Title :
Generation of voltage fluctuations in power systems with DC arc furnaces
Author :
Stade, D. ; Schau, H. ; Malsch, M. ; Hunermund, J. ; Prinz, S.
Author_Institution :
Dept. of Electr. Power Syst. & Appliances, Tech. Univ. of Ilmenau, Germany
Abstract :
There is an increasing use of high-power DC arc furnaces for scrap melting all over the world. Onsite measurements in several steel plants with these furnaces have shown that flicker relevant voltage fluctuations cannot be prevented. The first reason is the time-varying need of reactive power. Also dynamic compensators like TCRs are often not able to avoid considerable flicker, particularly in cases of small network short-circuit capacities. Another flicker origin is the existence of interharmonics. Together with the converter-characteristic harmonics, these interharmonics may result in difference frequencies in the flicker-relevant range. In the paper, the general interactions are explained and a calculation program is presented for the simulation of the power quality conditions in the electric power supply system
Keywords :
arc furnaces; harmonic distortion; metallurgical industries; power conversion harmonics; power supply quality; power system measurement; power system transients; DC arc furnaces; TCRs; converter-characteristic harmonics; dynamic compensators; electric power supply system; flicker origin; interharmonics; onsite measurements; power quality conditions; power system voltage fluctuations generation; reactive power; scrap melting; DC generators; Frequency conversion; Furnaces; Power generation; Power system harmonics; Power system measurements; Power systems; Reactive power; Steel; Voltage fluctuations;
Conference_Titel :
Harmonics and Quality of Power Proceedings, 1998. Proceedings. 8th International Conference On
Conference_Location :
Athens
Print_ISBN :
0-7803-5105-3
DOI :
10.1109/ICHQP.1998.760192