
	local batteryUsedEnergy
	local batteryProdEnergy
	local batteryUsedWatt
	local batteryProdWatt
	local batter
	local deltaTime
	local maxBbatteryInverterEnergy -- battery inverter power x (time since last time the script was ran / 3600) in Wh
	local inverterLostEnergy -- lost energy to or from the grid due to limitation in battery capacity and/or battery inverter power
	local inverterLostEnergyProd
	local inverterLostEnergyUsed
	local inverterLostEnergyProdFull
	local inverterLostEnergyUsedEmpty
	local inverterLostProdWatt
	local inverterLostUsedWatt
	local _ = domoticz.utils._

--check if new created virtual devices are the right type
	if (solarBattery.deviceType ~= 'General' and solarBattery.deviceSubType ~= "Custom Sensor") then
		domoticz.log('created device '.. solarBattery_name ..'	is not of the type Custom Sensor. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif (batteryUsage.deviceType ~= 'P1 Smart Meter' and batteryUsage.deviceSubType ~= "Energy") then
		domoticz.log('created device '.. batteryUsage_name ..'	is not of the type P1-meter. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	--elseif (lostEnergy.deviceType ~= 'General' and lostEnergy.deviceSubType ~= "kWh") then
	--	domoticz.log('created device '.. lostEnergy_name ..'	is not of the type RFXMeter. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
	--	goto endScript
	elseif (lostBattery_name.deviceType ~= 'P1 Smart Meter' and lostBattery.deviceSubType ~= "Energy") then
		domoticz.log('created device '.. lostBattery_name ..'	is not of the type P1-meter. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
	elseif (lostInverter.deviceType ~= 'P1 Smart Meter' and lostInverter.deviceSubType ~= "Energy") then
		domoticz.log('created device '.. lostEnergy_name ..'	is not of the type P1-meter. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
	end

--check if variables are the right type and contain a good value
	if battery_capacity.type ~= domoticz.INTEGER then
		domoticz.log('User variable '.. battery_capacity_name ..' is not of the type INTEGER. Script will end. Please change the user variable to the type INTEGER and put a positive number in there', domoticz.LOG_ERROR)
	goto endScript
	elseif (battery_capacity.value == nil or battery_capacity.value < 0) then
		domoticz.log('Solar battery capacity wrong or <0. Now set at 2000(Wh)', domoticz.LOG_ERROR)
		battery_capacity.set(2000)
	end

	if battery_inverter_power.type ~= domoticz.INTEGER then
		domoticz.log('User variable '.. battery_inverter_power_name ..' is not of the type INTEGER. Script will end. Please change the user variable to the type INTEGER and put a positive number in there', domoticz.LOG_ERROR)
		goto endScript
	elseif (battery_inverter_power.value == nil or battery_capacity.value < 0) then
		domoticz.log('Solar battery inverter capacity wrong or <0. Now set at 4000(W)', domoticz.LOG_ERROR)
		battery_inverter_power.set(4000)
	end
	
	if (emptyBatteryIsLostEnergy == nil or (emptyBatteryIsLostEnergy ~= 0 and emptyBatteryIsLostEnergy ~= 1 )) then
		emptyBatteryIsLostEnergy = 1
		domoticz.log('internal variable emptyBatteryIsLostEnergy does not contain a value of 0 or 1. Script will use value 1 and count lost energy at an empty battery')
	end
	
	if (emptyFullBatteryCountLostInverterEnergy == nil or (emptyFullBatteryCountLostInverterEnergy ~= 0 and emptyFullBatteryCountLostInverterEnergy ~= 1)) then
		emptyFullBatteryCountLostInverterEnergy = 1
		domoticz.log('internal variable emptyFullBatteryCountLostInverterEnergy does not contain a value of 0 or 1. Script will use a value of 1 and count lost inverter energy at empty or full battery')
	end

--check if persistent data exist and is a number. The new 'zero' value will be updated further down the script
	if (domoticz.data.consumedEnergy.size == 0 or
		_.isNumber(domoticz.data.consumedEnergy.getLatest().data)==false or
		domoticz.data.consumedEnergy.getLatest().data < 0) then
		domoticz.data.consumedEnergy.add(0)
		domoticz.log('dzVents variable consumedEnergy was empty or did not contain a number. Now set as 0',domoticz.LOG_DEBUG)
	end
	if (domoticz.data.returnedEnergy.size == 0 or
		_.isNumber(domoticz.data.returnedEnergy.getLatest().data)==false or
		domoticz.data.returnedEnergy.getLatest().data < 0) then
		domoticz.data.returnedEnergy.add(0)
		domoticz.log('dzVents variable returnedEnergy was empty or did not contain a number. Now set as 0',domoticz.LOG_DEBUG)
	end

--give a new virtual devices a start load of 0 kWh and 0 W
	if solarBattery.sValue == nil then
		solarBattery.updateCustomSensor(0)
		domoticz.log('solar battery value is nil en will be updated to 0',domoticz.LOG_DEBUG)
	end
	if (batteryUsage.usage1 == nil or batteryUsage.return1 == nil) then batteryUsage.updateP1(0,0,0,0,0,0) end
	--if lostEnergy.WhTotal == nil then lostEnergy.updateElectricity(0,0) end
	if (lostBattery.usage1 == nil or lostBattery.return1 == nil) then lostBattery.updateP1(0,0,0,0,0,0) end
	if (lostInverter.usage1 == nil or lostInverter.return1 == nil) then lostInverter.updateP1(0,0,0,0,0,0) end
	
--Check if scriptInterval value is valid
	if (_.isNumber(scriptInterval) == false or scriptInterval < 0) then
		domoticz.log('value for scriptInterval is invalid (not a number, or < 0). Script will use P1 update frequency (scriptInterval = 0)',domoticz.LOG_ERROR)
		scriptInterval = 0
	end

--Check if inverter power level in relation to script interval and the fact that the minimum energy count is 1Wh, is in balance
	--(example: inverter power = 1800 @ scriptInterval of 1 second = 0,5 Wh.
	--At 20 seconds ((3600/1800) x (100/10)) = 10Wh +/-0.5Wh(minimum counter value))
	-- 10 +/-0.5 is a 10% deviation
	local maxDev = 10 --percent
	if (3600 / battery_inverter_power.value) * (100 / maxDev) > scriptInterval then
		scriptInterval = _.round ((3600 / battery_inverter_power.value) * (100 / maxDev), 3)
		domoticz.log('scriptInterval value increased to ' .. scriptInterval .. ' seconds to have a maximum deviation of ' .. maxDev .. ' percent', domoticz.LOG_DEBUG)
	end
---end of error checking functions ---

	--check if the script should continue, based on given scriptInterval timer
	--check timestamp from persistent data

	deltaTime = (domoticz.data.consumedEnergy.getLatest().time.millisecondsAgo)/1000
	if (deltaTime < scriptInterval) then
		domoticz.log("script trigger interval < than set value for scriptInterval (".. scriptInterval .. ")",domoticz.LOG_DEBUG)
		goto endScript
	end


	---calculate new energy values
	--check if device is a P1 meter
	domoticz.log('energymeter type = '.. consumedEnergyMeter.deviceType, domoticz.LOG_DEBUG)
	if consumedEnergyMeter.deviceType == 'P1 Smart Meter' then
		newConsumedEnergyMeter = consumedEnergyMeter.usage1 + consumedEnergyMeter.usage2
		newReturnedEnergyMeter = returnedEnergyMeter.return1 + returnedEnergyMeter.return2
		--batteryProdWatt = consumedEnergyMeter.usage
		--batteryUsedWatt = consumedEnergyMeter.usageDelivered
		domoticz.log('P1 meter: usage and return values will be used', domoticz.LOG_DEBUG)
	else -- other meter than P1 Smart Meter
		newConsumedEnergyMeter = consumedEnergyMeter.WhTotal
		newReturnedEnergyMeter = returnedEnergyMeter.WhTotal
		domoticz.log('General Energy meters for consumption and returned: WhTotal will be used per meter', domoticz.LOG_DEBUG)
	end

	---load previous energy values for consumption and returnedEnergy
	oldReturnedEnergyMeter = domoticz.data.returnedEnergy.getLatest().data
	oldConsumedEnergyMeter = domoticz.data.consumedEnergy.getLatest().data


	---check if the dzVents variable is new and if so, fill it with the current meter value
	if oldConsumedEnergyMeter == 0 then
		domoticz.data.consumedEnergy.add(newConsumedEnergyMeter)
	end
	if oldReturnedEnergyMeter == 0 then
		domoticz.data.returnedEnergy.add(newReturnedEnergyMeter)
		goto endScript
	end

	if (oldConsumedEnergyMeter == 0 or oldReturnedEnergyMeter == 0) then
		domoticz.log('Script is gathering the value for the consumed / produced energy meter for the 1st time. Script will end and be continued at the next interval', domoticz.LOG_DEBUG)
		goto endScript
	end
	
	---check for error when new value < old value
	if newConsumedEnergyMeter < oldConsumedEnergyMeter then
		domoticz.log('New value of consumed enery meter ('.. newConsumedEnergyMeter ..' Wh < previous value of '.. oldConsumedEnergyMeter..' Wh. Script will not continue',domoticz.LOG_ERROR)
		goto endScript
	elseif newReturnedEnergyMeter < newReturnedEnergyMeter then
		domoticz.log('New value of returned enery meter ('.. newReturnedEnergyMeter ..' Wh < previous value of '.. oldReturnedEnergyMeter..' Wh. Script will not continue',domoticz.LOG_ERROR)
		goto endScript
	end

	---calculate max. Wh that the battery inverter can handle (both directions)
	maxBbatteryInverterEnergy = battery_inverter_power.value * (domoticz.data.consumedEnergy.getLatest().time.millisecondsAgo / 3600000)
	domoticz.log('maxBbatteryInverterEnergy = '..battery_inverter_power.value .. ' x (' ..
	domoticz.data.consumedEnergy.getLatest().time.secondsAgo .. ' / 3600) = ' .. _.round (maxBbatteryInverterEnergy, 1) .. ' Wh',domoticz.LOG_DEBUG)

	---calculate the energy balance by: return - consumption
	--a negative value means consumption
	--a positive value means return
	energyBalance = (newReturnedEnergyMeter - oldReturnedEnergyMeter) - (newConsumedEnergyMeter - oldConsumedEnergyMeter)
	domoticz.log('Energy balance = '..energyBalance..' Wh (negative = consumption)',domoticz.LOG_DEBUG)

	if energyBalance > maxBbatteryInverterEnergy then
		inverterLostEnergy = energyBalance - maxBbatteryInverterEnergy
		inverterLostEnergyProd = energyBalance - maxBbatteryInverterEnergy
		inverterLostEnergyUsed = 0
		domoticz.log('Positive energybalance above max inverter capacity. inverterLostEnergy = '.. energyBalance  ..' - ' ..maxBbatteryInverterEnergy .. ' = ' .. inverterLostEnergy, domoticz.LOG_DEBUG)
		energyBalance = maxBbatteryInverterEnergy
		batteryProdWatt = battery_inverter_power.value
		batteryUsedWatt = 0
	elseif energyBalance < (-1 * maxBbatteryInverterEnergy) then -- more consumption than inverter can deliver
		inverterLostEnergy = (-1 * energyBalance ) - maxBbatteryInverterEnergy
		inverterLostEnergyUsed = (-1 * energyBalance ) - maxBbatteryInverterEnergy
		inverterLostEnergyProd = 0
		domoticz.log('Negative Energybalance below max inverter capacity. inverterLostEnergy = '.. -1 *energyBalance ..' - ' ..maxBbatteryInverterEnergy .. ' = ' .. inverterLostEnergy, domoticz.LOG_DEBUG)
		energyBalance = -1 * maxBbatteryInverterEnergy
		batteryUsedWatt = battery_inverter_power.value
		batteryProdWatt = 0
	else
		inverterLostEnergy = 0
		inverterLostEnergyProd = 0
		inverterLostEnergyUsed = 0
		inverterLostEnergyProd = 0
		domoticz.log('Energy balance within capacity of battery inverter', domoticz.LOG_DEBUG)
	end

---check the effect of the energy balance on the solar battery
	solarBatteryValue = solarBattery.sValue * 1000 -- custom sensor registers in kWh, while internal calculations are done in Wh
	newSolarBatteryValue = solarBatteryValue + energyBalance
	domoticz.log('solar battery value = '..solarBatteryValue ..' Wh, battery capacity is '..battery_capacity.value ..' Wh, new solar battery value = '..newSolarBatteryValue, domoticz.LOG_DEBUG)

--initial variable values:
	batteryProdEnergy = 0
	batteryUsedEnergy = 0
	newLostEnergyEmpty = 0
	newLostEnergyFull = 0
	inverterLostEnergyProdFull = 0
	inverterLostEnergyUsedEmpty = 0

--decide what the new state of the battery will be
	if newSolarBatteryValue > battery_capacity.value then --more energy produced than fits in battery
		--newLostEnergy = newSolarBatteryValue - battery_capacity.value --count all energy that goes above the set capacity level
		newLostEnergyFull = newSolarBatteryValue - battery_capacity.value --count all energy that goes above the set capacity level

		--update battery level with max value
		newSolarBatteryValue = battery_capacity.value
		--check if the battery is not already full
		if solarBatteryValue < battery_capacity.value then
			batteryProdEnergy = battery_capacity.value - solarBatteryValue
		end
		if emptyFullBatteryCountLostInverterEnergy == 0 then --battery is already full without lost inverter energy
			inverterLostProdWatt = 0
		else
			inverterLostEnergyProdFull = inverterLostEnergyProd
			inverterLostEnergyProd = 0  -- reset value to zero, because 'ProdFull' is used instead
		end
	elseif newSolarBatteryValue < 0 then --more energy consumed than available in battery
		--check if the battery is not already empty
		if solarBatteryValue > 0 then
			--first calculate the battery-used value (old value - 0)
			batteryUsedEnergy = solarBatteryValue
		end
		if emptyBatteryIsLostEnergy == 1 then -- also count lost energy due to empty battery
			--newLostEnergy = newSolarBatteryValue * -1 --(newSolarBatteryValue is negative, but it needs to be added UP to the counter)
			newLostEnergyEmpty = newSolarBatteryValue * -1 --(newSolarBatteryValue is negative, but it needs to be added UP to the counter)
		else
			--newLostEnergy = 0
		end
		if emptyFullBatteryCountLostInverterEnergy == 0 then --battery is already empty without lost inverter energy, don't count (1 = count)
			inverterLostUsedWatt = 0
		else
			inverterLostEnergyUsedEmpty = inverterLostEnergyUsed
			inverterLostEnergyUsed = 0 -- reset value to zero, because 'UsedEmpty' is used instead
		end
		--update battery level to zero
		newSolarBatteryValue = 0
	else --new battery within bandwith of chosen battery capacity
		--check if energy from battery is consumed
		if energyBalance > 0 then
			batteryProdEnergy = energyBalance
		elseif energyBalance < 0 then
			--negative value means consumption
			batteryUsedEnergy = energyBalance*-1 --(energyBalance is negative, but it needs to be added UP to the counter)
		else
			--either no energy used or energy is returned
		end
		--newLostEnergy = 0
	end

	domoticz.log('battery Used Energy = '..batteryUsedEnergy .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('battery Prod Energy = '..batteryProdEnergy .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('battery Lost Energy empty = '..newLostEnergyEmpty .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('battery Lost Energy full = '..newLostEnergyFull .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('inverter Lost Energy production = '..inverterLostEnergyProd .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('inverter Lost Energy production when battery is full = '..inverterLostEnergyProdFull .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('inverter Lost Energy usage = '..inverterLostEnergyUsed .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('inverter Lost Energy usage when battery is full = '..inverterLostEnergyUsedEmpty .. 'Wh',domoticz.LOG_DEBUG)
	
--calculate battery power, based on battery energy
	if batteryUsedWatt == nil then batteryUsedWatt = _.round (batteryUsedEnergy * (3600/deltaTime), 0) end
	if batteryProdWatt == nil then batteryProdWatt = _.round (batteryProdEnergy * (3600/deltaTime), 0) end

--calculate lost energy power, based on lost energy
	if lostEnergyWatt == nil then lostEnergyWatt =  _.round ((newLostEnergyFull + newLostEnergyEmpty) * (3600/deltaTime), 0) end
	
--calculate lost inverter power, based on lost inverter energy
	if inverterLostEnergyUsedEmpty == nil then inverterLostEnergyUsedEmpty = 0 end
	if inverterLostEnergyProdFull == nil then inverterLostEnergyProdFull = 0 end
	if inverterLostUsedWatt == nil then inverterLostUsedWatt = _.round ((inverterLostEnergyUsed + inverterLostEnergyUsedEmpty) * (3600/deltaTime), 0) end
	if inverterLostProdWatt == nil then inverterLostProdWatt = _.round ((inverterLostEnergyProd + inverterLostEnergyProdFull)* (3600/deltaTime), 0) end


---update devices
	--update battery level with new value
	solarBattery.updateCustomSensor(_.round(newSolarBatteryValue / 1000,3))
	--update battery usage with new value
	batteryUsage.updateP1(batteryUsage.usage1 + batteryUsedEnergy, 0, batteryUsage.return1 + batteryProdEnergy, 0, batteryUsedWatt, batteryProdWatt)
	--update lost energy with new value
	--lostEnergy.updateElectricity(_.round(newLostEnergy * (3600/deltaTime),0), _.round(lostEnergy.WhTotal + newLostEnergy + inverterLostEnergy,0))
	lostBattery.updateP1(lostBattery.usage1 + newLostEnergyEmpty, 0, lostBattery.return1 + newLostEnergyFull, 0, lostEnergyWatt, 0)
	--update lost inverter energy with new value
	lostInverter.updateP1(lostInverter.usage1 + inverterLostEnergyUsed, lostInverter.usage2 + inverterLostEnergyUsedEmpty,
		lostInverter.return1 + inverterLostEnergyProd, lostInverter.return2 + inverterLostEnergyProdFull,
		inverterLostUsedWatt, inverterLostProdWatt)

---Update dzVents variables with the new meter values
	domoticz.data.returnedEnergy.add(newReturnedEnergyMeter)
	domoticz.data.consumedEnergy.add(newConsumedEnergyMeter)
::endScript::
end
}

[jake]

My log shows an error, while the calculation seems te be done just fine. Any ideas?

The code I use:

Code: Select all

--version 0.1 02-04-2021: dzVents version of solar battery script
--version 0.1.1	03-04-2021: fix left behind variable and avoidance of power level > max inverter power level, due to rounding of calculation
--version 0.1.2 05-04-2021: changed a check for latest data storage from seconds to milliseconds to accommodate meters that update every second
--version 0.1.3 05-04-2021: Added a check to avoid big deviations in calculation when inverter power level is small while having
--	also a small script interval. Added more debug logging
--version 0.1.4b 10-04-2021: Description text fix + little preparation for future release
--version 0.1.5 11-04-2021: Lost energy due to battery and due to inverter size are now split and only combined during device update

--version 0.2a	14-04-2021: BREAKING CHANGE: 	-- 'Lost Energy' 'Electric + Instant + Counter' device need to be replaced by a 'P1-meter' device
												-- New 'P1-meter' device needs to be added to trace losses in limited battery inverter

--To be created virtual devices in the hardware section of Domoticz:
	local solarBattery_name = 'Virtual Solar Battery'		-- (1) Virtual 'Custom Sensor' device name for the 'Virtual Solar Battery'. Change axis label to kWh
	local batteryUsage_name = 'Virtual Solar Battery Usage'		-- (2) Virtual 'P1-meter' device name for monitoring storage in and consumption from the solar battery
	--local lostEnergy_name	 = 'Lost Solar Energy'	(No longer needed, will be removed in later version -- (x) Virtual 'Electric Instant + Counter' device name for the 'Lost Solar Energy'
	local lostBattery_name = 'Lost Solar Battery Energy'		-- (3) Virtual 'P1-meter' device name for the 'Lost Solar Battery Energy'
	local lostInverter_name = 'Lost Solar Battery Inverter Energy'	-- (4) Virtual 'P1-meter' device name for the 'Lost Solar Battery Inverter Energy'
	
--To be created User Variable in the Setup - More Options - User Variable section:
	local battery_capacity_name = 'SolarBatteryCapacity'		-- (5) User Variable name for the 'Solar Battery Capacity'. Type 'Integer'. Value in Wh (4kWh battery = '4000')
	local battery_inverter_power_name = 'SolarBatteryInverterCap'	-- (6) User variable name for the 'Solar Battery Inverter Power'. Type 'Integer'. Value in W

--Energy meter(s) management
	--name the device(s) used for counting energy from/to the grid
	--when a P1 meter is used for both 'from' and 'to' the grid, fill in this name for both lines! Else, fill in the name for both requested devices
	--Device name for consumed energy FROM the grid:
	local consumedEnergyMeter_name = 'Energie kWh'			--(7)
	--Device name for delivered energy TO the grid:
	local returnedEnergyMeter_name = 'Energie kWh'			--(8)
	--decide if energy consumption with an empty battery counts as 'lost energy'
	local emptyBatteryIsLostEnergy = 1 --(1 =  yes, 0 = no)		--(9)
	--decide if energy losses due to limited inverter power count with a full/empty battery
	local emptyFullBatteryCountLostInverterEnergy = 1 --(1 = yes, 0 = no) --(10)
	--Interval of running the Script
	local scriptInterval = 60 --(seconds. Minimum interval depends on update frequency of P1-meter. 0 = P1-meter update frequency) --(11)


-- 1 trigger for P1 meter with both consumption and production meter integrated. Otherwise 2 meters
	if (consumedEnergyMeter_name == returnedEnergyMeter_name) then
	 	meterName = consumedEnergyMeter_name
	else
		meterName = consumedEnergyMeter_name ..', '.. returnedEnergyMeter_name
	end


return {
	active = true,
	on = {
		devices = {
	--timer based devices
	--sensor based devices
		meterName,
	--setting devices
	--actuator devices
		}
--	timer = {'every minute'}},
	},
	data = {
		returnedEnergy = {initial=nil, history = true, maxItems = 1},
		consumedEnergy = {initial= nil, history = true, maxItems = 1}
	},
	logging = {
	level = domoticz.LOG_DEBUG, --domoticz.LOG_INFO, domoticz.LOG_MODULE_EXEC_INFO, domoticz.LOG_DEBUG or domoticz.LOG_ERROR
	marker = "Hey solar battery"
	},

	execute = function(domoticz, device)

---error checking functions ---

--check whether devices exist by veryfing their name
	if domoticz.utils.deviceExists(solarBattery_name) == false then
		domoticz.log('necessary device '.. solarBattery_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif domoticz.utils.deviceExists(batteryUsage_name) == false then
		domoticz.log('necessary device '.. batteryUsage_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	--elseif domoticz.utils.deviceExists(lostEnergy_name) == false then
	--	domoticz.log('necessary device '.. lostEnergy_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
	--	goto endScript
	elseif domoticz.utils.deviceExists(lostBattery_name) == false then
		domoticz.log('necessary device '.. lostBattery_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif domoticz.utils.deviceExists(lostInverter_name) == false then
		domoticz.log('necessary device '.. lostInverter_name ..'	doesnt exist. Script will end. Please add the device to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif domoticz.utils.variableExists(battery_capacity_name) == false then
		domoticz.log('User variable '.. battery_capacity_name ..' doesnt exist. Script will end. Please add the user variable to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif domoticz.utils.variableExists(battery_inverter_power_name) == false then
		domoticz.log('User variable '.. battery_inverter_power_name ..' doesnt exist. Script will end. Please add the user variable to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	end

--Devices exists, now define devices/variable within Domoticz:
	local solarBattery = domoticz.devices(solarBattery_name)
	local batteryUsage = domoticz.devices(batteryUsage_name)
	--local lostEnergy = domoticz.devices(lostEnergy_name)
	local lostBattery = domoticz.devices(lostBattery_name)
	local lostInverter = domoticz.devices(lostInverter_name)
	local consumedEnergyMeter = domoticz.devices(consumedEnergyMeter_name)
	local returnedEnergyMeter = domoticz.devices(returnedEnergyMeter_name)
	local battery_capacity = domoticz.variables(battery_capacity_name)
	local battery_inverter_power = domoticz.variables(battery_inverter_power_name)

--Define script variables
	local oldConsumedEnergyMeter
	local oldReturnedEnergyMeter
	local newConsumedEnergyMeter
	local newReturnedEnergyMeter
	local energyBalance
	local solarBatteryValue
	local newSolarBatteryValue
	--local newLostEnergy
	local newLostEnergyFull
	local newLostEnergyEmpty
	local batteryUsedEnergy
	local batteryProdEnergy
	local batteryUsedWatt
	local batteryProdWatt
	local batter
	local deltaTime
	local maxBbatteryInverterEnergy -- battery inverter power x (time since last time the script was ran / 3600) in Wh
	local inverterLostEnergy -- lost energy to or from the grid due to limitation in battery capacity and/or battery inverter power
	local inverterLostEnergyProd
	local inverterLostEnergyUsed
	local inverterLostEnergyProdFull
	local inverterLostEnergyUsedEmpty
	local inverterLostProdWatt
	local inverterLostUsedWatt
	local _ = domoticz.utils._

--check if new created virtual devices are the right type
	if (solarBattery.deviceType ~= 'General' and solarBattery.deviceSubType ~= "Custom Sensor") then
		domoticz.log('created device '.. solarBattery_name ..'	is not of the type Custom Sensor. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	elseif (batteryUsage.deviceType ~= 'P1 Smart Meter' and batteryUsage.deviceSubType ~= "Energy") then
		domoticz.log('created device '.. batteryUsage_name ..'	is not of the type P1-meter. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
		goto endScript
	--elseif (lostEnergy.deviceType ~= 'General' and lostEnergy.deviceSubType ~= "kWh") then
	--	domoticz.log('created device '.. lostEnergy_name ..'	is not of the type RFXMeter. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
	--	goto endScript
	elseif (lostBattery_name.deviceType ~= 'P1 Smart Meter' and lostBattery.deviceSubType ~= "Energy") then
		domoticz.log('created device '.. lostBattery_name ..'	is not of the type P1-meter. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
	elseif (lostInverter.deviceType ~= 'P1 Smart Meter' and lostInverter.deviceSubType ~= "Energy") then
		domoticz.log('created device '.. lostEnergy_name ..'	is not of the type P1-meter. Script will end. Please add the correct device(type) to Domoticz', domoticz.LOG_ERROR)
	end

--check if variables are the right type and contain a good value
	if battery_capacity.type ~= domoticz.INTEGER then
		domoticz.log('User variable '.. battery_capacity_name ..' is not of the type INTEGER. Script will end. Please change the user variable to the type INTEGER and put a positive number in there', domoticz.LOG_ERROR)
	goto endScript
	elseif (battery_capacity.value == nil or battery_capacity.value < 0) then
		domoticz.log('Solar battery capacity wrong or <0. Now set at 2000(Wh)', domoticz.LOG_ERROR)
		battery_capacity.set(2000)
	end

	if battery_inverter_power.type ~= domoticz.INTEGER then
		domoticz.log('User variable '.. battery_inverter_power_name ..' is not of the type INTEGER. Script will end. Please change the user variable to the type INTEGER and put a positive number in there', domoticz.LOG_ERROR)
		goto endScript
	elseif (battery_inverter_power.value == nil or battery_capacity.value < 0) then
		domoticz.log('Solar battery inverter capacity wrong or <0. Now set at 4000(W)', domoticz.LOG_ERROR)
		battery_inverter_power.set(4000)
	end
	
	if (emptyBatteryIsLostEnergy == nil or (emptyBatteryIsLostEnergy ~= 0 and emptyBatteryIsLostEnergy ~= 1 )) then
		emptyBatteryIsLostEnergy = 1
		domoticz.log('internal variable emptyBatteryIsLostEnergy does not contain a value of 0 or 1. Script will use value 1 and count lost energy at an empty battery')
	end
	
	if (emptyFullBatteryCountLostInverterEnergy == nil or (emptyFullBatteryCountLostInverterEnergy ~= 0 and emptyFullBatteryCountLostInverterEnergy ~= 1)) then
		emptyFullBatteryCountLostInverterEnergy = 1
		domoticz.log('internal variable emptyFullBatteryCountLostInverterEnergy does not contain a value of 0 or 1. Script will use a value of 1 and count lost inverter energy at empty or full battery')
	end

--check if persistent data exist and is a number. The new 'zero' value will be updated further down the script
	if (domoticz.data.consumedEnergy.size == 0 or
		_.isNumber(domoticz.data.consumedEnergy.getLatest().data)==false or
		domoticz.data.consumedEnergy.getLatest().data < 0) then
		domoticz.data.consumedEnergy.add(0)
		domoticz.log('dzVents variable consumedEnergy was empty or did not contain a number. Now set as 0',domoticz.LOG_DEBUG)
	end
	if (domoticz.data.returnedEnergy.size == 0 or
		_.isNumber(domoticz.data.returnedEnergy.getLatest().data)==false or
		domoticz.data.returnedEnergy.getLatest().data < 0) then
		domoticz.data.returnedEnergy.add(0)
		domoticz.log('dzVents variable returnedEnergy was empty or did not contain a number. Now set as 0',domoticz.LOG_DEBUG)
	end

--give a new virtual devices a start load of 0 kWh and 0 W
	if solarBattery.sValue == nil then
		solarBattery.updateCustomSensor(0)
		domoticz.log('solar battery value is nil en will be updated to 0',domoticz.LOG_DEBUG)
	end
	if (batteryUsage.usage1 == nil or batteryUsage.return1 == nil) then batteryUsage.updateP1(0,0,0,0,0,0) end
	--if lostEnergy.WhTotal == nil then lostEnergy.updateElectricity(0,0) end
	if (lostBattery.usage1 == nil or lostBattery.return1 == nil) then lostBattery.updateP1(0,0,0,0,0,0) end
	if (lostInverter.usage1 == nil or lostInverter.return1 == nil) then lostInverter.updateP1(0,0,0,0,0,0) end
	
--Check if scriptInterval value is valid
	if (_.isNumber(scriptInterval) == false or scriptInterval < 0) then
		domoticz.log('value for scriptInterval is invalid (not a number, or < 0). Script will use P1 update frequency (scriptInterval = 0)',domoticz.LOG_ERROR)
		scriptInterval = 0
	end

--Check if inverter power level in relation to script interval and the fact that the minimum energy count is 1Wh, is in balance
	--(example: inverter power = 1800 @ scriptInterval of 1 second = 0,5 Wh.
	--At 20 seconds ((3600/1800) x (100/10)) = 10Wh +/-0.5Wh(minimum counter value))
	-- 10 +/-0.5 is a 10% deviation
	local maxDev = 10 --percent
	if (3600 / battery_inverter_power.value) * (100 / maxDev) > scriptInterval then
		scriptInterval = _.round ((3600 / battery_inverter_power.value) * (100 / maxDev), 3)
		domoticz.log('scriptInterval value increased to ' .. scriptInterval .. ' seconds to have a maximum deviation of ' .. maxDev .. ' percent', domoticz.LOG_DEBUG)
	end
---end of error checking functions ---

	--check if the script should continue, based on given scriptInterval timer
	--check timestamp from persistent data

	deltaTime = (domoticz.data.consumedEnergy.getLatest().time.millisecondsAgo)/1000
	if (deltaTime < scriptInterval) then
		domoticz.log("script trigger interval < than set value for scriptInterval (".. scriptInterval .. ")",domoticz.LOG_DEBUG)
		goto endScript
	end


	---calculate new energy values
	--check if device is a P1 meter
	domoticz.log('energymeter type = '.. consumedEnergyMeter.deviceType, domoticz.LOG_DEBUG)
	if consumedEnergyMeter.deviceType == 'P1 Smart Meter' then
		newConsumedEnergyMeter = consumedEnergyMeter.usage1 + consumedEnergyMeter.usage2
		newReturnedEnergyMeter = returnedEnergyMeter.return1 + returnedEnergyMeter.return2
		--batteryProdWatt = consumedEnergyMeter.usage
		--batteryUsedWatt = consumedEnergyMeter.usageDelivered
		domoticz.log('P1 meter: usage and return values will be used', domoticz.LOG_DEBUG)
	else -- other meter than P1 Smart Meter
		newConsumedEnergyMeter = consumedEnergyMeter.WhTotal
		newReturnedEnergyMeter = returnedEnergyMeter.WhTotal
		domoticz.log('General Energy meters for consumption and returned: WhTotal will be used per meter', domoticz.LOG_DEBUG)
	end

	---load previous energy values for consumption and returnedEnergy
	oldReturnedEnergyMeter = domoticz.data.returnedEnergy.getLatest().data
	oldConsumedEnergyMeter = domoticz.data.consumedEnergy.getLatest().data


	---check if the dzVents variable is new and if so, fill it with the current meter value
	if oldConsumedEnergyMeter == 0 then
		domoticz.data.consumedEnergy.add(newConsumedEnergyMeter)
	end
	if oldReturnedEnergyMeter == 0 then
		domoticz.data.returnedEnergy.add(newReturnedEnergyMeter)
		goto endScript
	end

	if (oldConsumedEnergyMeter == 0 or oldReturnedEnergyMeter == 0) then
		domoticz.log('Script is gathering the value for the consumed / produced energy meter for the 1st time. Script will end and be continued at the next interval', domoticz.LOG_DEBUG)
		goto endScript
	end
	
	---check for error when new value < old value
	if newConsumedEnergyMeter < oldConsumedEnergyMeter then
		domoticz.log('New value of consumed enery meter ('.. newConsumedEnergyMeter ..' Wh < previous value of '.. oldConsumedEnergyMeter..' Wh. Script will not continue',domoticz.LOG_ERROR)
		goto endScript
	elseif newReturnedEnergyMeter < newReturnedEnergyMeter then
		domoticz.log('New value of returned enery meter ('.. newReturnedEnergyMeter ..' Wh < previous value of '.. oldReturnedEnergyMeter..' Wh. Script will not continue',domoticz.LOG_ERROR)
		goto endScript
	end

	---calculate max. Wh that the battery inverter can handle (both directions)
	maxBbatteryInverterEnergy = battery_inverter_power.value * (domoticz.data.consumedEnergy.getLatest().time.millisecondsAgo / 3600000)
	domoticz.log('maxBbatteryInverterEnergy = '..battery_inverter_power.value .. ' x (' ..
	domoticz.data.consumedEnergy.getLatest().time.secondsAgo .. ' / 3600) = ' .. _.round (maxBbatteryInverterEnergy, 1) .. ' Wh',domoticz.LOG_DEBUG)

	---calculate the energy balance by: return - consumption
	--a negative value means consumption
	--a positive value means return
	energyBalance = (newReturnedEnergyMeter - oldReturnedEnergyMeter) - (newConsumedEnergyMeter - oldConsumedEnergyMeter)
	domoticz.log('Energy balance = '..energyBalance..' Wh (negative = consumption)',domoticz.LOG_DEBUG)

	if energyBalance > maxBbatteryInverterEnergy then
		inverterLostEnergy = energyBalance - maxBbatteryInverterEnergy
		inverterLostEnergyProd = energyBalance - maxBbatteryInverterEnergy
		inverterLostEnergyUsed = 0
		domoticz.log('Positive energybalance above max inverter capacity. inverterLostEnergy = '.. energyBalance  ..' - ' ..maxBbatteryInverterEnergy .. ' = ' .. inverterLostEnergy, domoticz.LOG_DEBUG)
		energyBalance = maxBbatteryInverterEnergy
		batteryProdWatt = battery_inverter_power.value
		batteryUsedWatt = 0
	elseif energyBalance < (-1 * maxBbatteryInverterEnergy) then -- more consumption than inverter can deliver
		inverterLostEnergy = (-1 * energyBalance ) - maxBbatteryInverterEnergy
		inverterLostEnergyUsed = (-1 * energyBalance ) - maxBbatteryInverterEnergy
		inverterLostEnergyProd = 0
		domoticz.log('Negative Energybalance below max inverter capacity. inverterLostEnergy = '.. -1 *energyBalance ..' - ' ..maxBbatteryInverterEnergy .. ' = ' .. inverterLostEnergy, domoticz.LOG_DEBUG)
		energyBalance = -1 * maxBbatteryInverterEnergy
		batteryUsedWatt = battery_inverter_power.value
		batteryProdWatt = 0
	else
		inverterLostEnergy = 0
		inverterLostEnergyProd = 0
		inverterLostEnergyUsed = 0
		inverterLostEnergyProd = 0
		domoticz.log('Energy balance within capacity of battery inverter', domoticz.LOG_DEBUG)
	end

---check the effect of the energy balance on the solar battery
	solarBatteryValue = solarBattery.sValue * 1000 -- custom sensor registers in kWh, while internal calculations are done in Wh
	newSolarBatteryValue = solarBatteryValue + energyBalance
	domoticz.log('solar battery value = '..solarBatteryValue ..' Wh, battery capacity is '..battery_capacity.value ..' Wh, new solar battery value = '..newSolarBatteryValue, domoticz.LOG_DEBUG)

--initial variable values:
	batteryProdEnergy = 0
	batteryUsedEnergy = 0
	newLostEnergyEmpty = 0
	newLostEnergyFull = 0
	inverterLostEnergyProdFull = 0
	inverterLostEnergyUsedEmpty = 0

--decide what the new state of the battery will be
	if newSolarBatteryValue > battery_capacity.value then --more energy produced than fits in battery
		--newLostEnergy = newSolarBatteryValue - battery_capacity.value --count all energy that goes above the set capacity level
		newLostEnergyFull = newSolarBatteryValue - battery_capacity.value --count all energy that goes above the set capacity level

		--update battery level with max value
		newSolarBatteryValue = battery_capacity.value
		--check if the battery is not already full
		if solarBatteryValue < battery_capacity.value then
			batteryProdEnergy = battery_capacity.value - solarBatteryValue
		end
		if emptyFullBatteryCountLostInverterEnergy == 0 then --battery is already full without lost inverter energy
			inverterLostProdWatt = 0
		else
			inverterLostEnergyProdFull = inverterLostEnergyProd
			inverterLostEnergyProd = 0  -- reset value to zero, because 'ProdFull' is used instead
		end
	elseif newSolarBatteryValue < 0 then --more energy consumed than available in battery
		--check if the battery is not already empty
		if solarBatteryValue > 0 then
			--first calculate the battery-used value (old value - 0)
			batteryUsedEnergy = solarBatteryValue
		end
		if emptyBatteryIsLostEnergy == 1 then -- also count lost energy due to empty battery
			--newLostEnergy = newSolarBatteryValue * -1 --(newSolarBatteryValue is negative, but it needs to be added UP to the counter)
			newLostEnergyEmpty = newSolarBatteryValue * -1 --(newSolarBatteryValue is negative, but it needs to be added UP to the counter)
		else
			--newLostEnergy = 0
		end
		if emptyFullBatteryCountLostInverterEnergy == 0 then --battery is already empty without lost inverter energy, don't count (1 = count)
			inverterLostUsedWatt = 0
		else
			inverterLostEnergyUsedEmpty = inverterLostEnergyUsed
			inverterLostEnergyUsed = 0 -- reset value to zero, because 'UsedEmpty' is used instead
		end
		--update battery level to zero
		newSolarBatteryValue = 0
	else --new battery within bandwith of chosen battery capacity
		--check if energy from battery is consumed
		if energyBalance > 0 then
			batteryProdEnergy = energyBalance
		elseif energyBalance < 0 then
			--negative value means consumption
			batteryUsedEnergy = energyBalance*-1 --(energyBalance is negative, but it needs to be added UP to the counter)
		else
			--either no energy used or energy is returned
		end
		--newLostEnergy = 0
	end

	domoticz.log('battery Used Energy = '..batteryUsedEnergy .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('battery Prod Energy = '..batteryProdEnergy .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('battery Lost Energy empty = '..newLostEnergyEmpty .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('battery Lost Energy full = '..newLostEnergyFull .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('inverter Lost Energy production = '..inverterLostEnergyProd .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('inverter Lost Energy production when battery is full = '..inverterLostEnergyProdFull .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('inverter Lost Energy usage = '..inverterLostEnergyUsed .. 'Wh',domoticz.LOG_DEBUG)
	domoticz.log('inverter Lost Energy usage when battery is full = '..inverterLostEnergyUsedEmpty .. 'Wh',domoticz.LOG_DEBUG)
	
--calculate battery power, based on battery energy
	if batteryUsedWatt == nil then batteryUsedWatt = _.round (batteryUsedEnergy * (3600/deltaTime), 0) end
	if batteryProdWatt == nil then batteryProdWatt = _.round (batteryProdEnergy * (3600/deltaTime), 0) end

--calculate lost energy power, based on lost energy
	if lostEnergyWatt == nil then lostEnergyWatt =  _.round ((newLostEnergyFull + newLostEnergyEmpty) * (3600/deltaTime), 0) end
	
--calculate lost inverter power, based on lost inverter energy
	if inverterLostEnergyUsedEmpty == nil then inverterLostEnergyUsedEmpty = 0 end
	if inverterLostEnergyProdFull == nil then inverterLostEnergyProdFull = 0 end
	if inverterLostUsedWatt == nil then inverterLostUsedWatt = _.round ((inverterLostEnergyUsed + inverterLostEnergyUsedEmpty) * (3600/deltaTime), 0) end
	if inverterLostProdWatt == nil then inverterLostProdWatt = _.round ((inverterLostEnergyProd + inverterLostEnergyProdFull)* (3600/deltaTime), 0) end


---update devices
	--update battery level with new value
	solarBattery.updateCustomSensor(_.round(newSolarBatteryValue / 1000,3))
	--update battery usage with new value
	batteryUsage.updateP1(batteryUsage.usage1 + batteryUsedEnergy, 0, batteryUsage.return1 + batteryProdEnergy, 0, batteryUsedWatt, batteryProdWatt)
	--update lost energy with new value
	--lostEnergy.updateElectricity(_.round(newLostEnergy * (3600/deltaTime),0), _.round(lostEnergy.WhTotal + newLostEnergy + inverterLostEnergy,0))
	lostBattery.updateP1(lostBattery.usage1 + newLostEnergyEmpty, 0, lostBattery.return1 + newLostEnergyFull, 0, lostEnergyWatt, 0)
	--update lost inverter energy with new value
	lostInverter.updateP1(lostInverter.usage1 + inverterLostEnergyUsed, lostInverter.usage2 + inverterLostEnergyUsedEmpty,
		lostInverter.return1 + inverterLostEnergyProd, lostInverter.return2 + inverterLostEnergyProdFull,
		inverterLostUsedWatt, inverterLostProdWatt)

---Update dzVents variables with the new meter values
	domoticz.data.returnedEnergy.add(newReturnedEnergyMeter)
	domoticz.data.consumedEnergy.add(newConsumedEnergyMeter)
::endScript::
end
}

On my phone I can't see what line 306 is. There is your answer hidden