FIELD: electrical measuring equipment.
SUBSTANCE: invention relates to electrical measuring equipment. Method for control of power circuit, including execution of discrete measurement of electrical parameters in power circuit by means of connected to power circuit of recording device based on a first sampling window and a second sampling window, wherein the second sampling window is shorter than the first sampling window, analyzing discrete measurement results to determine at least one device consuming current from the circuit, and determining at least one harmonic vector device based on the first sampling window and the transient vector based on the second sampling window, determining a signature vector for at least one device based on the harmonic vector and the transient vector.
EFFECT: technical result consists in improvement of efficiency and reliability of analysis of harmonics in power circuit.
17 cl, 14 dwg, 5 tbl
