The effects of series inductors for flicker reduction in electric power systems supplying arc furnaces

Montanari, G.C.; Loggini, M.; Pitti, L.; Tironi, E.; Zaninelli, D.

doi:10.1109/ias.1993.299209

Cited by 35 publications

(11 citation statements)

References 6 publications

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“…Contradictorily, high-order passive filter is complex, non-economical and seldom used. (2) Series active compensator, such as the series impedance regulation [5]. Although, to some extent, the increasing series reactance can mitigate the flicker, it results in the voltage reduction and therefore decreases EAF productivity.…”

Section: Eaf System and Field Data Analysismentioning

confidence: 99%

Field Data-based Study on Electric Arc Furnace Flicker Mitigation

Han

Huang

Bhattacharya

et al. 2006

Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting

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As an industry customer of utility, electrical arc furnace (EAF), acting as a varying and reactive power sink, is the major flicker source to influence the grid power quality. In this paper, based on the field data recorded at the electric system surrounding EAF, the flicker issues and reactive power compensation requirement are quantitatively analyzed. The possible compensation solutions, including passive filter, SVC (static var compensator), STATCOM (static synchronous compensator) are discussed. Furthermore, a field data-based EAF model is proposed and implemented in the simulation software. The fast-bandwidth STATCOM solution with or without capacitor bank are designed and implemented. With the validated EAF and STATCOM model, the extensive simulations are conducted to study compensator performance and costeffectiveness for EAF flicker mitigation. Finally, the guideline for compensator selection and performance estimation is obtained.

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Section: Eaf System and Field Data Analysismentioning

confidence: 99%

Field Data-based Study on Electric Arc Furnace Flicker Mitigation

Han

Huang

Bhattacharya

et al. 2006

Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting

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“…Control operated by the hydraulic actuator located at the bottom of mast superposes to the electromechanical forces applied among the electrodes and to some irregularity in the power fed to the electrode, being a consequence of the flicker phenomenon [12]- [14].…”

Section: Introductionmentioning

confidence: 99%

Design and Structural Optimization of the Electric Arc Furnace Through a Mechatronic-Integrated Modeling Activity

Brusa

Morsut

2015

IEEE/ASME Trans. Mechatron.

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Vibration of electrodes in operation strongly affects the efficiency of the electric arc furnace (EAF) fed by ac current during the steel smelting process. Therefore, an effective control of the structural dynamics through an active system is a current goal of the "intelligent manufacturing" approach. A vertical position control applied to each electrode allows keeping the arc length almost constant and reduces the effects of some electromechanical actions due to the mutual magnetic induction among the three electric phases. Nevertheless, control action needs for a detailed model of the whole system dynamic behavior. A new method for modeling the equipment behavior and somehow the process was implemented. A key issue was including into the model all the electromechanical coupling effects occurring in this system and suitably linking to the structural dynamics. Modeling activity was performed by resorting to the multibody dynamics and the finiteelement method, while some analytical formulations were used to describe both the electric arc behavior and the control. A preliminary validation on a real plant was performed as far as the huge size of the system allowed and an assessment of the mechanical design of the EAF was completed.

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“…W. Marshall et al [15][16] have analysed about the sing Series Capacitors to Mitigate VoltageFlicker Problems in his paper "voltage flicker compensation using statcom" [15][16].In this type, all the efforts aredone to decrease the voltage drop mentioned above, andfinally the reactive power is kept constant despite the loadfluctuations by controlling the line reactance.…”

Section: Introductionmentioning

confidence: 99%

Compensation of Voltage Flicker by Using Facts Devices

Bharothu¹

2013

EPES

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Abstract:Voltage flicker occurs when heavy loads are periodically turned on and off in a weak distribution system. If the distribution system's short circuit capacity is not large enough, voltage fluctuations will occur. Voltage flickering can be extremely harmful to sensitive electronic equipment. Computerized equipment requires stable voltage to perform properly. This paper covers the contrasting approaches; dealing with the voltage flicker mitigation in three stages and assessing the related results in details. Initially, the voltage flicker mitigation, using FCTCR (Fixed Capacitor Thyristor Controlled Reactor), was simulated. Secondly, the compensation for the Static Synchronous Compensator (STATCOM) has been performed. In this case, injection of harmonics into the system caused some problems which were later overcome by using 12-pulse assignment of SATCOM and RLC filters. The obtained results show that STATCOM is very efficient and effective for the flicker compensation. All the simulations have been performed on the MATLAB Software.

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The effects of series inductors for flicker reduction in electric power systems supplying arc furnaces

Cited by 35 publications

References 6 publications

Field Data-based Study on Electric Arc Furnace Flicker Mitigation

Field Data-based Study on Electric Arc Furnace Flicker Mitigation

Design and Structural Optimization of the Electric Arc Furnace Through a Mechatronic-Integrated Modeling Activity

Compensation of Voltage Flicker by Using Facts Devices

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