Earth.Org.UK
. As before, I have taken (PV generation) logs and turned them into a WAV. Some at 15 minute intervals, and some at 5 and 1. All compress a year of data into a second of audio. The last one is 5-years' worth.
From last time, PV generation as recorded by the Enphase with 15-minute sampling, then N/R (.wav
):
Playback requires an Internet connection.
Then PV generation as recorded by the Enphase with 15-minute sampling, then: Normalize, Low-Pass Filter at 500Hz with 24dB/octave roll-off (to suppress anything above 'daily' and make seasonal stand out), Normalize, Resample:
Playback requires an Internet connection.
Now 63 months' data from 2014-07 to 2019-09, initially at about 5-minute sampling but later cranked up to 1-minute, then Normalize, Low-Pass Filter at 500Hz with 24dB/octave roll-off, Normalize again, Resample:
Playback requires an Internet connection.
I capture live PV grid-tied generation from the 5.16kWp of solar panels on my roof (half east-facing, half west-facing) via my SMA Sunny Beam. Initially I captured about one sample per 5 minutes, but lately every minute.
cat data/SunnyBeam/20????.gz | gzip -d | sh script/mkaudio/PVGentoWAV.sh > img/audio/mkaudio/SunnyBeam-1m-PV-generation-63M.wav
There are four SMA Sunny Boy grid-tie PV inverters in the roof, each handling a separate quarter of the full PV array. A "Sunny Beam" wireless monitor listens to radio transmissions from all four of them. The stats are displayed locally on the device, by inverter and in total. The Sunny Beam is plugged into a USB port on my Raspberry Pi, which allows me to capture an aggregate generation sample each minute.
The full Sunny Beam dataset is published for the 16WW solar grid-tie PV system.