METHOD OF REDUCING FLICKER IN ELECTRIC ARC FURNACES AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC C21C5/52 F27B3/28 H02J3/18 H05B7/144 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy and can be used for production of steel in electric arc furnaces with control of flicker parameters. In the method memory bank data on flicker is created by storage device, storing momentary flicker (MF) time dynamics depending on state and performance characteristics, MF time dynamics measurement during initial phase of melting and related characteristics of state and operating characteristics is performed using recording device, MF time dynamics comparison during initial phase of melting is performed using computing device with stored melting phases time dynamics of common flicker data bank taking into account state characteristics and operating characteristics, selection of time general dynamics with maximum MF matching is performed using computing device, as well as state characteristics and operating characteristics as predicted total flicker dynamics, advanced dynamic matching of further steel production process control in comparison of predicted general dynamics with preset limits for flicker is performed using control unit.

EFFECT: invention allows to control flicker indices to be expected and with high degree of probability can be determined, on the basis of state characteristics and operating characteristics, which are recorded during first minutes in melting phase; as such flicker can be effectively alleviated and maintained below preset limit values.

26 cl, 4 dwg