Measuring method for deciding direction to a flickering source

• Method and arrangement for deciding the direction to a flickering source in relation to a measurement point in an electrical network with alternating current with a network frequency with low-frequency amplitude variations from the flickering source. The method includes the steps: recording an amplitude-modulated current signal having signals that originate from the network frequency and the low-frequency amplitude variations in the current signal; recording an amplitude-modulated voltage signal having signals that originate from the network frequency and the low-frequency amplitude variations in the voltage signal; creating a flicker power with a sign value by multiplication of the low-frequency amplitude variations in the current signal and the low-frequency amplitude variations in the voltage signal, and analyzing the sign value, with the sign value indicating in which direction the flickering source is to be found in relation to the measurement point.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Nyckelord

Voltage flicker

voltage flicker assessment

flicker power flow

power quality

IEC 61000-4-15

Publikations- och innehållstyp

pop (ämneskategori)

pat (ämneskategori)