A novel electromagnetic transient modeling method of impact load of arc furnace

Author

Liang Dong ; Zhiguo Hao ; Mingyu Huang ; Feng Gao ; Shuang Zhang

Author_Institution

Sch. of Electr. Eng., Xi´an Jiaotong Univ., Xi´an, China

fYear

2015

fDate

10-13 June 2015

Firstpage

1593

Lastpage

1598

Abstract

Access of electric arc furnace impact load has great influence on power system and electrical equipment. However, some models proposed cannot do transient simulation well because ignoring physical characteristics of arc, or some usually are complex to realize. All these problems are not conducive to study of EAF´s actual operation. Based on physical characteristics of arc and the law of energy conservation, a time-varying AC-arc resistance model which reflects physical nature of EAF is built by a novel non-linear differential equation in this paper. This model takes arc length and instantaneous current as inputs, and arc resistance as state variable. Then the novel model is built by some simple function modules in PSCAD/EMTDC. Finally, EAF simulation model is connected to power system as a load. Simulations have been done to research impact and harmonics influence of EAF on power system, and the superiority and validity of this modeling method is verified.

Keywords

EMTP; arc furnaces; nonlinear differential equations; power system transients; EAF; PSCAD/EMTDC; electric arc furnace; electrical equipment; electromagnetic transient modeling method; impact load; nonlinear differential equation; power system; state variable; time-varying AC-arc resistance model; transient simulation; Electrodes; Furnaces; Harmonic analysis; Integrated circuit modeling; Load modeling; Mathematical model; Resistance; EAF; electrical arc furnace; energy conservation; function module; impact load; time-varying resistance;

fLanguage

English

Publisher

ieee

Conference_Titel

Environment and Electrical Engineering (EEEIC), 2015 IEEE 15th International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4799-7992-9

Type

conf

DOI

10.1109/EEEIC.2015.7165409

Filename

7165409