from database
dateTime usUnits interval consumption ampere
linevoltage pf
1697583060 1 1 90.84233333 141
0.9
1697583120 1 1 110.3686667 141
0.9
1697583180 1 1 77.51766667 140.5
0.9
1697583240 1 1 101.4843333 141
0.9
1697583300 1 1 100.0026667 141
0.9
1697583360 1 1 4.977666667 141
0.9
1697583420 1 1 4.907666667 142
0.9
1697583480 1 1 4.927666667 141.5
0.9
1697583540 1 1 4.886 141.3333333
0.9
1697583600 1 1 4.867666667 141
0.9
1697583660 1 1 4.877666667 141
0.9
1697583720 1 1 78.94533333 141
0.9
1697583780 1 1 90.26166667
140.6666667 0.9
On Wednesday, October 18, 2023 at 3:35:05 AM UTC+3 Mks Mk wrote:
> Hi Gary
>
> it all started here
> https://groups.google.com/g/weewx-user/c/ltOVkcY1fKc/m/7sQSVGN_AQAJ
>
> we were using fixed value for the incoming grid line to calculate the
> consumption but it was not accurate enough so we added new sensor to read
> the grid incoming line voltage.
> earlier this formula worked consumption = ampere * 117 / 1000 * 0.88
> but consumption = ampere * linevoltage / 1000 * 0.88 did not work
> the linevoltage input comes from different sensor than ampere, these two
> reading are generated in different loops, so based on Tom advice the weewx
> correction will not work
> thank you
>
> On Wednesday, October 18, 2023 at 1:28:55 AM UTC+3 gjr80 wrote:
>
>> So what does
>>
>> consumption = ((ampere * linevoltage) /1000) * 0.88
>>
>> do?
>>
>> Gary
>> On Wednesday, 18 October 2023 at 08:26:25 UTC+10 [email protected] wrote:
>>
>>> Hi Tom
>>>
>>> we run weewx directly and found that 'ampere' & 'linevoltage' are in
>>> different loop because the data are coming from two different sensors by
>>> sdr.py driver.
>>> how we can combine these loops into one so weewx can process this
>>> formula, or what can we do to get this calculation done.?
>>>
>>> Thank you for your support
>>>
>>> On Tuesday, October 17, 2023 at 9:26:38 PM UTC+3 Tom Keffer wrote:
>>>
>>>> The only symbols that can be used in the [[Corrections]] formula are
>>>> other types in the archive record. So unless 'ampere', 'linevoltage', and
>>>> 'pf' all appear in the record, the correction will not work.
>>>>
>>>> On Tue, Oct 17, 2023 at 9:48 AM Mks Mk <[email protected]> wrote:
>>>>
>>>>> we want to improve the accuracy of our home energy monitor and we
>>>>> added new sensor to read the main line voltage so we got two sensors and
>>>>> the data is logged in weewx database.
>>>>>
>>>>> [[sensor_map]]
>>>>>
>>>>> ampere = current.***.EfPacket
>>>>> linevoltage = payload5.*****.RadioHeadASKPacket
>>>>>
>>>>> the database have these columns which we created
>>>>>
>>>>> consumption
>>>>> ampere
>>>>> linevoltage
>>>>> pf
>>>>>
>>>>> we want to calculate the energy consumption so we added this
>>>>> correction
>>>>>
>>>>> [StdCalibrate]
>>>>>
>>>>> [[Corrections]]
>>>>> # For each type, an arbitrary calibration expression can be
>>>>> given.
>>>>> # It should be in the units defined in the StdConvert section.
>>>>> # Example:
>>>>> foo = foo + 0.2
>>>>> pf = 0.88
>>>>> consumption = ((ampere * linevoltage) /1000) * pf
>>>>>
>>>>> unfortunately weewx did nothing nor it complained about it. can weewx
>>>>> process such formula?
>>>>>
>>>>> thanks
>>>>>
>>>>> --
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>>>>> https://groups.google.com/d/msgid/weewx-user/26effb7c-ad33-4de8-a9a0-f1390012ec5an%40googlegroups.com
>>>>>
>>>>> <https://groups.google.com/d/msgid/weewx-user/26effb7c-ad33-4de8-a9a0-f1390012ec5an%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>>> .
>>>>>
>>>>
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