Counter Log - Help with kWh calculation

Ricardo Pinto

6 years ago
updated 6 years ago

Hi people,

May I ask a little help about counter log?

I have a power sensor on an electric board. On ETS, I get an Instantaneous Power object (2 bytes), which comes in kW format. Like, if the house is consuming 1200W, I get 1,2 value on ETS, if it's consuming 250W, I get 0,25 value, and so on. I have the correct instant values showing on visualization.

I've tried to create counter logs, to get an approximate daily consumption, etc. The problem is that the values on the counter log don't make any sense.

For example, if the house is consuming constant 250W during 24hour, I should get 6 kWh by the end of the day, but the values don't make sense. On one day, it showed something like 138kWh on one day, which is impossible. I deleted all data now.

Either I'm configuring all wrong the counter log, or there's something I'm missing.

Thanks for any help

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Andy Gill

6 years ago

Hi Ricardo,

I may be wrong but I think the input only takes a KWH reading, an accumulative value not instantaneous.

Assume your meter has that?

Andy

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Hi Fabien,

Thanks for the feedback.

Well, in my case I get the data from a ZENNIO KES energy saver meter, which returns the instantaneous power consumption in kW.

If I create a Counter log with the instantaneous power consumption as the input, wasn't it supposed to calculate the daily values, etc? The values don't make any sense, I already quit using the counter log until I find the correct configuration.

I get the instant power consumption in kW and it's correct. I suppose that using that value as an input of the counter log, should calculate how much power I consumed for how long, and present the correct values.

Any extra advise would be great.

Thanks

Fabien Fuster

On my installation I have set it a such, but cannot figure out anymore from where I found the formula :

Intensité is in Amp and the Log Energie is in kWh after applying the formula.

I've looked again on the web to retrieve the source of the formula (and see if the result is correct), but as mentioned above, not successful so far. I look further, and should I find it, I'll post the link here. In the meantime, I hope it can help you to go in the right direction

Regards,

Fabien

Anybody?