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Power factor is simply the ratio of W (real power) to VA (apparent power). Positive is leading, negative is lagging, and the middle point is "unity" power factor. Usually you see power factor represented as 1-0 and with 0.80 as a nominal value for rating things like VA to W on a UPS. The inverters return +- 100-0% so you can just divide it by 100 to see the "traditional" number (i.e. 80% is 0.80, 100% is unity). Power factor doesn't have units since it's a ratio. The graph unfortunately looks weird because in this application it PF should be centered around 100 (100/100 = 1 unity) in the middle and not 0. At very large industrial scale utilities often require the consumer to install power factor correction. At residential levels it's irrelevant other than a fun statistic. Poor power factors are energy wasted (var). Active power (W, watts) is the "good" part that's doing useful work. Reactive power (var, volt-amps reactive) is lost power. Apparent power (VA, volt-amps) is the total demand power. Since power factor is your ratio of working to lost power, a PF of 0.5 (or 50%) means it's doing something very inefficient during that time. If you were to turn on the VA and var sensors you would probably see that VA is double the W. |
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Hi @WillCodeForCats, Thanks for the quick reply and the explanation
I'm asking because the "House Consumtion" is shown as the B1_DC_Power in the energy flow - but that is not the correct "House Consumption power (this might be also a good hint for your config template example. The data are not the same base. For the powerflow it has to be adapted) Thanks |
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Hi @ALL,
Does anyone knows how to interprete the power factor data?
![image](https://private-user-images.githubusercontent.com/97809992/279747090-43bcfd29-2145-4dbe-8083-8e5e839c3a76.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.iRUjT5lN4-YvFsJ3r3xQ1Omcy2fwL-KjfRzZ1H7n5BE)
I have had a look at it since yesterday and saw this:
I'm not really sure what that means to me?
Normally I would assume that the power factor is a number between 0...1 or 0...100% but why it is possible to have it in both directions?
And also in the period of receiving energy from grid (1:30 to 7:30 am), why it's having round about 50%?
My originally question for thinking about the power factor was: why the battery power (DC) is higher than the inverter power (house consumtion in AC). At best looking to the period from e.g. from 0:00 to 1:30 am (distance to 0 is not equidistant)
![image](https://private-user-images.githubusercontent.com/97809992/279751303-62cf2e28-25c9-4f72-aeb2-fcdeb4126384.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.L8dsObwIRJeCLnZ9ES-FUscL7zGAGzqd78OxID5qXjM)
--> maybe there is a context with power factor and have I got to multiply the power factor to the battery's DC power so that it matches? but actually I don't see the context if there is one...
If anyone has some answers, I would appreciate to know.
Thanks
Chris
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