Online Characterization of Interharmonics and Harmonics of AC Electric Arc Furnaces by Multiple Synchronous Reference Frame Analysis

Date

2016-05-01

Author

Uz-Logoglu, Eda
Salor, Ozgul
Ermiş, Muammer

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In this paper, a multiple synchronous reference frame (MSRF) analysis framework is developed to determine the positive-and negative-sequence components of all interharmonic and harmonic currents produced by alternating current electric arc furnace (AC EAF) installations, which can be considered as balanced but asymmetrical three-phase, three-wire loads on the power system. The aim of developing the MSRF analysis framework is twofold; deep understanding of the EAF characteristics, and fast and accurate generation of reference signals to the controllers of the advanced technology compensation systems such as active power filters (APFs), synchronous static compensators (STATCOMs), and energy storage systems (ESS), which may successfully compensate interharmonics, harmonics, and flicker. Online characterization of interharmonics and harmonics by MSRF analysis utilizes continuously measured line currents and line voltages on the medium-voltage side of the EAF transformer at a sampling rate of 25.6-kHz per data channel. It has been shown by offline computations that compensation of the sequence components of interharmonics and harmonics of the EAF currents obtained by the proposed framework, reduces the short-term flicker values at the point of common coupling by up to 10-fold. The proposed MSRF analysis framework has been successfully verified by comparing the frequency spectrums of the EAF currents with Fourier analysis results based on one-cycle sliding windows of 10-cycle duration.

Subject Keywords

Electric arc furnace (EAF), Harmonics, Interharmonics, Multiple synchronous reference frame (MSRF), Power quality (PQ)

URI

https://hdl.handle.net/11511/31301

Journal

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS

DOI

https://doi.org/10.1109/tia.2016.2524455

Collections

Graduate School of Natural and Applied Sciences, Article

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Online characterization of interharmonics and harmonics of AC electric arc furnaces by multiple synchronous reference frame analysis Uz Loğoğlu, Eda; Salor, Özgül; Ermiş, Muammer (2015-10-18) In this paper, a multiple synchronous reference frame (MSRF) analysis framework is developed to determine the positive- and negative -sequence components of all interharmonic and harmonic currents produced by alternating current electric arc furnace (AC EAF) installations, which can be considered as balanced but asymmetrical three-phase, three -wire loads on the power system. The aim of developing the MSRF analysis framework is two -fold; deep understanding of the EAF characteristics, and fast and accurate ...
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Citation Formats

E. Uz-Logoglu, O. Salor, and M. Ermiş, “Online Characterization of Interharmonics and Harmonics of AC Electric Arc Furnaces by Multiple Synchronous Reference Frame Analysis,” IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, pp. 2673–2683, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31301.