scholarly journals New Arc Stability Index for Industrial AC Three-Phase Electric Arc Furnaces Based on Acoustic Signals

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6840
Author(s):  
Juan Guerra-Serrano ◽  
Angel Sánchez-Roca ◽  
Guillermo González-Yero ◽  
Mario C. Sánchez-Orozco ◽  
Mercedes Pérez de la Parte ◽  
...  
Keyword(s):  
Harmonic Distortion ◽  
Stability Index ◽  
Melting Process ◽  
Acoustic Signals ◽  
Electric Arc ◽  
Electrical Networks ◽  
Electric Arc Furnaces ◽  
Arc Furnaces ◽  
Starting Point ◽  
Three Phase

This research proposes a new index to evaluate the stability of the melting process, in three-phase electric arc furnaces (EAFs), based on the acoustic signals generated during the different stages of the casting. The proposed stability index is obtained by characterizing the time and frequency domain of the acoustic signals. During EAF monitoring, acoustic signals were acquired using a microphone coupled to an NI USB-9234 acquisition system. To validate the results, the voltage and current signals were measured with the aid of a Circutor AR6 power analyzer for three-phase electrical networks. The results showed that the acoustic signal energy in the frequency range of 1 to 12 kHz can be used as an indicator of the process stability in the EAF. Finally, the validity of the proposed stability index is evaluated from the process characterization using the harmonic distortion analysis methods and the dynamic U-I characteristics of the arc voltage and current signals. The results obtained demonstrated the effectiveness of the proposal and constitute a starting point for advances in the automatic control of the process in the EAF, from the acoustic signals.

scholarly journals Virtual Neutral to Ground Voltage as Stability Index for Electric Arc Furnaces

2011 ◽  
Vol 51 (11) ◽  
pp. 1846-1851 ◽  
Author(s):  
Fernando Martell ◽  
Alejandro Deschamps ◽  
Rafael Mendoza ◽  
Miguel Meléndez ◽  
Armando Llamas ◽  
...  
Keyword(s):  
Stability Index ◽  
Electric Arc ◽  
Electric Arc Furnaces ◽  
Arc Furnaces

Modelling and Simulation of the Melting Process in Electric Arc Furnaces-Influence of Numerical Solution Methods

2015 ◽  
Vol 87 (5) ◽  
pp. 581-588 ◽  
Author(s):  
Thomas Meier ◽  
Vito Logar ◽  
Thomas Echterhof ◽  
Igor Škrjanc ◽  
Herbert Pfeifer
Keyword(s):  
Numerical Solution ◽  
Melting Process ◽  
Electric Arc ◽  
Modelling And Simulation ◽  
Electric Arc Furnaces ◽  
Arc Furnaces ◽  
Numerical Solution Methods ◽  
Solution Methods

scholarly journals Electric Arc Furnaces as a Cause of Current and Voltage Asymmetry

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5058
Author(s):  
Zbigniew Olczykowski
Keyword(s):  
Short Circuit ◽  
Electric Arc ◽  
Arc Furnace ◽  
High Current ◽  
Operating Characteristics ◽  
Electric Arc Furnaces ◽  
Arc Furnaces ◽  
Three Phase ◽  
Quality Analyzer ◽  
Theoretical Considerations

In the case of three-phase arc furnaces, two types of asymmetry can be distinguished: constructional and operational. The structural asymmetry is related to the construction of high-current circuits supplying the arc furnace. The knowledge of the parameters of the high-current circuit allows to determine the operating characteristics of the arc device. The author proposed a method for calculating the real values of the resistance and reactance of the high-current circuit. For this purpose, tests were made to short-circuit the electrodes with the charge. During the short-circuit, with the use of a power quality analyzer, measurements of electrical indicators were carried out, which allow to determine the parameters of the high-current circuit. A new method for determining voltage operational unbalance is also presented in this paper. The theoretical considerations presented in the article were verified in industrial conditions.

Predicting the Power Consumption during Furnace Charge Melting in Steelmaking Electric Arc Furnaces

Vestnik MEI ◽  
2019 ◽  
Vol 6 ◽  
pp. 83-90
Author(s):  
Anatoliy M. Kruchinin ◽  
◽  
Mikhail Ya. Pogrebisskiy ◽  
Elena S. Ryazanova ◽  
Andrey Yu. Chursin ◽  
...  
Keyword(s):  
Power Consumption ◽  
Electric Arc ◽  
Furnace Charge ◽  
Electric Arc Furnaces ◽  
Arc Furnaces
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