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dummy device type "electricity usage" does not seem to calculate costs
Posted: Wednesday 08 January 2025 20:35
by renerene
dummy device type "electricity usage" does not seem to calculate costs, see legenda in screenhot below of fresh made device
Re: dummy device type "electricity usage" does not seem to calculate costs
Posted: Wednesday 08 January 2025 20:41
by waltervl
That is correct as it does not measure kWh but only Watt.
It is by the way not advised to use this type of device as it also has no history. Better use the Electricity (instant and counter) sensor as indicated in the wiki
https://wiki.domoticz.com/Dummy_for_vir ... lectricity
Re: dummy device type "electricity usage" does not seem to calculate costs
Posted: Wednesday 08 January 2025 21:10
by renerene
thanks for the explanation Walter.
(my excuse: the advice to not use this device was not on on the dzVents wiki)
For this incidently user it is a bit overwelming and confusing.I was using you "Electricity (instant and counter) sensor" before, to monitor my airco that only reports current [amps]
A bit of topic is here my script to fill the "Electricity (instant and counter) sensor" Maybe you could be so kind to have a look?
the problem: it resulted in some negative values in the log for energy bars
Code: Select all
return {
active = true,
logging = {
--level = domoticz.LOG_DEBUG, -- comment to use the dzVents global logging setting
marker = 'dzOpenEvseKwh'
},
on = {
devices = {
'OpenEVSE - Amps'
--,'triggerhulp'
}
},
data = {
vorigSec = { initial = 0 },
},
execute = function(dz, item, timer)
if dz.data.vorigSec > 0 then -- niet de eerste keer / data leeg?
secNu = os.time()
secVerstreken = secNu - dz.data.vorigSec
stroom= dz.devices('OpenEVSE - Amps').current
voltage = dz.devices('tuyaPlug2AircoOverloopVolt').voltage
vermogen= stroom * voltage --power [Watt]
energie=vermogen * secVerstreken/3600 -- energy [Wh]
dz.devices ('openEvseKwh').updateElectricity (vermogen, energie) --updateElectricity(power, energy): Function. Supports command options.
dz.log ('sec: '..secVerstreken, dz.LOG_INFO)
dz.log ('stroom: '..stroom, dz.LOG_INFO)
dz.log ('voltage: '..voltage, dz.LOG_INFO)
dz.log ('vermogen [Watt]: '..vermogen, dz.LOG_INFO)
dz.log ('energie [kWh]: '..energie, dz.LOG_INFO)
else
dz.log ('geen realistische tijdwaarde / eerste keer? ', dz.LOG_INFO)
end
dz.data.vorigSec = secNu
end
}
Re: dummy device type "electricity usage" does not seem to calculate costs
Posted: Wednesday 08 January 2025 21:50
by renerene
to answer my own post: problem solved, you need to pass TOTAL Wh, not delta Wh
correct script to convert Amps to power:
Code: Select all
return {
active = true,
logging = {
level = domoticz.LOG_DEBUG, -- comment to use the dzVents global logging setting
marker = 'dzMitsubishiAircoKwh'
},
on = {
devices = {
'MitsubishiAircoControl current power'
--,'triggerhulp'
}
},
data = {
vorigSec = { initial = 0 },
},
execute = function(dz, item, timer)
if dz.data.vorigSec > 0 then -- niet de eerste keer / data leeg?
secNu = os.time()
secVerstreken = secNu - dz.data.vorigSec
stroom= dz.devices('MitsubishiAircoControl current power').current
voltage = dz.devices('tuyaPlug2AircoOverloopVolt').voltage --better than 230 solid value
vermogen= stroom * voltage --power [W]
oudeEnergie = dz.devices('mitsubishiAircoKwh').WhTotal
energie=vermogen * secVerstreken/3600 --[Wh]
dz.devices ('mitsubishiAircoKwh').updateElectricity (vermogen, energie + oudeEnergie) --updateElectricity(power, energy): Function. Supports command options.
--dz.devices ('mitsubishiAircoKwh').updateEnergy(vermogen) --updateEnergy(energy): Function. In Watt.
dz.log ('sec: '..secVerstreken, dz.LOG_INFO)
dz.log ('stroom: '..stroom, dz.LOG_INFO)
dz.log ('voltage: '..voltage, dz.LOG_INFO)
dz.log ('vermogen [Watt]: '..vermogen, dz.LOG_INFO)
dz.log ('oudeEnergie [Wh]: '..oudeEnergie, dz.LOG_INFO)
dz.log ('energie [Wh]: '..energie, dz.LOG_INFO)
else
dz.log ('geen realistische tijdwaarde / eerste keer? ', dz.LOG_INFO)
end
dz.data.vorigSec = secNu
end
}