DocumentCode :
2744836
Title :
Analysis of interharmonics in DC arc furnace installations
Author :
Mattavelli, P. ; Felin, L. ; Bordignon, P. ; Perna, M.
Author_Institution :
Dept. of Electr. Eng., Padova Univ., Italy
Volume :
2
fYear :
1998
fDate :
14-18 Oct 1998
Firstpage :
1092
Abstract :
This paper deals with interharmonic disturbances encountered during the operation of a DC arc furnace installation. The main cause of the flicker-like disturbances has been identified in a strong harmonic interaction between AC and DC sides of the thyristor converters. In order to analyze the effects of the various system parameters, the frequency response of the entire system has been derived. This approach allows the analysis of the harmonic amplification taking into account the line impedance, resonances introduced by harmonic filters, current regulator parameters, and the synchronizing procedure. Based on this analysis suitable provisions have been taken to mitigate the 125 Hz voltage distortion on a 50 Hz system. The frequency domain analysis has been verified by a time domain EMTP model of the system. Finally, measurements has been taken on the DC arc furnace installation using different control and filter parameters, which show the effectiveness of the adopted provisions
Keywords :
arc furnaces; frequency response; frequency-domain analysis; harmonic distortion; power harmonic filters; power system harmonics; power system measurement; thyristor convertors; 125 Hz; 50 Hz; DC arc furnace installations; current regulator parameters; flicker-like disturbances; frequency domain analysis; frequency response; harmonic amplification; harmonic filter resonance; harmonic interaction; interharmonics analysis; line impedance; thyristor converters; time domain EMTP model; Analog-digital conversion; Frequency response; Furnaces; Harmonic analysis; Harmonic filters; Impedance; Power harmonic filters; Regulators; Resonance; Thyristors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Harmonics and Quality of Power Proceedings, 1998. Proceedings. 8th International Conference On
Conference_Location :
Athens
Print_ISBN :
0-7803-5105-3
Type :
conf
DOI :
10.1109/ICHQP.1998.760191
Filename :
760191
Link To Document :
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