Comparison of thyristor-controlled reactors and voltage-source inverters for compensation of flicker caused by arc furnaces

García-Cerrada, Aurelio; García-González, Pablo; Collantes, R.; Gómez, Tomás; Anzola, Jon

doi:10.1109/61.891507

Cited by 118 publications

(34 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The harmonic components were found negligible during pellet operation. Aurelio García-Cerrada et al [5] has compared the performance of TCR based and VSI based flicker compensation experimentally from the arc furnace installation. An electrical arc furnace is a stochastic non linear load [6].The author has proposed a model for an arc furnace by assuming that whenever there is current, the voltage drop is constant for fixed for fixed arc length.…”

Section: Vmentioning

confidence: 99%

Power Quality Issues of Electric Arc Furnace and their Mitigations -A Review

Singh¹,

Singh²,

Singh³

2017

IJAERS

View full text Add to dashboard Cite

show abstract

Section: Vmentioning

confidence: 99%

Power Quality Issues of Electric Arc Furnace and their Mitigations -A Review

Singh¹,

Singh²,

Singh³

2017

IJAERS

View full text Add to dashboard Cite

show abstract

“…The structure and performance of the TCR and STATCOM in reducing the voltage flicker of the EAF were also compared in [9]. A summarized discussion of measuring reactive power in a 3-phase power system was also briefly presented in [10,11]. The disadvantage of the mentioned system is that the stochastic error in the system is reinforced instantaneously, causing reduction of the speed and accuracy.…”

Section: Introductionmentioning

confidence: 99%

Electric arc furnace power quality improvement by applying a new digital and predicted-based TSC control

Esfahani¹,

Vahidi

2016

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

Static VAR compensators (SVC) can improve some of the power quality (PQ) indices such as voltage flicker, unbalances, and power factors in power systems if properly controlled. Different nonlinear and time-varying loads generate these parameters. One of the great nonlinear loads is the electric arc furnace (EAF), which causes waveform distortions, voltage unbalances, and fluctuations. In this paper, a new digital and prediction-based control for thyristor switched capacitors (TSCs) was proposed to compensate an actual steel industrial plant. The digital control was based on generating adequate synchronous pulses, calculating required suitable susceptance, and measuring correct reactive power. The proposed TSC improved the PQ by means of the feedback from voltage and power factor. A predictive method based on time series and recursive least square with dynamic learning factor was then applied to estimate EAF reactive power in the future so that the TSC performance was enhanced by reducing the natural time delay. A band-pass harmonic filter was designed to compensate the load current harmonics and to protect the capacitor banks in the TSC.Finally, the suggested TSC was implemented in a steel industrial plant as an actual power system with 2 EAFs. The modeling and experimental results indicate the effectiveness of the proposed TSC.

show abstract

“…Also thanks to their controlled commutation, STATCOMs provide a much faster dynamic performance [3]. STATCOMs rapidly evolved from square wave multi-pulse converters [4-6] to pulse width modulation (PWM)-controlled converters [7][8][9] making it possible a fast and accurate active and reactive power control at the PCC.Nowadays STATCOMs are used for reactive power compensation mainly, in applications such as improving fault-ride-through of wind generators [10] or compensating voltage drops at the transmission level or voltage fluctuations at the distribution level [11,12]. When STATCOMs are used in distributions systems they are often called Distribution Static Compensators (DSTATCOMs) [13].…”

mentioning

confidence: 99%

Versatile Control of STATCOMs Using Multiple Reference Frames

Ochoa-Gimenez

García-Cerrada

Roldán-Pérez

et al. 2014

Static Compensators (STATCOMs) in Power Systems

View full text Add to dashboard Cite

This chapter first reviews the fundamentals of active and reactive power control using STATCOMs. Then, two current control algorithms, namely selective/ resonant controllers and repetitive controllers, are presented that provide a STATCOM with the capability of controlling the harmonics of the current injected into the PCC. Finally, the use of synchronously-rotating reference frames is generalized so that current harmonic control can also be achieved using PI controllers. An efficient application of the last technique is explained in detailed and a number of experimental results are presented. It will be demonstrated that versatile control of STATCOMs is straightforward using this technique even if the grid frequency varies. This technique can be applicable to both, traditional, strong and centralised electric power systems and those to come in the future with large amounts of distributed generation.Keywords STATCOM Á VSC Á Harmonic control Á Selective control Á Repetitive control Á Multiple reference frames M. Ochoa-Giménez Á A. García-Cerrada (&) Á J. Roldán-Pérez Á J.L. Zamora-Macho Á P. García IntroductionSTATCOMs are typical shunt power electronics-based devices (see Fig. 7.1), used in power systems for multiple purposes [1]. Originally, STATCOMs were intended for reactive power control as a superior alternative to thyristor-controlled devices such as Thyristor-Controlled Reactors (TCRs) or Thyristor-Switched Capacitors (TSCs) [2]. Reactive power compensation in TCRs and TSC depends on the point of common coupling (PCC) voltage unlike in STATCOMs which could overcome this limitation thanks to the use of electronic switches capable of controlled ON-OFF and OFF-ON commutation. Also thanks to their controlled commutation, STATCOMs provide a much faster dynamic performance [3]. STATCOMs rapidly evolved from square wave multi-pulse converters [4-6] to pulse width modulation (PWM)-controlled converters [7][8][9] making it possible a fast and accurate active and reactive power control at the PCC.Nowadays STATCOMs are used for reactive power compensation mainly, in applications such as improving fault-ride-through of wind generators [10] or compensating voltage drops at the transmission level or voltage fluctuations at the distribution level [11,12]. When STATCOMs are used in distributions systems they are often called Distribution Static Compensators (DSTATCOMs) [13].The most classical approach to the control of a STATCOM [9] (reactive power control) only addresses the control of the fundamental components of the current injected in the PCC: the positive-sequence current of the grid frequency. Meanwhile, the same shunt-connected components in Fig. 7.1 (left) namely, a voltage source converter (VSC), a transformer (optional) and a connection filter, are.1 STATCOM schematics (left) and simplified model (right), nomenclature: p and q are the instantaneous real and reactive power injected by the STATCOM into the PCC, p R is the power lost in the filter resistance, p L is the power consumed in the filter plus ...

show abstract

Comparison of thyristor-controlled reactors and voltage-source inverters for compensation of flicker caused by arc furnaces

Cited by 118 publications

References 8 publications

Power Quality Issues of Electric Arc Furnace and their Mitigations -A Review

Power Quality Issues of Electric Arc Furnace and their Mitigations -A Review

Electric arc furnace power quality improvement by applying a new digital and predicted-based TSC control

Versatile Control of STATCOMs Using Multiple Reference Frames

Contact Info

Product

Resources

About