A new field-data based eaf model applied to power quality studies

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2009

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Göl, Murat

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Electric Arc Furnace (EAF) modeling has been a common research area to date. This thesis work proposes a new field-data based EAF-specific model. The data used in developing the proposed model is obtained from field measurements of instantaneous voltages and currents of EAF the plants. This model presents the dynamic behavior of the EAF system including all its parts, which are the EAF transformer, the secondary circuit, the electrodes moving and the arc itself. It consists of a cascade connected variable-resistance and –inductance combination to represent the variation in time of the fundamental frequency, and a current source in parallel with it to inject the harmonics and interharmonics content of the EAF current. The proposed model is capable of representing both AC and DC EAFs, whose controllers’ set points are the impedance values seen from the low voltage (LV) side of the EAF transformer. The validity of the proposed model has been verified by comparing EMTDC/PSCAD simulations of the model with the field measurements. The results obtained have shown quite satisfactory correlation between the behavior of the proposed model and v the actual EAF operation. To show the advantages of the model while developing FACTS solutions for power quality (PQ) problem mitigation of a given busbar supplying single- or multi-EAF installations, various applications are presented.

Subject Keywords

Electrical engineering., Applications of Electric Power.

URI

http://etd.lib.metu.edu.tr/upload/12611083/index.pdf
https://hdl.handle.net/11511/18826

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

M. Göl, “A new field-data based eaf model applied to power quality studies,” M.S. - Master of Science, Middle East Technical University, 2009.