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| Time-varying Parameter Model of AC Electrical Arc Furnace for Power Quality Predictions and Analysis |
| Liao Yantao1, Hu Jun1, Zhang Hailong2, Wang Enrong1 |
1. College of Electrical and Automation Engineering, Nanjing Normal University, Nanjing 210042;
2. College of Physics and Technology, Nanjing Normal University, Nanjing 210023 |
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Abstract A novel time domain differential model is proposed for the AC EAF (Electrical Arc Furnace) based on the law of conservation of energy. The model is established with arc admittance as a state variable, and with arc current and arc length as the input. The relation between the parameters with arc length is derived from the formula of the arc length and voltage. The engineering estimation method of time-varying parameters are further realized. Moreover, the limited bandwidth random signal is added on the arc length, and actual working state was simulated. A real EAF is taken to simulate the dynamic characteristics as well as the grid voltage fluctuation and harmonic wave in melting and refining stages. The results coincide with the measured data so prove the validity and practicability of the model.
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Published: 22 March 2016
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| Cite this article: |
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Liao Yantao,Hu Jun,Zhang Hailong等. Time-varying Parameter Model of AC Electrical Arc Furnace for Power Quality Predictions and Analysis[J]. Electrical Engineering, 2016, 17(3): 41-46.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2016/V17/I3/41
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2016, Vol. 17 
