MEASUREMENT AND STUDY OF HARMONIC ON AC-EAF

EAF is a non-linear load of the net due to the non-linear characteristics of arc resistance no matter what the capacity of EAF is.Especially in the initial stage of melting,the net voltage is quickly fluctuated strongly because of high harmonic.Based on measured harmonic parameters on 70/100 t high impedance EAF at Nanjing iron and steel group co.,the harmonic EAF steelmaking process was studied,and the relationship between harmonic and operation reactance is discussed.