olemus
väreluse pingehälvete ja
keskmise võrgupinge efektiivväärtuse suhe
=
a power quality indicator, the mains voltage fluctuations relative intensity

ülevaateid
http://www.powerqualityworld.com/2011/09/voltage-fluctuations-flicker.html

https://www.caledoncontrols.co.uk/datash/voltage%20flicker.pdf

https://powerquality.blog/2021/02/01/voltage-disturbances-flicker-measurement/

https://www.gigahertz-optik.de/en-us/service-and-support/knowledge-base/flicker-measurement-with-the-bts256-ef/