Modeling voltage-current characteristics of an electric arc furnace based on actual recorded data: A comparison of classic and advanced models

Field measurements of voltage and current is the most effective way for characterizing the electric response of an EAF that describe the nonlinear behavior of AC EAF loads. Sufficient measured information can be adopted to develop an appropriate EAF model. In this paper, two classic methods based on measured data, harmonic current injections and equivalent harmonic voltage sources, for the EAF load modeling are reviewed. For comparison, two advanced methods based on actual recorded data, cubic spline interpolation and radial basis function neural network (RBFNN), are also proposed to model the EAF load. A steel plant power system with EAF loads is used for field measurements and computer simulations. Comparisons between the results of measured data and simulations for the four EAF models are being made according to the voltage/current waveforms and voltage-current characteristics. It is shown that the advanced models yield better performance than classic models of the EAF.

[1]  S. Kolluri,et al.  Voltage flicker prediction for two simultaneously operated AC arc furnaces , 1996 .

[2]  Gian Carlo Montanari,et al.  Arc-furnace model for the study of flicker compensation in electrical networks , 1994 .

[3]  R. Asensi,et al.  A new frequency domain arc furnace model for iterative harmonic analysis , 1997 .

[4]  Tongxin Zheng,et al.  Effect of different arc furnace models on voltage distortion , 1998, 8th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.98EX227).

[5]  M.P. Donsion,et al.  An improved time domain arc furnace model for harmonic analysis , 2004, IEEE Transactions on Power Delivery.

[6]  Hossein Mokhtari,et al.  A new three phase time-domain model for electric arc furnaces using MATLAB , 2002, IEEE/PES Transmission and Distribution Conference and Exhibition.

[7]  D. A. Gonzalez,et al.  Measurements and simulations-combined for state-of-the-art harmonic analysis , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[8]  Ali Abur,et al.  Flicker study using a novel arc furnace model , 2002 .

[9]  Nikola Rajaković,et al.  A harmonic domain computational package for nonlinear problems and its application to electric arcs , 1990 .

[10]  Adly A. Girgis,et al.  A new time domain voltage source model for an arc furnace using EMTP , 1996 .

[11]  Elham B. Makram,et al.  An adaptive arc furnace model , 2000 .

[12]  King Jet Tseng,et al.  An experimentally verified hybrid Cassie-Mayr electric arc model for power electronics simulations , 1997 .

[13]  Jun Zhang,et al.  Wavelet neural networks for function learning , 1995, IEEE Trans. Signal Process..