Journals →  Chernye Metally →  2017 →  #5 →  Back

Power Engineering and Ecology
ArticleName The new method of operation of the solid-state switcher of transforming stage in electric steelmaking shop with improvement of its working parameters
ArticleAuthor H. Schnack, K. Kruger, J. Wu, V. Haverkamp
ArticleAuthorData

Helmut Schmidt University (Hamburg, Germany):

Schnack H., Mag., Former Scientific Researcher, e-mail: hendrikschnack@posteo.de

Haverkamp V., Dr. Eng., Chair of Systems for Processing of Technological Information and Systematic Analysis

 

Max Aicher GmbH & Co. KG (Freilassing, Germany)
Krüger K., Dr. Eng., Prof., Deputy Director


Maschinenfabrik Reinhausen GmbH (Regensburg, Germany)
Wu J., Dr. Eng., Head of the Project, Corporate Technologies Dept.

Abstract

The requirements to technical execution of switching-on of electric arc furnaces to electric power supply become more and more strict. Thereby several metallurgical works plan to re-design compensating devices in the point of their switching-on during the nearest years. The paper presents the cheap alternative to usual compensator of reactive capacity including asymmetrically switched solid-state switcher of transforming stages and compensator with thyristor control. It is characterized by practically zero losses and can be considered as a suitable solution meaning cutting of higher harmonics, reactive capacity and flicker effect. These conclusions can also be related to purchasing of the new furnace transformer and, additionally, can give any advantage in productivity (e.g. increase of capacity owing to rise of arc voltage and/or arc current). It is expedient to examine switching-on scheme for electric steelmaking shops in more details.

keywords Electric arc furnaces, solid-state switcher, arcs, voltage, electric power supply, current, flicker-effect, compensator
References

1. VDE-AR-N 4120:2015-01. Januar2015. Technische Bedingungen fur den Anschluss und Betrieb von Kundenanlagen an das Hochspannungsnetz (TAB Hochspannung).
2. Forum Netztechnik / Netzbetrieb im VDE: Technische Regeln zur Beurteilung von Netzrücbvirkungen (Ergänzungsdokument zur Beurteilung von Anlagen fur den Anschluss an Hochspannungsverteilernetze), http://www.vde.com/de/fnn/arbeits-gebiete/versorgungsqualitaefdocuments/dachcz_hs_20 l2.pdf
3. Agricola, A.; Seidl, H.; Mischinger, S.: dena-Studie Systemdienstleistungen 2030, Deutsche Energie-Agentur (dena), http://www.dena.de/fileadm/user_upload/Pro-jekte’Energiesysteme’Dokumente’dena-Studie_Systemdienstleistungen_2030.pdf, Zuletzt geprüft am: 11. August 2015.
4. Weniette, Т.; Andersson, G.; Johansson, В.; John, E.; Nilsson, В.: SVC refurbishment: a cost efficient method to extend the life of an SVC, Bd. 1 [In:. . .IEEE (Hrsg.): Power Engineering Society General Meeting, 13.–17. Juli 2003, Toronto, Kanada, S. 348/52.
5. Schnack, H.; Krüger, К.; Babizki, A.; Wu, J.: Schnelle Stromregelung von Dreh stromlichtbogenöfen auf Basis von Halbleiterstufenschaltern, stahl u. eisen 134 (2014) Nr. 4, S. 677/71.
6. Arlt,D.: Powersupply of AC arc furnaces, 11th Int. Seminar/VdEh-Seminar „Electrical Engineering of Arc Furnaces“, Wetzlar, 24.–26. Sept. 2013.
7. Jäger, S.: Beispiele von Anlagen zur Bundstromkompensation, Symmetrierung und Spannungsunterstützung industrieller Elektrowärmeanlagen, Elektrowärme Int. 32 (1974) Nr. 6, S. 326/35.
8. Dixon, J.; Moran, L.; Rodriguez, J.; Domke, R.: Reactive power compensation technologies: State-of-the-art review, Proc. IEEE 93 (2005), Nr. 12, S. 2144/64, http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=1545768
9. Mathur, R. M.; Varma, R. K.: Thyristor-based facts controllers for electrical trans mission systems, Piscataway, USA, IEEE Press, 2002 (IEEE Press series on power engineering).
10. Grunbaum, R.; Dosi, D.; Rizzani, L: SVC for maintaining of power quality in the feeding grid in conjunction with an Electric Arc Furnace in a steel plant, Proc. CLRED 2005 — 18th Int. Conf. and Exh. on Electricity Distribution, 6.-9. Juni 2005, Turin, Italien, S. 1/5.
11. Grunbaum, R.; Ekstrom, P.; Hellstrom, A. A.: Powerful reactive power compensation of a very large electric arc furnace, Proc. 4th Int. Conf. on Power Engineering, Energy and Electrical Drives, 13.–17. Mai 2013, Istanbul, Türkei, S. 277/82.
12. Dionise, Т.: Assessing the performance of a Static VAR Compensator for an electric arc furnace, Industry Appl. Soc. (IAS) Ann. Meeting, 7.–11. Okt. 2012, Las Vegas, USA, S. 1/10.
13. Frank, H.; Ivner, S.: Thyristorgeschaltete Kondensatoren zur Blindleistungskompen sation von Lichtbogenöfen, Elektrowärme Int. 32 (1974) Nr. 6, S. 313/23.

Language of full-text russian
Full content Buy
Back