Hello Folks,
I´m doing a data acquisition project on qualifiing the mains parameter.
Its running since one year now. Exclusivly with frequency measurements.
You can find published data, multiple analysis and some variations of displaing data here ...
http://vanhinten.de/Now I´d like to move forward and check more stuff. I did a quick shot
with an oscilloscope and a high voltage differential probe (HVDP) and logged for a few days
some voltage data. Its worth to log them continuosly as well.
An HVDP with ADC and Raspi backend is already designed to get rid of the oscilloscope and expensive probe.
For analysing voltage I´ll take a look at
- Vpp, RMS, Mean, StdDev, Crest, Rise/Falltime
- Harmonics (20)
Especially harmonics is a well indicator of when the mains get dirty by unregulated load.
Furthermore is planned to do a kind of software triggering to get each period which I´d like to pass through a mask test to get
kind of runts or interrupts in periods. Those events shall be logged with their timestamp and characteristics
as I did for frequency data.
What do you think would be worth to be logged as well?
Main focus yet is logging data. Analysing them is another part.
- maybe three loggers at the same time on the three-phase current system?
- with measuring phase to each other
Thanks for hints and ideas

BR JoHr