Is it possible to take an existing feed and process its historical data into kWh / day?
im trying to work out how each of my 4 solar arrays perform at different times of the year, so I can work out whether to add tilt brackets to any of them
Is it possible to process a historical power feed into a kWh / day feed
Submitted by sheppy on Fri, 19/02/2016 - 06:46»
Re: Is it possible to process a historical power feed into a kWh / day feed
It is possible to use an existing power feed and process into accumulating kWh. Theres a script for this here: https://github.com/emoncms/usefulscripts
If you install this on the same machine as your emoncms installation, then navigate to the process folder and run power_to_kwh.php
$ sudo php power_to_kwh.php
It then provides on screen options for selecting the power feed, emoncms location (local) etc.
Re: Is it possible to process a historical power feed into a kWh / day feed
I think Kevin was looking for kWh/d feed convertion whereas the 'power to kwh' script I believe just provides accumulating kWh?
Paul
Re: Is it possible to process a historical power feed into a kWh / day feed
Paul,
you are correct, I want to create a feed that has Kwh per Day.
I want to be able to plot daily power so I can see what effect the seasons have on power production for each of my solar arrays. The sun moves around a bit down here between the seasons, and on a Summer cloudless day I generate around 21Kwh whereas in Winter I generate around 7Kwh. I want to see what I can do to increase Winter production without compromising Summer too much. I suspect 2/3 of my capacity would benefit greatly from adding tilt mounts, but as the rest is already on tilts albeit in slightly different directions I want to compare them before I go and do the work.
If Kwh per Day isn't available I could try exporting Kwh to excel and chop it up into days there?
Cheers
Kevin